Troubleshooting
Vacuum pump system SCC 950
50
Translation of original Operating Instructions, English, KNF 304771-304773 07/18
The hand terminal
display shows "No
connection", when a
button on the
touchscreen is
touched a warning
sound is output.
Vacuum pump sys-
tem switched off.
Switch on vacuum pump system with mains
power switch. Mains power switch must illumi-
nate.
The hand terminal
belongs to a different
SCC 950 vacuum
pump system.
Use the paging function (see Paging the vacu-
um pump system, page 34) to determine wheth-
er the correct hand terminal is used.
Wireless connection
is interrupted.
Check whether the hand terminal is being used
outside the wireless range.
Make sure that the wireless space is not dis-
turbed by electric devices or metal objects.
If necessary, place hand terminal onto the
system in order to identify that the wireless con-
nection is the source of the problem.
Wireless module
defective.
Contact KNF Service.
Vacuum pump
system does not
respond to the
entries on the hand
terminal although
there is no "No
connection" mes-
sage and the pres-
sure display is
shown.
The hand terminal
belongs to a different
SCC 950 vacuum
pump system that is
in operation.
Use the paging function (see Paging the vacu-
um pump system, page 34) to determine wheth-
er the correct hand terminal is used.
Hand terminal's
signal tone sounds.
Batteries almost
empty.
Place hand terminal on switched on system to
charge the batteries.
Alternatively: Run hand terminal via the power
supply.
The hand terminal's
maximum service
duration in wireless
operation is noticea-
bly shorter.
Batteries at end of
service life.
Change batteries (see Chapter 8.1.3, page 35).
Although the hand
terminal is on the
vacuum pump
system, the vacuum
pump system cannot
be controlled.
The contacts on the
base of the hand
terminal or in the
vacuum pump sys-
tem's holder are dirty.
Clean contacts.
Pressure display
shows implausible
values.
Pressure units were
changed.
Select the desired pressure unit.
Leak in the system.
See Tab. 9, "Insufficient vacuum generated
although the pump is running."
Pressure sensor has
to be recalibrated.
Contact KNF Service.
Tab. 10 (2nd part)
