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MAINTENANCE
For General Ventilation Fan Maintenance, refer to Exhaust Fan Operation, Installation, and
Maintenance Manual.
To guarantee trouble-free operation of this control, the manufacturer suggests following these guidelines.
Most problems associated with unit failures are directly related to poor service and maintenance.
Please record any maintenance or service performed on this equipment in the documentation section
located at the end of this manual.
WARNING: DO NOT ATTEMPT MAINTENANCE ON THIS FAN OR CONTROL UNTIL THE
ELECTRICAL SUPPLY HAS BEEN COMPLETELY DISCONNECTED, LOCKED OUT AND TAGGED
OUT.
General Maintenance
1. Control enclosure should be kept clean and free from any grease or dirt build-up.
2. All fasteners should be checked for tightness each time maintenance checks are performed prior to
restarting unit.
3. Control enclosure door panel should be securely closed after maintenance to prevent tampering or
electrical shock.
4. Real-Time Clock (RTC) battery should be replaced every 10 Years. Use CR2032 or equivalent.
5. Fan blades path should be kept clean and free from any obstruction.
6. Maintenance schedule is based on running 5,000 hours per year and is a guideline to ensure safe and
continuous operation of the fan(s). In case of extreme operating (e.g., high humidity, aggressive
environment, or large temperature variations), shorter intervals between service are recommended.
Occasionally oil and dust may accumulate causing imbalance. If the fan is installed in a corrosive or
dirty atmosphere, periodically inspect and clean the blades, inlet, and other moving parts to ensure
smooth and safe operation.
Every 3 Months
Enclosure Cooling Fan Filter Maintenance
1. Remove outer black plastic housing of the enclosure fan to gain access to the fan filter. The cover is
held in place by frictional clips, simply pry on it to remove.
2. Inspect the fan filter for grease/debris. If the filter is dirty, clean or replace. Replacement fan filter part
number: MC32658 (pack of 5).
WARNING: IF THE COOLING FAN FILTER CLEANING IS NOT PERFORMED, GREASE/DEBRIS
BUILDUP MAY OCCUR RESULTING IN VFD/ELECTRONICS FAILURE DUE TO OVERHEATING. VFD
WARRANTY MAY BE DENIED IF FILTER INSPECTION IS NOT PERFORMED ON A QUARTERLY
BASIS AND LOGGED ON THE MAINTENANCE RECORD.
6 Months After Startup
1. Check for hot spots on motor, wiring, and controls and re-tighten all loose electrical connections. Gear
motors are built for this specific application and are designed for use with variable frequency drives.
2. Re-tighten all loose electrical connections.
3. Check oil level in gear motor. If oil level is low, replace oil with Shell Omala 220 or equivalent.
Acceptable oil fill level is within half an inch or closer to the fill level plug.
4. Ensure blades are intact, level, and clean as required. Blades are made from coated aluminum for
corrosion protection and ease of cleaning.
5. Physically check all guy wires and safety cables, re-tighten clamps if required.
6. Check all nuts, bolts, clamps to ensure they are not missing, loose, or damaged. Repair or replace if
necessary.
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