Service Address - Burkert 8644 AirLINE Instructions De Service

TROUBLESHOOTING
Fault
Valves do not switch:
Valves switch with delay or
blow out at the vent
connections:
Leaky valve blocks:

Service address:

Steuer- und Regelungstechnik
Chr.-Bürkert-Str. 13-17
Service-Department
D-76453 Ingelfingen
Tel.: (07940) 10-586
Fax: (07940) 10-428
E-mail: service@buerkert.com
or your Bürkert branch (see overleaf)
Type 8644
All manuals and user guides at all-guides.com
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;
Valves not in basic position (no power) during
pressure build-up;
Venting of exhaust aire channels insufficient
because silencers are too small or
contaminated (backpressure);
Contamination or foreign bodies in pilot or
main valve.
O-rings missing or pinched between the
modules;
profile seals missing or wrongly positioned
between valve and baseplate.
M T
AINTENANCE AND ROUBLESHOOTING
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 ≥ ≥ ≥ ≥ ≥ 2,5 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 ≥ ≥ ≥ ≥ ≥ 2,5 bar
Pressurize the valve block before the
valve switch!
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 these measures
bring no result.
Determine the point of leakage or missing
seals.
Insert missing seals or replace damaged
seals.
MT 9