Mistral MCCT25SS, Руководство пользователя

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connecting pipe
Large pipe(gas)
Small pipe (liquid)
Flare nut
Connector
Low pressure valve
High pressure valve
Flow direction
R22 refrigerant
2-way valve
(6) Open 1/4 turn
valve cap
(1) Turn
(8) Tighten
(2) Turn
3-way valve
(8) Tighten
(1) Turn
(7) Turn to fully open the
valve
(7) Turn to fully open the valve
(8) Tighten
���� � �� �� � ���� �� �
connect to indoor unit
open position
spindle
service port cap
service
valve
connect to outdoor unit
valve core
needle
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indoor unit
valve cap
23
Outdoor unit section
1. Remove the high and low pressure valve caps
with a wrench.
2. Remove the plastic cover for connecting pipes.
3. Align the pipe and connector with one hand,
pre-tighten the fl are nut to the connector
with another hand. Then tighten it with a wrench.
(As the left fi gure shown)
If the suspending section of the connecting pipes exceed 2m, a fi xing bracket should be
installed for every 1.5m to support its weight.
Air Purge
After connecting the indoor and outdoor units , evacuate air and moisture from refrigerant system using a
vacuum pump, as shown here below.
How purging air tubes:
1. Unscrew and remove caps from 2 and 3-way valves.
2. Unscrew and remove cap from service valve.
3. Connect vacuum pump fl exible hose to the service valve.
4. Start vacuum pump for 10-15 minutes until reaching a vacuum of 10 mm Hg absolutes.
5. With vacuum pump still running close the low pressure knob on vacuum pump manifold. Then stop
vacuum pump.
6. Open 2-way valve 1/4 turn then close it after 10 seconds. Check tightness of all joints using liquid
soap or an electronic leak detector.
7. Turn 2 and 3-way valves stem to fully close the valves. Disconnect vacuum pump fl exible hose.