Manual Override; Troubleshooting; Led Error Message - GEM 4242 Operating Instructions Manual

17 Manual override

17 Manual override
▶ Manual override only available for "single acting" version.
▶ Control air and the minimum pressure must be available
to use the manual override.
The combi switchbox has a manual override which enables
manual operation of the process valve.
3
Size 1 Size 2
Size 1:
Activating the manual override:
Use a flathead screwdriver (maximum slot width of 6 mm) to
screw in the manual override screw 3 clockwise as far as it
will go.
Deactivating the manual override:
Use a flathead screwdriver (maximum slot width of 6 mm) to
unscrew the manual override screw 3 anticlockwise as far as
it will go.
Size 2:
Activating the manual override:
1. Press in the manual override 3 using a flathead screw-
driver (maximum slot width of 4 mm) as far as it will go
and turn it 90° clockwise.
ð The groove is horizontal.
Deactivating the manual override:
2. Turn the manual override 3 90° anticlockwise using a flat-
head screwdriver (maximum slot width of 4 mm) and re-
lease it.
ð The groove is vertical.
GEMÜ 4242
NOTICE
NOTICE
3
1
2

18 Troubleshooting

18.1 LED error message

Function
Program- No stroke
ming error
Stroke <
min. stroke
After sensor
error
Sensor error OPEN posi-
tion
CLOSED po-
sition
Pneumatic OPEN posi-
fault tion
CLOSED po-
sition
Mid posi-
tion
Supply voltage too low
Internal error
18.2 Troubleshooting
Error
Programming error
no stroke
Programming error
no stroke
Programming error
stroke < min. stroke
Programming error
stroke < min. stroke
Programming error
after sensor error
Sensor error
CLOSED or OPEN
position
40 / 46
CLOSED ERROR
OPEN / CLOSED flash alternately
OPEN / CLOSED flash simultan-
eously
Error cause Troubleshooting
No mounting kit Check the mount-
available ing kit, re-pro-
gramme
Process valve Replace process
faulty valve, re-pro-
gramme
Minimum stroke Ensure minimum
was not reached stroke, re-pro-
(e.g. due to stroke gramme
limiter)
Shut off diaphragm Ensure correct
compressed too compression of the
much (diaphragm shut off diaphragm,
size 8) re-programme
The sensor range Check the mount-
was exceeded dur- ing kit, re-pro-
ing the program- gramme. Note the
ming procedure. maximum stroke
Currently the pro- (see "Technical
cess valve is in the data")
valid sensor range.
Sensor limit ex- Check the mount-
ceeded ing kit, re-pro-
gramme. Note the
maximum stroke
(see "Technical
data")
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OPEN