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English, 6faults – Burkert Type 8642 User Manual

Page 42

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Remedy

Check the electrical connection

Ensure the operational voltage
agrees with that on the
nameplate

Lay out the pressure supply
with as large a volume as
possible (including upstream
devices such as pressure
regulators, service units, shut-
off valves etc.)
Minimum operating pressure

≥≥≥≥≥

2,5 bar

Lay out the pressure supply
with as large a volume as
possible (including upstream
devices such as pressure
regulators, service units, shut-
off valves etc.)
Minimum operating pressure

≥≥≥≥≥

2,5 bar

Use silencers or expansions
vessels of the corresponding
size

Clean out the soiled silencers

Apply pressure surges to the
discharged air channels to blow
out the soiling; Install a new
pilot or main valve if this
measure is unsuccessful.

6

FAULTS

Possible cause

No operational voltage, or
voltage insufficient

Pressure supply insufficient,
or not present

Pressure supply insufficient,
or not present

Insufficient air venting of the
discharged air channel due
to silencers that are too
small or are soiled (back-
pressure)

Soiling or foreign bodies in
the pilot or main valve

Fault

Valve does not
switch

:

Valve switches after a
delay, or blows out of
the air vent ports: