Purging Procedures, Leak Test, And Test Run - Mitsubishi Electric MXZ-3A30NA Installation Manual

4. PURGING PROCEDURES, LEAK TEST, AND TEST RUN

4-1. PURGING PROCEDURES AND LEAK TEST
gas pipe. (The stop valve will not work in its initial state fresh out of the
stop valve on the gas pipe side of the outdoor unit.
fold valve, and stop the vacuum pump.
stop valves on both sides of gas pipe and liquid pipe. Operating with-
fect performance of the air conditioner.
4-2. GAS CHARGE
Perform gas charge to unit.
conditioner for cooling.
Note:
CAUTION:
will be locked.
8
*4 to 5 turns
Stop valve cap
(Torque 19.6 to 29.4 N•m,
*Close
200 to 300 kgf•cm, 15 to
*Open
-
Hexagonal wrench
-
Service port cap
(Torque 13.7 to
17.7 N•m, 140 to
180 kgf•cm, 10 to
13
-
Precautions when using
the control valve
A
Control
valve
Open
Service port
Close
Charge hose
Union
Union
Indoor
D C B A
unit
Union
-
Union
Refrigerant gas
operating valve
for R410A with siphon
Electronic scale for
refrigerant charging
–0.101MPa
Compound pressure
[–760 mmHg
Pressure gauge
Gauge manifold
Stop valve
for GAS
Handle High
Handle
Low
Charge hose
Vacuum pump
Stop valve
for LIQUID
When attaching the control valve to
form or loosen if excess pressure is
When attaching the control valve to
the service port, make sure that the
valve core is in closed position, and
then tighten part A. Do not tighten
core is in open position.
Stop valve
Liquid pipe
Outdoor unit
Stop valve with
service port
Gas pipe
Gauge manifold
-