Thor Kitchen HC-767, Руководство по ремонту, Страница: 61 / 65

Items Precautions
3.Vacuum degassing
* Pipe connection
Connect a red hose to the high pressure side and a blue hose to the low pressure side.
* Vacuum sequence
Open
ķ
,
ĸ
valves and evacuate for 40minutes.
Close valve
ķ
.
Ć Ć
KEY POINTS
1) If power is applied during vacuum degassing, vacuum degassing shall be more effective.
2) Operate compressor while charging refrigerant. (it is easier and more certain to do like
this.)
4. Refrigerant charging * Charging sequence
1) C heck t he amount of re frigerant s upplied to ea ch model a fter completing v acuum
degassing.
2) Evacuate bombe with a vacuum pump.
3) Measure the amount of refrigerant charged.
- Measure the weight of an evacuated Bombe with an electronic scale.
- Charge refr igerant into a B ombe an d measure the w eight. Cal culate the w eight of
refrigerant charged into the Bombe by subtracting the weight of an evacuated bombe.
Ć
KEY POINTS
1
˅
Be sure to charg e the
refrigerant at around 25
o
C
Calculation of amount of refrigerant charged
The amount of refrigerant charged
=a weight after charging
-a weight before charging
(a weight of an evacuated cylinder)
Indicate the weight of an
evacuated Bombe
6 0