Burkert Type 6525 - Manual (Page 18)

16 - 6524/6525
I
NSTALLATION
, C
OMMISSIONING AND
M
AINTENANCE
english
Measures to be taken before putting into service
Check all connections, voltages and the operational pressure!
Ensure that the max. operational conditions (see rating plate) will not be exceeded!
Unlock the manual actuator for electrical operation!
Faults
Fault Possible cause Correction
Valves does
not switch
Operational voltage too low or
not present Check the electrical supply connections.
Ensure that the electrical power supply is the same as
that specified on the rating plate.
Manual override not in neutral
position Set the manual override to the zero position.
Compressed air supply not
available or insufficient Carry out the dimensioning of the compressed air
connection with volumes as large as possible (including
that of upstream pressure regulators, service units, cut-
off valves etc.).
Valves switch
with a delay, or
exhaust
through the
venting ports Compressed air supply not
available or insufficient Carry out the dimensioning of the compressed air
connection with volumes as large as possible (including
that of upstream pressure regulators, service units, cut-
off valves etc.).
Valves are not in the starting
position (without current)
during pressure build-up
Apply pressure to the valve block before you switch the
valves!
Insufficient venting of the
exhaust channels due to
silencers that are too small or
are soiled (backpressure)
Use silencers or expansion channels with sufficient
dimensions.
Clean soiled silencers.
Impurities or foreign matter in
the pilot valve or main valve
Blast through the exhaust channels with pulsed
compressed air, to blow out impurities.
Install a new pilot or main valve if these measures bring
no improvement.