Energy Master HHPM SERIES, Инструкции по установке, эксплуатации, техническому обслуживанию и ремонту

Страница: 38 / 41

Manual Heat Pump Model HHPM-V.2- SEP 2012
37
Move the heat pump unit to an area that is well ventilated, has a floor drain, and a source of water.
Pour approximately 10 litres of household (white) vinegar in a plastic or metal pail. Elevate the
bucket to a position higher than the heat pump.
Connect flexible hose from the bucket to drain valve and from vent valve to the bucket.
A throttling valve should be added to the outlet hose to control the amount of vinegar flowing
through the heat pump.
Disconnect the fan and compressor wires from their respective contactors so that only the water
pump inside the heat pump will run, circulating the vinegar in and out of the pail.
Apply power to the pump and throttle the outlet valve to allow vinegar to circulate at a rate of
approximately 8 L/m.
Household vinegar is a mild acid. It is in a diluted form as sold in the store so it is limited in
descaling capabilities. If the solution in the pail is discoloring or scale particles are observed, it is cleaing
satisfactorily.
Continue descaling action for 1/2 hour or until foaming stops then turn off the heat pump.
Areas with particularly hard water may require descaling with a stronger chemical. Food grade
cleaners are available at Energy Master Co.,Ltd. or sale representative.
The procedure for descaling using the stronger cleaner is the same as given above; however, the
cleaner container will provide additional information and instructions on the particular product's
characteristics and usage. These instructions must also be followed.
When descaling is completed, the heat pump should be flushed with clean water to remove residual scale
and cleaning solution.
WARNING!
- Never perform descaling with the heat pump attached to the hot water system. This will
introduce the cleaning solution and all dissolved scale into the water lines.
- Only qualified service technicians should perform the following procedure.
- Avoid breathing the fumes! Do not get solution in eyes! Use adequate ventilation!
Flushing Procedure:
Disconnect the heat pump from the system water piping at the pipe unions near the water inlet and
outlet.
Thoroughly rinse out the pail and refill with clean water. Place the heat pump hoses back into the