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Page Title:
CHARGING THE REFRIGERANT SYSTEM.-Continued |
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 TM5-4120-384-14
5-16.
CHARGING
THE
REFRIGERANT
SYSTEM.-Continued
Do
not
skip
the
next
step.
u.
After 15 minutes, observe sight glass on back of condenser
section.
Be sure that the, refrigeration system is not in bypass.
When system goes into bypass bubbles will appear in the sight
glass.
Green center
means
refrigerant
moisture
content
is
acceptable.
Yellow center means there is too much moisture in system.
It must be discharged, evacuated, and charqed again.
Milky white
or
bubbly liquid means system has a low
charge.
Clean bubble-free liquid
around
center
means
the
system
i s f u lly charged.
v.
add g a s refrigerant.
I f charge
is
low
to g a s position.
Be
sure
drum
is
switched
(1)
Open drum
valve.
Continue
to
charge
until
sight
glass
is
clean
and
bubble-
(2)
free.
Close low pressure
air
conditioner
charging
valve
and
(3)
refrigerant drum valve.
w.
T u r n MODE SELECTOR switch to OFF.
x.
Check that high and low pressure air conditioner
charging
valves
are closed and remove charging manifold hoses.
On models F18H-3S and F18H-1S install charging valve access
y.
cover and secure with four screws.
On all other models install top
cover (see para 4-11).
5-37
Change 2
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