Hitachi HIGHLY WHP08750VCDNC9AU, Installation Manual

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D C I N V E R T E R C O M P R E S S O R C R I T E R I A
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(21) Use the refrigerant of specified brand. When the refrigerant not specified used, it will
possibly cause trouble of the performance and reliability of the compressor by the impurities
in the refrigerant.
(22) The lead wires should be connected to hermetic terminals without being touched on the surface
of the compressor.
(23) Be careful of avoiding oxide scale while soldering during assembly of refrigerating system.
(for example: flow or fulfill dry nitrogen)
(24) The quantity and kind of contamination (the process materials) in the cycle should
be grasped and managed. Carry on reliability test that input contamination a lot than
anticipated contamination quantity.
(25) To avoid water and impurity into he refrigeration system and make sure no leakage of
refrigerant during the operating course. It
’
s required to direct the erector and
maintenance man of air-conditioner.
The below substances shall be provided on the final appliance
’
s accessing parts
to be subject to this maintenance and in the instruction sheet(s) of the final
appliance:
expected
WARNING:
When recharge the refrigerant, the processing must be done by the manufacturer
or manufacturer appointed repair shop* or service agent* because correct type of
refrigerant must be ensured.
Provide the contact and address of the repair shops/agent.
Prohibition of mixing the refrigerants
(26) The start-up current and torsion of compressor
Adjust the start-up torsion of the compre ssor to above 0.55Nm by
inverter.
Confirm and measure the start-up current if change the parts and design.