ENGLISH
MAINTENANCE AND SERVICE
63
MAINTENANCE AND SERVICE
Maintenance activities
In order to ensure optimal availability of the unit, a number of checks and inspections on the unit and
the field wiring have to be carried out at regular intervals, preferably yearly. This maintenance should
be carried out by your local agreed technician.
WARNING
• Always check for gas (refrigerant) leakage before starting work of unit by using the gas sniffer
(Gas sniffer must be suitable for R290).
• If a leak occurs, close all covers of the product, notify the end user and customer service.
• Be sure to check there are no continuously operating open flames (for example an operating
gas appliance) and ignition sources (for example an operating electric heater) near the
product.
• Be sure to check the product shall be stored in a well-ventilated area.
• Use restrictions unauthorized peaople entering safety zone.
− Make sure the water pressure is not too high or too low.
− Check if water is leaking from the water pipe.
− Check whether the outdoor unit heat exchanger is blocked by dust or snow.
− Check if snow is blocking the front or bottom of the product.
− Check if the condensate is properly discharged from the outdoor unit.
− Check if the outdoor unit defrost is working properly.
When the unit is not going....
CAUTION
• If the product is not used for long time, we strongly recommend not to switch off the power
supply to the product.
• If the unit is not used and switch off the power supply to the unit for long time, we strongly
recommend to drain off all water in the unit by certificated person.
• When the power is applied for the first time, operate the product after preheating for 2 hours.
To protect the unit by increasing the oil temperature of the compressor.
• If power is not supplied, some special product-protecting actions (such as water pump anti-
locking) will not performed.
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