Evacuation Of The Equipment; Connect The Cable To The Outdoor Unit - Panasonic CU-2S18NBU-1 Service Manual

10.4 EVACUATION OF THE EQUIPMENT

WHEN INSTALLING AN AIR CONDITIONER, BE
SURE TO EVACUATE THE AIR INSIDE THE
INDOOR UNIT AND PIPES in the following procedure.
1. Connect a charging hose with a push pin to the
Low side of a charging set and the service port of
the gas side 3-way valve.
2. Connect the micron gauge between vacuum
pump and service port of outdoor units.
3. Turn on the power switch of the vacuum pump
and make sure that connect digital micron gauge
and to pull down to a value of 500 microns.
4. To make sure micron gauge a value 500 microns
and close the low side valve of the charging set
and turn off the vacuum pump.
5. Disconnect the vacuum pump house from the
service port of the 3-way valve.
6. Tighten the service port caps of gas side 3-way
valve at a torque of 13.3 Ibf.ft with a torque
wrench.
7. Remove the valve caps of both of the 2-way
valve and 3-way valve. Position both of the
valves to "Open" using a hexagonal wrench
(5/32").
8. Mount valve caps onto the 2-way valve and 3-
way valve.
• Be sure to check for gas leakage.
• If micron gauge value does not descend 500 microns, take the following measures:
If the leak stops when the piping connections are tightened further, continue working from step
o
If the leak does not stop when the connections are retightened, repair location of leak.
o
Do not release refrigerant during piping work for installation and reinstallation.
o
Take care when handling the liquid refrigerant, it may cause frostbite.
o

10.5 CONNECT THE CABLE TO THE OUTDOOR UNIT

1. Remove Control Board Cover (Metal) by
loosening 2 screws.
2. Remove Valve Cover (Metal) by loosening 2
screws.
3. Remove Plugs.
4. Fix the conduit connectors to the knock out holes
with lock-nuts, then secure them.
5. Connecting wire between indoor unit and outdoor
unit should be UL listed or CSA approved 4
conductor wires minimum AWG16 in accordance
with local electric codes.
6. Wire Connection to the power supply (208/230V
60Hz) through circuit breaker.
• Connect the UL listed or CSA approved wires
minimum AWG12 to the terminal board, and
connect to other end of the wires to circuit
breaker.
7. Connect the power supply cord and connecting
wires between indoor unit and outdoor unit
according to the diagram as shown.
CAUTION
18
.