Hitachi Highly WHP05600VUK, Installation Manual

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HEAT PUMP WATER HEATER COMPRESSOR CRITERIA FOR LONG LIFE
SYSTEM
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24 Miscellany
(1) The compressor should be carried carefully to avoid drop, drag ,impact and should not apply
partial force on projection parts such as pipe, hermetic terminals, foot durin g carrying and processing.
(2) The compressor should not be operated to form a vacuum and to absorb air. The compressor only can run
in one direction which according to lead routing wiring diagram. Never reversion otherwise the
compressor will be in trouble.
（
3
）
The compressor should not be left opened in the atmosphere for more than 5 minutes.
When the air entered into the unit system with refrigerant, it will expedite the deterioration of
the oil and result in the capillary depositing and the reducing of insulation resistance.
(4) Electric pulse should not be applied to compressor when it is in vacuum.
(5) The compressor should be kept in the place with low-dust, low-moisture.
(6) The compressor can’t be used in the place with corrosive atmosphere such as hot spring and
chemical warehouse. It should not be the structure often splash water on the surface of the
compressor forcibly.
(7) The trouble of cross valve, electromagnetic valve, defroster, refrigerant controller, fan motor
used in refrigerating system may cause compressor accident .So their reliability should be
ensured completely. Moreover, the way of design, manufacture, application of refrigeration
cycle with less-leak should be adopted.
(8) The main electric circuit should be equipped with fuse or breaker.
(9) Refrigerant should be charged from the end of condenser of refrigerating systems. Never
c harge refrigerant to the compressor directly.
The refrigerant should always be charged in liquid state. When the refrigerant is charged in gas state,
The percent component will possibly be changed. Do not recharge with the remaining refrigerant in the system when
leakage happened. Because the percent component of the refrigerant in the unit system had possibly been
changed.
(10) Temperatures within systems during stable compressor operation should not be less than
-35
℃
to prevent wax precipitation from the oil.
Rubber grommets are designed soft to provide the noise isolation and to lessen vibration
Energy transmission. Stud bolt should be designed to provide sufficient clearance for noise and vibration isolation
and to prevent compressor from coming off its mount.
(13) There should be adequate clearance between the under-surface of Push-Nut and the
upper surface of rubber grommets.
(11) Compressor mounting