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Toshiba MCY-MAP0401HT Manual

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19
Full opening of the valve
• Open the valve of the outdoor unit fully.
• Using a 4mm-hexagonal wrench, open fully the
valve key on the liquid side.
• Using a spanner open fully the valve key on the
packed valve at suction gas side.
• Using a pair of pinchers, open fully the handle on the
ball valve at the discharge gas side.
Be careful that the handling of the ball valve differs
from that of the packed valve.
How to open the ball valve at gas side
Valve handling precautions
• Open the valve stem or the handle until it strikes
the stopper.
It is unnecessary to apply further force.
• Securely tighten the cap with a torque wrench.
• Cap tightening torque
Position of grooves for driver
*1. When opened fully, do not apply an excessive
torque after the screwdriver hit the stopper;
otherwise a trouble may be caused on the valve.
Heat insulation for pipe
• Apply the heat insulation to the pipework separately.
(liquid, suction and discharge).
• Use thermal heat insulation which can withstand
temperatures of 120°C or more.
CAUTION
• Upon completion of the pipework connections fit
the piping/wiring panel and the pipe cover.
Gaps between the pipes and the cover are to be
filled using a suitable putty or silicone.
• If the pipework is fitted in the downward or
sideways position, ensure that the base plate
and side plate are closed and sealed.
• If an opening is left unsealed there is a risk of a
fault due to the entering of water or dust.
Valve size
Ø9.5
Ø15.9
Charge port
33 to 42N•m (3.3 to 4.2kgf•m)
20 to 25N•m (2.0 to 2.5kgf•m)
14 to 18N•m (1.4 to 1.8kgf•m)
Valve unit
Charge port
Using a minus screwdriver,
turn it counterclockwise by
90˚ until it hits the stopper.
(Full open)
Flare nut
Grooves
for driver
Closed completely Opened fully
3
REFRIGERANT PIPING
… 22 …


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