Air Evacuation 23
8
If there is a change in system pressure, refer to Gas Leak Check
section for information on how to check for leaks. If there is no
change in system pressure, unscrew the cap from the packed valve
(high pressure valve).
9
Insert hexagonal wrench into the packed valve (high pressure valve)
and open the valve by turning the wrench in a 1/4 counterclockwise
turn. Listen for gas to exit the system, then close the valve after
5 seconds.
10
Watch the Pressure Gauge for one minute to make sure that there is
no change in pressure. The Pressure Gauge should read slightly
higher than atmospheric pressure.
Figure
7-2
11
Remove the charge hose from the service port.
12
Using hexagonal wrench, fully open both the high pressure and low
pressure valves.
13
Tighten valve caps on all three valves (service port, high pressure,
low pressure) by hand. You may tighten it further using a torque
wrench if needed.
CAUTION
OPEN VALVE STEMS GENTLY
When opening valve stems, turn the hexagonal wrench until it hits against
the stopper. Do not try to force the valve to open further.
NOTE ON ADDING REFRIGERANT
Some systems require additional charging depending on pipe lengths.
The standard pipe length varies according to local regulations.The
standard pipe length is 5m (16'). The additional refrigerant to be charged
can be calculated using the following formula.
Additional refrigerant per pipe length
Connective
Pipe
Length (m)
Air
Purging
Method
Additional Refrigerant
≤
Standard
pipe length
Vacuum
Pump
N/A
> Standard
pipe length
Vacuum
Pump
Liquid Side:
Ø 6.35 (Ø 0.25")
Liquid Side:
Ø 9.52 (Ø 0.375")
Inverter R410A:
(Pipe length – standard
length) x 15g/m
(Pipe length – standard
length) x 0.16oZ/ft
Inverter R410A:
(Pipe length – standard
length) x 30g/m
(Pipe length – standard
length) x 0.32oZ/ft
CAUTION
DO NOT mix refrigerant types.
Flare nut
Cap
Valve stem
Valve body
6 720 866 139 (2016/07)
Bosch Climate 5000
