Hitachi RHUE-3AVHN, Руководство по обслуживанию

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Servicing
Service Manual
238
Contents
SMGB0066 rev.0 - 12/2009

danger
Electrical hazard. Risk of death. -
Before performing any of the service operations described in this chapter, turn all the main switches off and -
place security lockers or convenient warning indicators in order to prevent them from turning on accidentally.
Check and be sure that the LED201 (Red) on the inverter PCB is OFF for all electrical maintenance.
-
Do NOT touch the electrical components when the LED201 (Red) on the inverter PCB is ON to avoid -
electrical shock.

warning
Crush hazards. Can cause serious injuries. -
In case of sharped edged parts, as covers, use security gloves to avoid getting injured. -
In case of blocked or stucked parts, use appropiated tools and eventually lubricants to release them. -
When performing brazing work, besides security gloves it is a must to wear convenient eye protection. -
Do not put any strange material (sticks, etc) into the air inlet and outlet. These units have high speed rotating -
fans and it is dangerous that any object touches them.
Electrical hazard. Can cause serious injuries. -
Do not pour water into the unit. These products are equipped with electrical parts. If water contacts with -
electrical components then it will cause a serious electrical shock.
Do not open the service cover or access the unit without disconnecting the main power supply.
-
In case of fire turn OFF the main switch, put out the fire at once and contact your service contractor. -
Flamable liquids and objects. Fire risk. -
Check to ensure whether there are flammable things around or not when using a burner for pipe connections, -
if not, oil existing pipe inside may ignite.
Do not use any sprays such as insecticide, lacquer, hair spray or other flammable gases within approximately -
one (1) meter from the system.

note
Do not expose the refrigerant cycle to the atmosphere for a long period in order to avoid mixing the water and -
foreign particles into the refrigerant cycle. After removing compressor, replace it quickly. If exposed for a long
period, seal the suction pipe and discharge pipe.
Remove the cap for the compressor just before replacing the compressor. Before mounting the compressor, -
seal the suction pipe and discharge pipe with a tape to protect the compressor from foreign particles. Remove
the tape at pipe connection.
Do not expose the refrigerant cycle to the atmosphere for a long period in order to avoid mixing the water and
-
foreign particles into the refrigerant cycle. After removing compressor, replace it quickly. If exposed for a long
period, seal the suction pipe and discharge pipe.
If circuit breaker or fuse is often activated, stop the system and contact your service contractor.
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