|
| |
TM 9-4120-367-14
TM 07592B-14/1
6.8 REFRIGERANT CHARGING WITH LIQUID. - Continued
Location/Item
Charging
- Continued
Action
a.
b.
c.
d.
e.
g.
h.
i.
j.
k.
NOTE
Two kinds of refrigerant drums are in
general use. One is equipped with a
single shutoff valve and must be in-
verted when charging liquid refriger-
ant. The other is equipped with a va-
por valve and a liquid valve, which
makes it possible to charge either liq-
uid or vapor when the drum is up-
right.
NOTE
Whenever the refrigerant system has
been opened, a new filter-drier must
be installed before re-charging.
NOTE
Whenever available, use recycled
refrigerant for charging the refrigera-
tion system.
Evacuate the system.
Use only R-22 refrigerant.
Set drum with valve down on scale.
Record the weight.
Subtract 5.5 Ibs (2.5 kg) and mark dial face at
that point.
Connect charging manifold to drum.
Connect charging manifold to high (head) pres-
sure valve.
Open refrigerant tank valve slightly and loosen
hose fitting for a few seconds at manifold to
purge hose.
Tighten fitting at the manifold.
Open high side valve.
Open tank valve until tank weight has decreased
by 5.5 Ibs (2.5 kg).
Remarks
Paragraph 6.6
6-26
f.
|
