Hitachi Set Free mini-HNRQ1 Series, Service Manual

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25
INSTALLATION
Attention for Removing Service Cover
– Procedures of Removing Cover –
●
Remove the screws according to the figure above.
Note:
Remove the screws and hold the service cover with your hands. If not,
the service cover may fall down.
●
Slowly push the service cover downward.
(2) Securely use two wrenches at the following position when removing or installing the pipe. (If not,
refrigerant leakage may occur.)
Controlling torque of hexagonal wrench
Model Gas side stop valve Liquid side stop valve
RAS-3.0~6.5HNBRKQ1 11~14 N·m 7~9 N·m
RAS-7.0~8.0HNBRMQ1 12~15 N·m 7~9 N·m
RAS-10~12HNBRMQ1 12~15 N·m 8~12 N·m
(3) If the direction of the refrigerant piping has been chosen, please remove the piping cover from the unit,
punch out the holes following the guide line with a screwdriver and a hammer. Then, deburr the holes and
attach insulation (field-supplied) for protection of cables and pipes.
(a) Front and Right Side Piping Work (b) Bottom Side Piping Work (c) Rear Side Piping Work