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Reference for Installation
■ MH080FXCA4A
1 Check the piping connections.
2 Connect the charging hose of low pressure side of manifold gauge to the
packed valve having a service port (5/8” Packed valve)as shown at the
figure (Value stem:1/2”-20UNF).
WARNING:
Make the electrical connection and leave the system into “stand by
A
mode”. Do not turn on the system!.
B
C
This is necessary for better vacuum operation (full OPEN position of
Electronic Expansion Valve -EEV -).
Vacuum
Pump
3 Open the valve of the low pressure side of manifold gauge ounter
clockwise.
4 Purge the air from the system using vacuum pump for about 30 minutes.
- Close the valve of the low pressure side of manifold gauge clockwise.
- Make sure that pressure gauge show -0.1MPa(-76cmHg)after about
Valve stem
30 minutes.
This procedure is very important in order to avoid gas leak.
- Turn off the vacuum pump.
Stem cap
- Remove the hose of the low pressure side of manifold gauge.
5 Set valve cork of both liquid side and gas side of packed valve to the
Service port
open position.
6 Mount the valve stem nuts and the service port cap to the valve,and
tighten them at the torque of 183kgf•cm with a torque wrench.
7 Check for gas leakage.
- At this time,especially check for gas leakage from the 3-way valve ’s
stem nuts,and from the service port cap.
Samsung Electronics 10-4