DENSO CORPORATION CLASSIC PLUS 26 - Manual (Page 46)

TROUBLESHOOTING AND REPAIR
38
22. Refrigerant Charging Work
A. Refrigerant Charging
(1) Remove the charging hose (green) from
the vacuum pump, and connect it to the
refrigerant cylinder (R-22).
(2) Loosen the nut on the gauge manifold
side of the charging hose (green). Open
the valve of the charging hose (green).
Open the valve of the refrigerant cylinder.
(3) Securely place the refrigerant cylinder on
a scale with a weighing capacity of 70 lbs
(30 kg) that is graduated by 0.2 oz (5 g).
(4) Open the high pressure valve of the
gauge manifold and the valve of the
refrigerant cylinder. Charge the system
with refrigerant to the specified amount.
Standard Amount of Refrigerant:
1.87lbs (0.85kg)
If the system cannot be charged with the
specified amount of refrigerant under this
condition, follow the steps below:
(a) Close the high-pressure valve of
manifold.
(b) Operate the refrigerant system.
(c) Slowly open the low-pressure valve
while observing the scale reading.
(d) When the scale reads the specified
amount, immediately close the low-
pressure valve.
(e) Bring the system to a stop.
ƽCAUTION: The amount of refrigerant charged
has a great effect on the cooling capacity of the
unit. Charge to the specified amount, always
observing the scale graduations while charging.
(5) Close the high pressure valve of the
gauge manifold and the valve of the
refrigerant cylinder.
Charging with Refrigerant
Evacuating Air Inside Charging Hose