Trion Air Boss Model 75 Info for Maintenance Engineer

Model 75 Series Units with Integral Washing System

1. Introduction and Principle of Operation
2. General Description
3. Initial Start-up
4. Wash Control and Detergent System Settings
5. Routine Maintenance
6. Periodic Maintenance
7. Troubleshooting
8. Spare Parts

**Model 75 Units With No Washing System**

1. Introduction and Principle of Operation

The Trion electronic air cleaner is technically known as an electrostatic precipitator. In this type of equipment, all airborne particles, even of microscopic size, are electrically charged (positively) as they pass through a high voltage ionizer. These charged particles are then attracted and adhere to a series of parallel collecting plates, which form the negative elements of an electrostatic field.

The ionizer consists of charged stainless steel spiked blades spaced between grounded electrodes. The collecting section consists of parallel plates arranged so that each alternate plate is charged while the intermediate plates are electrically grounded.

Periodically, depending on the type and concentration of contamination in the air, the contaminant is washed from the plates by the integrally constructed water wash system.

Three major functional components comprise the air cleaner:

1. Ionizing-collecting cells to ionize and collect airborne particulate matter.

2. Power supply(s) to supply high voltage direct current to the ionizing-collecting cells.

3. Control operated washer to automatically wash away the collected contaminant.

Normally, systems are designed for collection efficiencies in the range of 90% or more. Collecting a contaminant at these efficiencies, especially when there are high concentrations can result in large accumulations in a relatively short period. Therefore, maintenance must encompass two areas; the operation of the equipment for efficient collection and the systematic removal of the collected contaminant.

2. General Description

The ionizing-collecting cells (contaminant collecting elements) are housed in the cabinet on slide rails. They can be removed from the cabinet as required, through the end access door, by sliding them out like drawers. On multi-cell units, all of the electrical connections between cells in a given tier are automatically made through spring plunger connectors. On the access end, the high voltage cables from the power supplies are connected to the junction box on top of the cabinet. The high voltage cables from the junction box to the individual tiers are factory wired. When installing cells into the cabinet, observe the directional arrows on the cell end plates. The side of the cell containing the spiked ionizer blades must always be located on the air entering side. The spring plunger connectors, located on one end of each cell, will always face toward the back of the Model 75 Cabinet.

Both the air entering and air leaving side of the cabinet contain either metal mesh filters or perforated plate, whichever was specified. These items act as trash screens, provide resistance for even air distribution, and help contain splash back from the integral water wash system.

The Power Supply(s) convert the 115 volt, 60HZ, single phase AC supply to the high voltage DC needed to power the ionizing-collecting cells. Potential of 13 KVDC are required for the ionizer sections and 6.5 KVDC for the collector sections of the cells.

The integral wash system consists of a series of spray nozzles soldered into oscillating water wash manifolds. The manifolds are located in the front and rear of each cell tier. They are oscillated through straight drive linkage powered by fractional HP motors. A detergent system is also incorporated into the wash system. The amount of detergent used for washing is readily adjustable, and that amount is dependent upon the type and amount of collected contaminant.

The washing operation is cycled periodically, and again the frequency is dependent on the type and amount of contaminant collected. The events in a wash cycle are:

1. Power Supply(s) and System Fan “OFF”

2. Washer and Detergent “ON”

3. Washer and Detergent “OFF”

4. Pause for Detergent to react

5. Washer “ON” (without detergent for rinse)

6. Washer “OFF”

7. Pause for Drip Dry

8. Blower “ON” for forced dry

9. Power Supply(s) “ON”

The time span for all of the events is factory set when the equipment is initially ordered.

3. Initial Start-up

A. Inspect the inside of the adjoining ductwork and Trion cabinet to be sure it is clean and free of any debris or construction materials. Especially note the opening in the drain basin for any restrictions. The ducting, where secured to the cabinet collars, should be sealed water tight either with gasketing or caulking.

B. Inspect the ionizing-collecting cells to see that all of the ionizing blades are intact, that no large pieces of foreign material are lodged between the plates, and that the cells are properly installed in the cabinet with the spiked ionizing blades located on the air entering side.

C. Check the high voltage leads to see that they are connected to the proper terminal both at the ionizing-collecting cells, the junction box and inside the controller. (Refer to Figure 2 and figure 4.

D. Be sure that the drain lines from the Trion cabinet drain basin are completely connected and properly terminated. A trap or seal of some type should be incorporated in the line to prevent air bypass.

E. Check the water supply line to be sure water is available and that the strainer, solenoid valve, and detergent system are properly installed and connected. (Refer to Figure 10).

F. Be sure that electrical power is available, that the wiring is completed, and that the system blower is ready to energize.

G. Be sure that all access door interlocks are closed.

H. Close the system electrical supply switches, making power available to the Trion controller and the system fan.

I. Turn the controller selector switch to the “ON” position. The blower should run (if installed) and the power supply(s) should be energized. Electrical arcing within the ionizing-collecting cells may occur. It is a normal occurrence caused by accumulation of dusts from construction or other sources in the cell(s) and should subside quickly. If the arcing is continuous and does not subside, recheck the routing of the high voltage leads between the power supply(s) and the cell(s). Refer to the field wiring diagram. The ionizer lead must be connected to the ionizer and the collector lead to the collector.

J. Ensure the detergent tank is clean, then fill the tank 1/8 full with clean water. Do not fill with the detergent until start-up adjustments have been completed.

K. (Review this paragraph in its entirety before initiating the wash start button.)

Next, set the detergent volume setting per wash at the detergent feeder. Manually initiate the wash cycle by pushing the "Wash Start" button on the control. The wash control duration is 70 minutes and by means of a factory preset programmable logic controller (PLC) will sequence the washing events as previously outlined. When the detergent pump is energized, note the amount that is used by observing the reduction in the liquid level in the tank. The usage should be approximately 1 part of detergent to 20 parts of water. The water and detergent requirements for each unit model are listed on the Piping Schematic, Figure 10. To adjust the volume output from the pump, refer to the Detergent System Outline, Figure 9. The pump is a constant displacement type and the amount of detergent forced into the water supply to wash the unit is dependent upon the setting of the control valve in the bypass return line to the reservoir. The side of the translucent reservoir is marked with volume markers. Adjust the control valve to obtain the correct usage for the given unit model, then secure the setting with the Allen head set screw located in the valve adjustment knob. When the correct adjustment has been made, remove the remaining water from the reservoir and fill the tank with initial supply of detergent furnished.

L. When the wash control has cycled out, manually set the programmable timer relay (TR), or initiator clock, located in the control for automatic initiation of the washing operation. This setting can be tailored to the washing frequency best suited for the specific application and may be best explained by example.

Suppose the application of the equipment is to clean restaurant kitchen exhaust air. The collected contaminant to be washed away is of greasy nature, containing particulate such as smoke and fume from the grill, mist and vapors from the French fryer, flour dust and other various matter that is created by normal kitchen operation.

In our example, the restaurant operates Monday through Saturday (closed Sunday) and opens daily at 6:00 a.m. and closes daily at 11:30 p.m. This busy schedule presents a relatively heavy dirt loading and being of greasy nature should be washed away daily. The best time being shortly after closing when the atmosphere has settled but before the greasy contaminant collected has had a chance to harden and setup.

From the above, a wash schedule of every day except Sunday at 1:00 a.m. can be established. As the duration of events preset at the factory is approximately 70 minutes, the cycle will end at approximately 2:10 a.m.

Prior to setting the initiator clock it will be necessary to charge the battery located inside the clock. This is accomplished by turning the selector switch on the front of the control to the "ON" position. A light inside the switch will glow. If it does not glow, check to be sure there is supply line power to the control. DO NOT PUSH THE WASH BUTTON. Allow the control to remain in the "ON" position for 24 to 36 hours while the battery is charging.

To set the initiator clock, it is first necessary to set the existing time, then the program times that are to be initiated.

To set existing time:

1. Depress the reset (R) button to cancel out any previous settings.

2. Slide the P-Run switch to the clock position . Monday (MO) will be indicated.

3. Push the (1 ... 7) button until the present day of the week is indicated.

4. Push the hour (h) button to the present hour of the day.

5. Push the minute (m) button to the minutes past the hour of the day.

6. Slide the P-Run switch to the run position. The colon will blink indicating the clock has been set.

To set the programs (wash times) according to the times in the example outlined above.

1. Slide the auto-manual switch to the auto position.

2. Slide the P-Run switch to the program (P) position. The word "ON" and the number 1 will appear on the display. This indicates the time the first program is to be turned "ON."

3. Push the day (1 ... 7) button until only the day Monday (MO) appears on the display.

4. Push the hour (h) button until the designate hour (01:00) appears on the display.

5. It is not necessary to set the minute (m) as 1:00 o'clock on the hour was the selected wash initiation "ON" time. The "ON" time has now been set.

6. Next, set the program "OFF" time. This will be 1 minute after the "ON" time. A 1-minute duration is adequate program time as the initiation signal is sent to the wash control logic timer instantaneously.
   Push the I/0 (P) button. The word "OFF" and the number 1 will appear on the display. This indicates the set time the first program is to be turned "OFF."

7. Push the day (1 ... 7) button until only the day Monday (MO) appears on the display.

8. Push the hour (h) button until the hour 01:00 appears on the display.

9. Push the minute (m) button until the time 01:01 appears on the display. Program 1, wash time "ON" and "OFF," for Monday has now been set.

10. Next set the second program which will be the Tuesday (TU) washing. Push the program I/0 (P) button. The word "ON" and the number "2" will appear on the display.

11. Repeat the setting process for TU as outlined above in steps 3 through 9 for MO "ON" - "OFF" time.

12. After the wash program has been set for TU, repeat the same setting procedure for WE, TH, FR and SA. Omit SU.

13. Slide the P-Run switch to the run position. The existing time of day will show on the display. The six selected wash days established in the example have been set.

NOTE: Using the above procedures, different washing days and "ON - OFF" times may be established and set into the initiator clock to best serve a specific application.

NOTICE: Once the reset key (R) is pressed, the previous time and program will be cleared to the initial state.


M. Kitchen Exhaust Applications
For safe and proper operation adhere to the following instructions and procedures:

1. Exhaust systems shall be operated during all periods of cooking in restaurant applications.

2. Filter-equipped exhaust systems shall not be operated with filters removed.

3. The posted instructions for manually operating the fire extinguishing system shall be kept conspicuously posted in the kitchen and reviewed periodically with employees by the management.

4. Listed exhaust hoods shall be operated in accordance with the terms of their listings and the manufacturers instructions.

5. Cooking equipment shall not be operated while its fire-extinguishing system or exhaust system is not operating or otherwise impaired.

4. Wash Control and Detergent System Settings

Some dirt’s being more tenacious than others are more difficult to remove and require a stronger detergent solution. Average settings have been factory set. Best possible settings for any given installation, however, are determined through experience. Determination can be made by visually examining the collecting elements after the first few washings.

To adjust the volume of detergent used within the given time setting, loosen the knurled knob with an Allen wrench on the control valve located in the by-pass line. Refer to the Detergent System Outline. Turning the knob clockwise increases the volume and counter clockwise decreases the volume. When adjustment has been made, be sure to retighten the setscrew.

5. Routine Maintenance

A. Washing Frequency
The frequency that the collected dirt is to be washed from the unit depends upon the type and amount of dirt in the air to be cleaned. Dirt which is greasy in nature tends to harden after collection and should be washed away often. Likewise, units operating under extremely heavy dirt loads should be washed more often as a large build-up of collected material will have a tendency to “blow-off” if permitted to remain on the collecting elements for long periods of time. In that the type and amount of dirt varies geographically (and from one location to another in any given area) it is recommended to start operation with a washing frequency of at least once a week. This schedule may then be altered as needed after visual examinations of the collected material contained on the ionizing-collecting cells. Daily washing is not unusual for units operating on heavy welding fume, kitchen exhaust hoods or similar applications.

B. Detergent
Effective washing is dependent upon detergent. The detergent reservoir should be examined on a routine basis, a minimum tank level established and never permitted to empty. An empty tank not only means poor washing, but can also be detrimental to the pump. The inside of the tank should be kept clean, free from dirt and foreign objects. The detergent, as supplied by Trion, Inc., is formulated specifically for electronic air cleaners. If substitutes are used, they must be approved by Trion, so as to not void the warranty. They should be safe for use in ventilation systems and non-caustic, as 95% of the ionizing-collecting cells are constructed of aluminum, special high voltage insulation and gasket seals.

C. Electrical Operation
The Air Boss controller (Optional) contains a digital LED display for kilovolt and milliampere readings. The milliammeter should be observed on a routine basis to be sure that it is reading within the prescribed operating range as marked on the data plate. For those units containing a voltmeter, the collector voltage should be between 6 and 7 KV, and the ionizer between 12.5 and 13.5 KV.

The ATS controller and remote PWM box both have LED indicating lights to show power to the PWM power supplies. Flickering or failed LED’s indicate electrical arcing and/or power failure.

6. Periodic Maintenance

A. Water Wash System – Every 6 Months
The water wash spray pattern should be checked on each nozzle to be sure that a full spray pattern is developed. Distorted patterns are usually caused by dirt in the nozzle orifice, which can be cleaned by inserting a small gage, soft copper wire into the orifice. If any one manifold contains several nozzles that are restricted, the drain plug at the idler end of the manifold should be removed, after the nozzles have been cleaned, and the manifold flushed with clean water. The main supply line strainer and the strainer in the detergent system should be checked and cleaned. Check the wash manifold drive linkage connections and tighten or adjust as required.

B. Fire Suppression System (IF INSTALLED) – Every 6 Months
Properly trained and qualified personnel shall complete inspection, cleaning and servicing of the fire suppression system.

All actuation components, including remote manual pull stations, mechanical or electrical devices, detectors, fire-actuated dampers, etc., shall be checked for proper operation in accordance with the manufacturers listed procedures. In addition to these requirements, the specific inspection requirements of the applicable NFPA standard shall also be followed. If required, certificates of inspection and maintenance shall be forwarded to the authority having jurisdiction.

C. Controller – Every 12 Months
The inside of the controller cabinet should be examined for accumulated dirt and dust. If required, the components should be cleaned using a good brand of electrical contact cleaner. All terminal connections should be checked for securement and tightened or reworked as required.

D. Ionizing-Collecting Cell – Every 6 to 12 Months
Remove and inspect the ionizing-collecting cells for excessive dirt accumulations not removed by the integral washing system. Manually clean as required in a soak tank, commercial car wash, or with a pressure hose or pressure cleaner using a low pressure setting. At this time, particular care should be taken in cleaning each of the insulators.

E. Motors – Every 24 Months
As the operation of detergent pump motor is limited, frequent oiling is not required. Lubricate with several drops of SAE 10 motor oil every two years. DO NOT OVER OIL. The manifold drive motors are factory lubricated for life and do not require oiling.

F. Filter Devices – Every 4 to 6 Months
Hoods, impingers, metal mesh filters, ducts and other appurtenances shall be cleaned to bare metal at frequent intervals prior to surfaces becoming heavily contaminated with grease, oil or other contaminant. It may be advantageous to clean readily removable items, such as impingers, metal mesh filters or other permanent filter devices in a soak tank, with a pressure hose or pressure cleaner low setting. After cleaning to bare metal, components shall not be coated with powder or other substance.

When a cleaning service is used, a certificate showing dates of inspection and/or cleaning shall be maintained on the premises.

At the start of the cleaning process, electrical switches that could be accidentally activated shall be locked out. Components of the fire suppression system (if installed) shall not be rendered inoperable during the cleaning process.

Care should be taken not to apply cleaning chemicals on any fusible links or other detection devices of the automatic extinguishing system.

7. Troubleshooting

A. Introduction

This section on troubleshooting provides a description of potential malfunctions, their cause, location and correction. A Troubleshooting Reference Chart listing the most probable causes and corrections follows the general text.

The electronic air cleaner is the unit within the system that has the highest efficiency collection rating and is also the one with the highest potential for malfunction. When a malfunction does occur, the outage is usually found in the electrical secondary circuit in the ionizing collecting cell(s).

Indicating lights are installed in the face panel of the control to monitor the electrical operation of each power supply and the ionizing collecting cell(s) they energize. The quantity of power supplies per unit is dependent upon unit size with one or two power supplies for each ionizing collecting cell tier in height. Other than the basic hand tools, it is advantageous to have a volt/ohm/milliammeter with a 20 KVDC high voltage probe. These instruments are standard catalog items by several manufacturers.

B. Secondary Short Circuit

The most common outage is a short in the secondary circuit and is best located through the process of elimination. Symptoms are a flickering indicating light accompanied by an arcing noise in the ionizing collecting cell(s) or an indicating light that is not glowing.

A flickering light with an arcing noise is an indication of a high resistance short circuit and a light that is not glowing is an indication of a dead short. (A light that is not glowing can also be an indication of an open circuit in the primary circuit. Refer to the paragraph on open circuits.) The short may be in the power supply, the high voltage cables or the ionizing collecting cell(s). To isolate the short to any one of these three components, proceed as follows:

1. Disconnect both high voltage leads from their respective terminals in the power supply and support them away from any point of contact.

2. Energize the power supply:

   1. If the light still flickers or does not glow, the trouble is indicated to be in the power supply. First, check the inline fuse mounted on the circuit board and replace if it is blown. Second, replace the power supply in its entirety.

   2. If the light glows steady with the leads disconnected, the power supply is indicated to be normal.
      
      NOTE: It will be necessary to close the access door electrical interlock switch operated by the access door and affix the junction box lid with hardware supplied to close the electrical interlock switch on the box, to complete the primary circuit to the power supply.
       

3. Next, reconnect both high voltage leads to their respective terminals inside the power supply and disconnect them at the ionizing collecting cell(s). Support them away from any point of contact and energize the power supply.

   1. If either high voltage lead is defective the light will indicate the trouble. Each lead may then be checked separately by disconnecting them, one at a time, from their respective terminals at the power supply. When a lead is found to be defective, replace it in its entirety. Do not repair or splice.

   2. If the light glows steady with the leads disconnected at the ionizing collecting cell(s) the trouble is then indicated to be in the ionizing collecting cell(s).
      
      The trouble can then be isolated to, a single cell, or the ionizing or collector section of a given cell as follows:

      1. First determine if the short is in the ionizing section or the collecting section by connecting each high voltage lead to its respective section, one at a time, and energizing the power pack. (The lead not connected must be supported away from any point of contact.) The short symptoms will still exist for the section in which the short is located. If the trouble causing the short is bridging both sections, then the short will be indicated in both sections when they are individually connected

      2. When the short is isolated to a cell tier, remove all the cells within the tier and visually check the sections indicated to contain the short.

         • If the short is in the ionizer section, look for a broken or defective insulator.

         • If the short is in the collector section, look for a large piece of foreign material bridging the
           collector plates or a defective insulator.

         • If the short is indicated to be in both sections, it will probably be a foreign object bridging the air gap between the ionizer and the collector.

   3. Open Circuits
      Although open circuits can occur in the secondary they usually take place in the primary. If the unit contains only one power supply and the indicating light does not glow the outage is probably one of the following.

      1. Supply line power to the control disconnected. Reconnect.

      2. Open access door interlock in control of electronic air cleaner. Be sure all access doors are properly closed and secured.

      3. Blown in line fuse located on the power supply circuit board. Replace Power Supply.

      4. Outage in the power supply. Look for charred or burned components or a loose wiring connection. Replace power supply or reconnect wiring.

      5. Defective indicating light. Replace light.

   4. Malfunctions other than short or open circuits. Refer to trouble reference chart below.

8. Spare Parts

Recommended spare part quantities are usually based on the unit size and the amount of units per installation. For specific recommendations, consult the Trion factory or nearest Sales Office. Consideration, however, should be given to stocking the following components:

Part Numbers are not listed as they are subject to change. Always state Unit Model and Serial Numbers when ordering parts.

Model 75 Units With No Washing System

1. Introduction and Principle of Operation

The Trion electronic air cleaner is technically known as an electrostatic precipitator. In this type of equipment, all airborne particles, even of microscopic size, are electrically charged (positively) as they pass through a high voltage ionizer. These charged particles are then attracted and adhere to a series of parallel collecting plates, which form the negative elements of an electrostatic field.

The ionizer consists of charged stainless steel spiked blades spaced between grounded electrodes. The collecting section consists of parallel plates arranged so that each alternate plate is charged while the intermediate plates are electrically grounded.

Periodically, depending on the type and concentration of contamination in the air, contaminate is washed from the plates by manually removing the cells and washing with a pressure washer.

Two major functional components comprise the air cleaner:

1. Ionizing-collecting cells to ionize and collect airborne particulate matter.

2. Power supply(s) to supply high voltage direct current to the ionizing-collecting cells.

Normally, systems are designed for collection efficiencies in the range of 90% or more. Collecting a contaminant at these efficiencies, especially when there are high concentrations can result in large accumulations in a relatively short period. Therefore, maintenance must encompass two areas; the operation of the equipment for efficient collection and the systematic removal of the collected contaminant.

2. General Description

The ionizing-collecting cells (contaminate collecting elements) are housed in the cabinet on slide rails. They can be removed from the cabinet as required, through the end access door, by sliding them out like drawers. On multi-cell units, all of the electrical connections between cells in a given tier are automatically made through spring plunger connectors. On the access end, the high voltage cables from the power supplies are connected to the junction box on top of the cabinet. The high voltage cables from the junction box to the individual tiers are factory wired. When installing cells into the cabinet, observe the directional arrows on the cell end plates. The side of the cell containing the spiked ionizer blades always must be located on the air entering side. The spring plunger connectors, located on one end of each cell, will always face toward the back of the Model 75 Cabinet.

Both the air entering and air leaving side of the cabinet contain either metal mesh filters or perforated plate, whichever was specified. These items act as trash screens, and provide resistance for even air distribution.

The Power Supply(s) convert the 115 volt, 60HZ, single phase AC supply to the high voltage DC needed to power the ionizing-collecting cells. Potential of 13 KVDC are required for the ionizer sections and 6.5 KVDC for the collector sections of the cells.

3. Initial Start-up

A. Inspect the inside of the adjoining ductwork and Trion cabinet to be sure it is clean and free of any debris or construction materials. Especially note the opening in the drain basin for any restrictions. The ducting, where secured to the cabinet collars, should be sealed water tight either with gasketing or caulking.

B. Inspect the ionizing-collecting cells to see that all of the ionizing blades are intact, that no large pieces of foreign material are lodged between the plates, and that the cells are properly installed in the cabinet with the spiked ionizing blades located on the air entering side.

C. Check the high voltage leads to see that they are connected to the proper terminal both at the ionizing-collecting cells, the junction box and inside the controller. (Refer to Figure 2 and figure 4.

D. Be sure that the drain lines from the Trion cabinet drain basin are completely connected and properly terminated. A trap or seal of some type should be incorporated in the line to prevent air bypass.

E. Be sure that electrical power is available, that the wiring is completed, and that the system blower is ready to energize.

F. Be sure that all access door interlocks are closed.

G. Close the system electrical supply switches, making power available to the Trion controller and the system fan.

H. Turn the controller selector switch to the “ON” position. The blower should run (if installed) and the power supply(s) should be energized. Electrical arcing within the ionizing-collecting cells may occur. It is a normal occurrence caused by accumulation of dusts from construction or other sources in the cell(s) and should subside quickly. If the arcing is continuous and does not subside, recheck the routing of the high voltage leads between the power supply(s) and the cell(s). Refer to the field wiring diagram. The ionizer lead must be connected to the ionizer and the collector lead to the collector.

I. Kitchen Exhaust Applications
For safe and proper operation adhere to the following instructions and procedures:

1. Exhaust systems shall be operated during all periods of cooking in restaurant applications.

2. Filter-equipped exhaust systems shall not be operated with filters removed.

3.The posted instructions for manually operating the fire extinguishing system shall be kept conspicuously posted in the kitchen and reviewed periodically with employees by the management.

4. Listed exhaust hoods shall be operated in accordance with the terms of their listings and the manufacture instructions.

5. Cooking equipment shall not be operated while its fire-extinguishing system or exhaust system is not operating or otherwise impaired.

4. Routine Maintenance

A. Washing Frequency
The frequency that the collected dirt is to be washed from the unit depends upon the type and amount of dirt in the air to be cleaned. Dirt which is greasy in nature tends to harden after collection and should be washed away often. Likewise, units operating under extremely heavy dirt loads should be washed more often as a large build-up of collected material will have a tendency to “blow-off” if permitted to remain on the collecting elements for long periods of time. In that the type and amount of dirt varies geographically (and from one location to another in any given area) it is recommended to start operation with a washing frequency of at least once a week. This schedule may then be altered as needed after visual examinations of the collected material contained on the ionizing-collecting cells. Daily washing is not unusual for units operating on heavy welding fume, kitchen exhaust hoods or similar contaminants.

B. Detergent
Effective washing is dependent upon detergent. The detergent, as supplied by Trion, Inc., is formulated specifically for electronic air cleaners. If substitutes are used, they must be approved by Trion, so as to not void the warranty and should be safe for use in ventilation systems and non-caustic, as 95% of the ionizing-collecting cells are constructed of aluminum and special high voltage insulation and gasket seals.

C. Electrical Operation
The Air Boss controller (Optional) contains a digital LED display for kilovolt and milliampere readings. The milliammeter should be observed on a routine basis to be sure that it is reading within the prescribed operating range as marked on the data plate. For those units containing a voltmeter, the ionizer readings should be between 12.5 and 13.5 KV.

The ATS controller and remote PWM box both have LED indicating lights to show power to the PWM power supplies. Flickering or failed LED’s indicate electrical arcing and/or power failure.

5. Periodic Maintenance

A. Fire Suppression System (IF INSTALLED) – Every 6 Months
Properly trained and qualified personnel shall complete inspection, cleaning and servicing of the fire suppression system.

All actuation components, including remote manual pull stations, mechanical or electrical devices, detectors, fire-actuated dampers, etc., shall be checked for proper operation in accordance with the manufacturers listed procedures. In addition to these requirements, the specific inspection requirements of the applicable NFPA standard shall also be followed. If required, certificates of inspection and maintenance shall be forwarded to the authority having jurisdiction.

B. Controller – Every 12 Months
The inside of the controller cabinet should be examined for accumulated dirt and dust. If required, the components should be cleaned using a good brand of electrical contact cleaner. All terminal connections should be checked for securement and tightened or reworked as required.

C. Ionizing-Collecting Cell – Every 6 to 12 Months
Remove and inspect the ionizing-collecting cells for excessive dirt accumulations. Manually clean as required in a soak tank, commercial car wash, or with a pressure hose or pressure cleaner using a low pressure setting. At this time, particular care should be taken in cleaning each of the insulators.

D. Filter Devices – Every 4 to 6 Months
Hoods, impingers, metal mesh filters, ducts and other appurtenances shall be cleaned to bare metal at frequent intervals prior to surfaces becoming heavily contaminated with grease, oil or other contaminant. It may be advantageous to clean readily removable items, such as impingers, metal mesh filters or other permanent filter devices in a soak tank, with a pressure hose or pressure cleaner low setting. After cleaning to bare metal, components shall not be coated with powder or other substance.

When a cleaning service is used, a certificate showing dates of inspection and/or cleaning shall be maintained on the premises.

At the start of the cleaning process, electrical switches that could be accidentally activated shall be locked out. Components of the fire suppression system (if installed) shall not be rendered inoperable during the cleaning process.

Care should be taken not to apply cleaning chemicals on any fusible links or other detection devices of the automatic extinguishing system.

6. Troubleshooting

A. Introduction

This section on troubleshooting provides a description of potential malfunctions, their cause, location and correction. A Troubleshooting Reference Chart listing the most probable causes and corrections follows the general text.

The electronic air cleaner is the unit within the system that has the highest efficiency collection rating and is also the one with the highest potential for malfunction. When a malfunction does occur, the outage is usually found in the electrical secondary circuit in the ionizing collecting cell(s).

Indicating lights are installed in the face panel of the control to monitor the electrical operation of each power supply and the ionizing collecting cell(s) they energize. The quantity of power supplies per unit is dependent upon unit size with one or two power supplies for each ionizing collecting cell tier in height. Other than the basic hand tools, it is advantageous to have a volt meter with a 20 KVDC high voltage probe. These instruments are standard catalog items by several manufactures.

B. Secondary Short Circuit

The most common outage is a short in the secondary circuit and is best located through the process of elimination. Symptoms are a flickering indicating light accompanied by an arcing noise in the ionizing collecting cell(s) or an indicating light that is not glowing.

A flickering light with an arcing noise is an indication of a high resistance short circuit and a light that is not glowing is an indication of a dead short. (A light that is not glowing can also be an indication of an open circuit in the primary circuit. Refer to the paragraph on open circuits.) The short may be in the power supply, the high voltage cables or the ionizing collecting cell(s). To isolate the short to any one of these three components, proceed as follows:

1. Disconnect both high voltage leads from their respective terminals in the power supply and support them away from any point of contact.

2. Energize the power supply:

   1. If the light still flickers or does not glow, the trouble is indicated to be in the power supply. First, check the inline fuse mounted on the circuit board and replace if it is blown. Second, replace the power supply in its entirety.

   2. If the light glows steady with the leads disconnected, the power supply is indicated to be normal.
      
      NOTE: It will be necessary to close the access door electrical interlock switch operated by the access door and affix the junction box lid with hardware supplied to close the electrical interlock switch on the box, to complete the primary circuit to the power supply.
       

3. Next, reconnect both high voltage leads to their respective terminals inside the power supply and disconnect them at the ionizing collecting cell(s). Support them away from any point of contact and energize the power supply.

   1. If either high voltage lead is defective the light will indicate the trouble. Each lead may then be checked separately by disconnecting them, one at a time, from their respective terminals at the power supply. When a lead is found to be defective, replace it in its entirety. Do not repair or splice.

   2. If the light glows steady with the leads disconnected at the ionizing collecting cell(s) the trouble is then indicated to be in the ionizing collecting cell(s).
      
      The trouble can then be isolated to, a single cell, or the ionizing or collector section of a given cell as follows:

      1. First determine if the short is in the ionizing section or the collecting section by connecting each high voltage lead to its respective section, one at a time, and energizing the power pack. (The lead not connected must be supported away from any point of contact.) The short symptoms will still exist for the section in which the short is located. If the trouble causing the short is bridging both sections, then the short will be indicated in both sections when they are individually connected

      2. When the short is isolated to a cell tier, remove all the cells within the tier and visually check the sections indicated to contain the short.

         • If the short is in the ionizer section, look for a broken or defective insulator.

         • If the short is in the collector section, look for a large piece of foreign material bridging the collector plates or a defective insulator.

         • If the short is indicated to be in both sections, it will probably be a foreign object bridging the air gap between the ionizer and the collector.

   3. Open Circuits
      Although open circuits can occur in the secondary they usually take place in the primary. If the unit contains only one power supply and the indicating light does not glow the outage is probably one of the following.

      1. Supply line power to the control disconnected. Reconnect.

      2. Open access door interlock in control of electronic air cleaner. Be sure all access doors are properly closed and secured.

      3. Blown in line fuse located on the power supply circuit board. Replace Power Supply.

      4. Outage in the power supply. Look for charred or burned components or a loose wiring connection. Replace power supply or reconnect wiring.

      5. Defective indicating light. Replace light.

   4. Malfunctions other than short or open circuits. Refer to trouble reference chart in this section.

7. Spare Parts

Recommended spare part quantities are usually based on the unit size and the amount of units per installation. For specific recommendations, consult the Trion factory or nearest Sales Office. Consideration, however, should be given to stocking the following components:

Part Numbers are not listed as they are subject to change. Always state Unit Model and Serial Numbers when ordering parts.

See our entire Line of Trion Products and Commercial Kitchen Emissions Systems.

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