FAN FILTER UNIT - HIGH EFFICIENCY
INSTALLATION & SERVICE INSTRUCTIONS
Troubleshooting Tips:
• If FFU is turned to 75% and it shut offs after a short time, follow the below steps:
1. Power cycle the FFU-HE.
2. Measure inlet static while the FFU-HE is running.
3. If the inlet static is positive, reduce your airflow device airflow an additional 25%.
4. Return to Step 4, above and finish balancing unit.
• If the unit shuts off still at this 50% setpoint, follow the below steps:
1. Power cycle the FFU-HE
2. Measure inlet static while the FFU-HE is running
3. If the inlet static is positive, reduce your airflow device airflow 25% more.
4. Return to Step 4, above and finish balancing unit.
If experiencing further issues with unit, contact Price Industries Fan Filter help at:
By Email: [email protected]
By Phone: (204) 654-5613 option 5
Low Air Velocity
1. Check prefilter media (only with optional prefilter); replace or clean as necessary.
2. Adjust variable speed control for higher blower output.
3. Check power for proper voltage, amerage, and distribution frequency.
4. Replace HEPA/ULPA filter if the veloicty remains low.
High Air Velocity
1. Adjust variable speed control for lower blower output.
Non-Laminar Flow and/or
Excessive Contamination
1. Ensure that no large obstructions are upstream of airlfow pattern.
2. Determine that no other air-moving devices are operating in or around cleanroom which could disrput the room's
airlfow pattern.
3. Check air velocity and if low, conduct the 'Low Air Velocity' procedure outlined above.
4. Conduct somke and photometer test on HEPA/ULPA filter. Seal or replace.
Motor Keeps Shutting Off
1. Check if unit is ducted.
2. If no, contact Price at [email protected].
3. If yes, check inlet pressure, if postive, re-balance until inlet pressure is zero.
LED Light Turned Red
1. Refer to 'Motor Will Not Run' procedure outlined below.
LED light Turned Yellow
1. Replace filter.
Motor Will Not Run
1. Check that motor has power at correct voltage.
2. Check that the speed controller has power.
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