Hitachi RAS-(2-6)HVNP1(E), Руководство по обслуживанию

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3 Piping work and
refrigerant charge
71
SMGB0087 rev.0 - 12/2013
3
Hexagonal wrench size used for spindle valve:
(*) Size 2HP, 2.5HP 3HP, 4-6HP Standard 4-6 HP Premium, 8-12HP
Gas valve 4 mm 5 mm -
Liquid valve 4 mm 4 mm 4 mm
Do not apply two spanners at
this position. If applied,
leakage will occur.
Stop valve
(Spindle type)
Flare nut
Use two spanners
here for pipe
connection
Do not work with
two spanners
here.
Refrigerant
leakage shall
occur
Position to apply
spanners
Do not apply two
spanners work here
Spindle type Ball type
C A U T I O N
• At the test run, fully open the spindle and ball stop valve.
• If not fully opened, the devices will be damaged.
• Do not attempt to turn service valve rod beyond its stop.
• Do not loosen the stop ring. If the stop ring is loosened, it is dangerous since the spindle will hop out.
• An excess or a shortage of refrigerant is the main cause of trouble to the units. Charge the correct refrigerant quantity
according to the description of label at the inside of service cover.
• Check for refrigerant leakage in detail. If a large refrigerant leakage occurs, it will cause difficulty with breathing or
harmful gases would occur if a fire was being used in the room.