38
BECKER VADS 1500+
Display text Display
Release contact /
-switch
Effect
Cause
Remedy
„Oil pump fault“
auxiliary contact
Motor protection
switch [F3]
Shutdown and
fault message
F3 has triggered
Electrical supply line to the
Check oil pump Check oil
pump for short circuit Clean
suction connection of pump
Check the setting value of the
motor protection switch
"Ceiling vent. Mal-
function"
Auxiliary contact
for motor protec-
tion switch [F4.1];
[F4.2].
Shutdown and
fault message
F4.1 and/or F4.2
has triggered
Checking the electrical supply
to the cabinet fans
Check outer fan guard for
damage Check fan for short
circuit
„Motor fan fault“
auxiliary contact
Motor protection
switch [F5]
Shutdown and
fault message
F5 has triggered
Electrical supply to the
Check forced cooling fan of
the drive motor
Check fan for short circuit
Remove foreign objects from
the valve gate Check the set-
ting of the motor protection
switch.
"Oil filter change"
[22] Differential
pressure switch
Warning message
in the display
Oil filter cartridge
clogged
Renew cartridge
„Vacuum too high“
„Pressure too high
[1] Pressure trans-
ducer
Shutdown and
fault message
When the soleno-
id valve is open,
the unit is swit-
ched off after the
set overrun time.
Open the shut-off valve of the
line or check the air filter (for
vacuum operation).
Table 7.1: Fault messages
Other faults
Problem
Cause
Remedy
Unit in manual mode does not start
A fault message is present
-
Unit does not start in automatic/PLC
mode
A fault message is present
Display messages
System pressure is not shown cor-
rectly in the display
Wiring or pressure transducer de-
fective
Check wiring to pressure transducer
Table 7.2: Other disturbances
