Behr Hella R134a Bedienungsanleitung Seite 7

Connections
The multi pressure gauge can be used
for carrying out different work and tests
on vehicle air conditioning systems.
Testing system pressure
Valve settings
Evacuating refrigerant
Valve settings
Building up vacuum
Valve settings
7
Filling refrigerant
Low pressure side, Valve settings
Close all valves immediately after
the filling process!
Filling refrigerant
High pressure side, Valve settings
Close all valves immediately after
the filling process!
Incorrect connection or operation of the
multi pressure gauge can lead to damage
to the measuring equipment, the vehicle
or persons near the vehicle.
The fitting comprises 2 manometers,
one for low pressure (15 bar) and one
for high pressure (30 bar), 4 valves
(Low, Vac, Ref, High) and 4 hose
connections (see illustration).
Low
Closed Closed
Open Open
Open Open
Open
Closed
Low
Closed Closed
• Residual pressure must always be evacuated
before the hose connections are screwed on
or unscrewed.
• The multi pressure gauge may only be used
by competent and qualified persons.
• Appropriate protective clothing must be worn
(gloves, goggles) by the operator.
A Low pressure connection
B Vacuum connection
C Filling connection
D High pressure connection
Vac Ref
Closed
Ref
Closed
Ref
Closed
Vac
Open
Vac
Open
• Open flame is strictly prohibited in the
direct vicinity of the working area.
• The respective health and safety
regulations related to handling refrigerant
must be observed. Improper handling
leads to an explosion/freezing hazard due
to escaping refrigerant.
High
Closed
Open
Open
High
Closed
Open