INVENTOR DHW-C3.5/A1-K, Руководство по обслуживанию

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HEAT PUMP WATER HEATER MAINTENANCE
42
3. Wled a new electronic
expansion valve.
The model of new electronic
expansion valve should be the
same as that of the origianl one.
Wrap the valve with wet cloth in
case of burnt gliding block and
entering of water.
During welding, charge nitrogen
of 0.5±0.1kgf/cm
2
(relative
pressure).
Perform leak test for the welding
spot.
4. Mount the coil of the electronic
expansion valve.
After welding the connecting
pipe, mount the coil.
If plug of electronic expansion
valve coil has been disconnected,
it is necessary to cut off the power
and reenergize it after it is
connected.
Disassembly and Assembly of Water Pump
Remarks: It is a must to cut off the power and discharge the water before disassembling the water pump.
Step Illustration Handling Instruction
1 ˊ Remove the water pump
Disconnect connecting pipe of
master unit.
Remove top cover and front
side panel.
Remove the electric box and its
parts.
Screw off the connector on both
sides of water pump.
2
ˊ
Remove the power cord of
water pump
Open the electric box cover.
Remove power cord of water
pump.