Routine Work; Cleanout Of The Water System; The Cleanout Of Finned Heat Exchanger; Daily Maintenance - Gree GMV series Service Manual

Dc Inverter VRF plus Water Heater Solution Service Manual
MAINTENANCE

1 PURPOSE

In order to guarantee the working life and reliable running of the unit and decrease the the failure rate, please
execute the cleanout and maintenance periodically.

2 ROUTINE WORK

2.1 Cleanout of the Water System

If the water system has been used for long time, there may be scale deposit on pipeline so it shall be cleaned.
Or, the defect of heat exchange, bad heating effect, blockage of the pipeline or damage to the unit may be
caused. It is suggested to clean the water system every 6~12 months
① Energize the unit, and press the button "Temp Setting" for 5s to enter the interface of user parameter
setting.Choose 01 to start the function of " Directly-heated Clean"to feed water into the water tank. When
the water level of the water tank is about 50mm higher than the outlet of circulating water ( circulating pipe
of the unit), press the press the button "Temp Setting" for 5s to enter the interface of user parameter
setting.Choose 01 to turn off the function of " Directly-heated Clean".
② Add cleanser into water tank in properticn.
③ After adding cleanser, press the "temp setting" for 5s to enter the interface of user parameter setting.
Choose 06 to start the function of " Circulated Clean". After circulated cleaning has been running for
30min, it will stop automatically. If it is expected to be turned off within 30min, press " temp setting" for 5s
to enter the interface of user parameter setting. Then, choose 06 to turn off the function of " Circulated
Clean".
④ Drain the water with cleanser and then,clean the cleanser which may stay inside the pipeline and the unit
by the ways mentioned above.

The Cleanout of Finned Heat Exchanger

For better heat exchange, the finned heat exchanger is usually placed outdoors. After a period of time, the fins
will be blocked, which will affect the heat exchange of the condensator and increase the energy
consumption.Therefore, the finned heat exchanger shall be cleaned every 6-12 months. But if there is a great
of pollution, such period shall be shortened.
Clean Method:
① Cut off the power supply.
② Wash the fins repeatedly from the opposite direction of inlet of heat exchanger by pressure gas. Wash it
vertically with the fins to prevent them from collapse.
③ It can be washed by high pressure water but the pressure shall be well controlled. And also, protect the fin
from collapse and the electric components. If there is any oily substance, wash it with water which
contains cleanser.
④ It can also be washed by dust-collector and brush.
⑤ Keep washing it until the original color of the fin can be seen or the water which drops from the fin is clear
water.

2.3 Daily Maintenance

MAINTENANCE
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