Purging Procedures, Leak Test, And Test Run - Mitsubishi Electric MXZ-3B24NA Manual De Instalación

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
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*4 to 5 turns
*Open
-
Hexagonal wrench
-
-
Control
valve
-
Stop valve cap
(Torque 19.6 to 29.4 N•m,
*Close
200 to 300 kgf•cm, 15 to
Service port cap
(Torque 13.7 to
17.7 N•m, 140 to
180 kgf•cm, 10 to
13
When attaching the control valve to
Precautions when using
the control valve
form or loosen if excess pressure is
A
Open
When attaching the control valve to
Service port
the service port, make sure that the
Close
valve core is in closed position, and
then tighten part A. Do not tighten
Charge hose
core is in open position.
Union
Union
Indoor
D C B A
unit
Union
Union
Refrigerant gas
operating valve
Gauge manifold
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
-
Stop valve
Liquid pipe
Outdoor unit
Stop valve with
service port
Gas pipe