Table of Contents
MAINTENANCE INSTRUCTIONS
Airflow Adjustment
The airflow could be adjusted by adjusting pulleys of blower motor or belt tension with proper
mounting and alignment of pulleys:
- Refer to fan performance tables in the catalog for selecting applicable airflow, RPM and brake
horse power at specified static pressure.
- Select the appropriate drive as per motor and blower characteristic in the catalog.
- The set screw shall be loosened to make the pulley moving.
- Adjust pulley's diameter, opening counter clockwise to reduce RPM and further reduce airflow,
while closing clockwise increases RPM and airflow.
- Tighten the set screw and then install the belts.
- Test the unit operating airflow for further adjustment.
Crankcase Heater
Periodic checking for proper operation or crankcase heater is highly recommended as follows :
a) Check continuity of the heater using multimeter device.
b) Check grounding of the heater by Meggar device (to prevent electrical hazards).
c) Observe whether the heater is warming down the compressor near the oil sump.
Cleaning of Coils & Filters
- Turn off the power supply.
- Take out access panel of evaporator coil.
- Remove the filter from its access panel.
- Protect electrical components and motors from water washing.
- Clean the coil by flushing water by pressure washer followed by compressed air from supply to
return direction.
- Filter shall be cleaned every six month, in some hygienic application it is recommended for
replacement.
- Cleaning drain pan and trap is recommended once in a year to prevent bacteria growing under
the coil.
MAINTENANCE INSTRUCTIONS
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Table of Contents
Troubleshooting
