KNF SCC 950 Operating Instructions Manual page 49

Vacuum pump system SCC 950
Vacuum pump system generally
Error
Despite the required pres-
sure decrease the pump
does not start when a
process is started.
Hand terminal
Error
Hand terminal can-
not be taken from
the vacuum pump
system.
Hand terminal's
display stays dark.
Translation of original Operating Instructions, English, KNF 304771-304773 07/18
Cause
Diaphragm and valve
plates have been replaced.
Gas ballast still open.
Hand terminal or software
is not connected to the
vacuum pump system.
The overcurrent protection
circuit of the vacuum pump
system has responded.
Tab. 9 (3rd part)
Cause
Transportation safe-
guard was not re-
moved.
Hand terminal is not
switched on.
Batteries in hand
terminal are empty.
Tab. 10 (1st part)
Remedy
 Make sure that the diaphragms have
the correct shim rings.
 If necessary, carefully tighten the
attachment screws (Fig. 19/2, p. 41)
of the pump head alternately.
 Close gas ballast.
 Establish connection.
 Switch the vacuum pump system off
and on to reset it.
 Make sure that nothing is blocking
the fans on the vacuum pump sys-
tem (Fig. 2/12 and 13, p. 13) and
that there is sufficient air feed and
removal.
 Identify and eliminate cause of pump
overload.
Remedy
 Remove transportation safeguard
(see Chapter 6.1).
 Switch hand terminal on.
 Place hand terminal on switched on vacuum
pump system to charge the batteries.
 Alternatively: Run hand terminal via the power
supply.
Troubleshooting
49