DK50 3x4VR/M
NP-DK50-3x4VRM_ED-EN-2_10-2018
- 28 -
10/2018
TROUBLESHOOTING AND REMEDYING PROBLEMS
19. SOLVING COMMON PROBLEMS
Caution!
Disconnect
the
equipment from the mains before
starting work!
Troubleshooting may only be performed by
trained service personnel!
Adjusting the pressure setting of
the safety valve is expressly
prohibited!
Pressure relief valve (PRV)
The pressure relief valve automatically begins
to vent air from the system if the pressure in
the compressed air circuit exceeds its pre-set
value. The pressure relief valve (1) closes as
the pressure drops. (Fig. 15)
Pressure in the compressed air
circuit can only increase because
of an increase in flow resistance
in the compressed air lines or as
a result of a dryer malfunction
(e.g. solenoid valve malfunction)
and therefore repeated opening
of the relief valve requires a dryer
function check and repairs if
necessary!
Consultation
with
the
manufacturer is required before
any adjustment is made to the
relief valve!
The outlet openings on the relief
valve may not be blocked and the
egress
of
compressed
air
through them may not be
restricted.
Tab. 3
A
B
C
D
E
F
G
H
I
Fig. 15
Fig. 14
1
