Maintenance; Trouble Shooting - Burkert 0450 Instructions De Service

M T
AINTENANCE AND ROUBLE

Maintenance

The valves work without maintenance, even when running dry.

Trouble shooting

Fault
Valves do not switch
Valves switch with
delay or blow out at
the vent connections
Leaky valve blocks
16 - 8640-0450
S
HOOTING
Possible cause
Operating voltage not present or
insufficient
Manual override knob not in neutral
position
Pressure supply insufficient or not present
Pressure supply insufficient or not present
Venting of exhaust air channels insufficient
because silencers are too small or
contaminated (backpressure)
Contamination or foreign bodies in pilot or
main valve
Flat seals missing or wrongly positioned
between valve and baseplate
Remedy
Check the electrical connection
Provide operating voltage acc. to nameplate
Turn knob to zero position
Execute pressure supply with as large a
volume as possible (also for upstream
devices such as pressure controllers,
maintenance units, shut-off valves, etc)
Minimum operating pressure > 2 bar
Execute pressure supply with as large a
volume as possible (also for upstream
devices such as pressure controllers,
maintenance units, shut-off valves, etc)
Minimum operating pressure > 2 bar
Use matching, large-sized silencers or
expansion vessels.
Clean the contaminated silencers.
Pressurized the exhaust air channels in
pulses to blow out contamination
Install a new pilot or main valve if pulses of
compressed air bring no result.
Insert missing seals or replace damaged
seals.