- 10 -
13) Both discharge and suction valves must be in the back positions before
disconnecting evacuating and pressure gauges.
The line sizes and refrigerant charges are listed as follows.
MODEL
EQUIVALENT
LINE SET
LIQUID
LINE
SUCTION
LINE
DRAIN
LINE
CHARGE
WM-1500SS
<= 75 FT
1/4" OD
3/8” OD
1/2” OD
R134a/15 OZ
WM-1900SS
<=75 FT
1/4" OD
3/8” OD
3/8” OD
R134a/15 OZ
5.
Use of the adjustable pressure control (if applicable for pump-down)
Suction pressure setting: Cut out=5 psig; Cut in=25 psig; Differential=20 psig
Head pressure setting: Cut out=230 psig; Cut in=150 psig; Differential=80 psig
It may need to adjust the setting in the field to get the right cycle time.
A.
P70 Single/Dual Control
Fig. 8 Adjustable Pressure Control
B.
PS2 Dual Control
Fig. 9 Adjustable Pressure Control
