Zamil PV036 Installation, Operation & Maintenance Manual - Maintenance Instructions
MAINTENANCE INSTRUCTIONS
CRANKCASE HEATER
The function of crankcase heater is to hold the compressor oil reservoir at higher temperature than the coldest part in the system.
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Power must be supplied to crankcase heater for a minimum of 12-hours prior to system start-up. If power is off for 6-hours or more,
crankcase heater must be energized for 12-hours before operating the system. Otherwise compressor damage may result.
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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 Megger device (to prevent electrical hazards).
c) Observe whether the heater is warming down the compressor near the oil sump.
CLEANING OF COILS & FILTERS
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Turn off the power supply.
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Take out access panel of evaporator coil.
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Remove the filter by sliding out.
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Protect electrical components and motors from water washing.
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Clean the coil by flushing water by pressure washer followed by compressed air from supply to return direction.
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Filter shall be cleaned every month, in some hygienic application it is recommended for replacement.
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Cleaning drain pan and trap is recommended once in three months to prevent bacteria growing under the coil.
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