Denso Movincool CLIMATE PRO K60 Service Manual page 85

Charging the System with R-410A Refrigerant
1. Connection of gauge manifold
a) Remove the crushed end of the pinch-
off tube on the high pressure side of the
refrigerant cycle with a pipe cutter.
b) Connect the process tube fitting to the
pinch-off tube on both sides.
c) Connect the red charging hose of the gauge
manifold to the process tube fitting on the
high pressure side.
Note:
Red hose is for high pressure side and blue hose
(not shown) is for low pressure side.
d) Connect the charging hose (yellow) to the
center of the gauge manifold to the vacuum
pump.
2. Evacuation
a) Open the high pressure valve (Hl) of the
gauge manifold.
b) Turn on the vacuum pump to start
evacuation. It takes 15 minutes.
c) When the low pressure gauge indicates
30 inHg (100 kPa) or larger, turn off the
vacuum pump and close the high pressure
valves of the gauge manifold.
3. Checking vacuum
a) Leave the high and low pressure valves of
the gauge manifold closed for 5 minutes or
more, and confirm that the gauge pointer
does not return to zero.
b) If the gauge pointer returns gradually to
zero, perform leak check according to the
procedure in the next step. After repairing
the leaks, evacuate the system once more
and check vacuum.
Process Tube Fitting
Refrigerant
Cycle Side
Pinch-Off Tube
Low Pressure
Valve (Closed)
Yellow Hose
Vacuum Pump
Gauge
Low Pressure
Valve
Valve Setting
LO HI
Closed Closed
Pressure Gauge
Return
85
Charging Hose
Side
High Pressure Valve
(Closed)
Red Hose
Process Tube Fitting
High Pressure
Side Tube
Valve Setting
LO HI LO HI
Closed Open Closed Closed
30 inHg (100 kPa) or larger
High Pressure Gauge
High Pressure Valve
High Pressure
Side Tube
Pipe Brazing