Hitachi mini-HNRQ1 Series Service Manual page 32

● 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.)
Model
RAS-3.0~6.5HNBRKQ1
RAS-7.0~8.0HNBRMQ1
RAS-10~12HNBRMQ1
(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
Attention for Removing Service Cover
– Procedures of Removing Cover –
Controlling torque of hexagonal wrench
Gas side stop valve
11~14 N·m
12~15 N·m
12~15 N·m
(b) Bottom Side Piping Work
25
INSTALLATION
Liquid side stop valve
7~9 N·m
7~9 N·m
8~12 N·m
(c) Rear Side Piping Work