Kelvinator KSV25CRG, Руководство по установке, Страница: 16 / 24

16 Outdoor unit installation Kelvinator Air Conditioning
Outdoor unit installation
• Make sure the refrigerant added into the air conditioner is
liquid form.
Caution in handling the packed valve
• To open the packed valve, remove the cap then open the valve
stem using an Allen key until it hits the stopper, do not try to
open it further.
• To close the packed valve, securely tighten the valve stem
using an Allen key, then fit and tighten the cap with a spanner.
When Using the Vacuum Pump
(For method of using a manifold valve, refer to its operation
manual.)
1. Completely tighten the flare nuts, A, B, C, D, connect the
manifold valve charge hose to a charge port of the
low-pressure valve on the gas pipe side.
2. Connect the charge hose connection to the vacuum pump.
3. Fully open the handle Lo of the manifold valve.
4. Operate the vacuum pump to evacuate. After starting
evacuation, slightly loose the flare nut of the Lo valve on the
gas pipe side and check that the air is entering (Operation
noise of the vacuum pump changes and a compound meter
indicates 0 instead of minus). Then retighten the flare nut.
5. Keep the vacuum pump running for more than 15 minutes and
make sure the pressure reading is -76cm.Hg or lower. Now
fully close the low handle of the manifold valve and stop the
operation of the vacuum pump.
6. Turn the stem of the packed valve B about 45 counterclockwise
for 6–7 seconds after the gas coming out, then tighten the
flare nut again. Make sure the pressure display in the pressure
indicator is a little higher than the atmosphere pressure.
7. Remove the charge hose from the Low pressure charge hose.
8. Fully open the packed valve stems B and A.
9. Securely tighten the cap of the packed valve.
Indoor
unit
Refrigerant Outdoor
unit
Packed valve
Flare nut
Stopper
Cap
Valve body
Manifold valve
Pressure gauge Compound meter
-76cmHg
Handle Lo
Charge hose
Low pressure valve
Vacuum pump
Charge hose
Handle Hi
Half union
B. High pressure valve
(2-way) - liquid side
D
Liquid side
Gas side
A. Low pressure
valve (3-way) -
gas side.
C
Fig. 20
Fig. 21
Valve stem