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WITT-GASETECHNIK GmbH & Co KG
Salinger Feld 4-8
: +49 (0)2302 89010
www.wittgas.com
Gas Safety- & Control Equipment
D-58454 Witten
Fax: +49 (0)2302 89013
6.5
Malfunctions and rectification
6.5.1
Malfunction table
Malfunction
Cause
Remedy
•
No production of mixed gas
•
Gas supply closed
•
Power supply interrupted
•
Main fuse is defective
•
Solenoid valve faulty
•
Gas outlet closed
•
The temperature monitor
(18, optional)
has
closed the solenoid
valve
(27)
by reason of
too low mixed gas tem-
perature
•
Open gas supply
•
Check connection to the
mains or connect to the
mains
•
Check, replace if necessary
•
Contact
WITT-GASETECHNIK
•
Open gas outlet
•
Safety system for the down-
stream connected system.
For cancelling the lock see
Sec. 7.7
•
Mixed gas output drops or is
too low
•
Cross-section of the
supply pipe too small
•
Filter in the inlet blocked
•
The inlet pressure has
dropped below the min.
•
Cylinder regulators are
designed for flow setting,
not pressure-setting
•
See instructions on
installation, Sec. 5.4.
•
Clean filters in the inlet or
replace if necessary
(see Sec. 7.4)
•
Increase inlet pressures
(see tech. data, Sec. 9)
•
Install regulators with pres-
sure setting/indicator
•
Gas consumption too high
•
Leaks in the system
•
Rectify leaks
•
Pressure indication on the
manometer too high
•
Solenoid valve does not
close
•
Solenoid valve faulty.
Contact
WITT-GASETECHNIK
•
Receiver pressure switch /
transmitter faulty. Contact
WITT-GASETECHNIK
•
Pressure indication on the
manometer too low
•
Too much mixed gas
drawn
•
Solenoid valve does not
open
•
The inlet pressure has
dropped below the min.
•
Reduce amount of mixed gas
drawn
•
Solenoid valve faulty.
Contact
WITT-GASETECHNIK
•
Receiver pressure switch /
transmitter faulty. Contact
WITT-GASETECHNIK
•
Increase inlet pressures
(see tech. data, Sec. 9)
