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Protective earth conductor
4. Connect the cable to the relevant terminals on the terminal
block.
5. Push the terminal block into the housing of the plug until it
audibly clicks in position.
6. Tighten the locking screw on the plug.
Mounting the plug
7. Push the rubber sleeve 3 and washer 2 into the plug hous-
ing 4.
8. Tighten the cable gland 1.
9. Push the plug onto the mount.
10. Fix the plug with the fixing screw 5.
ð The plug is mounted.
10 Commissioning
Foreign matter
▶ Damage to the valves.
If the plant is new and after repairs, rinse the piping sys-
●
tem with the valves fully open.
ð The plant operator is responsible for selecting the clean-
ing material and performing the procedure.
1. Ensure correct installation.
2. Test the function of the solenoid valve.
3. Check the tightness of the media connections and the
solenoid valve.
4. Slowly fill the solenoid valve with medium.
11 Inspection and maintenance
Danger of burning from hot surfaces!
▶ Solenoid coil heats up during opera-
tion.
Allow the solenoid coil and piping to
●
cool down before servicing work.
Preventive maintenance/cleaning is recommended depending
on the operating conditions and in the event of noticeable
change to the switching times or switching noise.
All the parts marked * are included in the respective wearing
parts kit. When ordering spare parts, please state the com-
plete valve order number.
11.1 Inspection
Check the solenoid coil at regular intervals, depending upon
the ambient conditions, for cracks and deposits of dirt and
check the plug for secure location and good sealing.
The operator is responsible for determining appropriate in-
spection intervals.
www.gemu-group.com
Connection
CAUTION
WARNING
11.2 Cleaning
Foreign matter
▶ Damage to the valves.
If the plant is new and after repairs, rinse the piping sys-
●
tem with the valves fully open.
ð The plant operator is responsible for selecting the clean-
ing material and performing the procedure.
11.3 Solenoid coil replacement
1501
400
Fig. 5: Solenoid coil replacement
1. Disconnect the plug 4 from power supply.
2. Undo the fixing screw 5.
3. Pull the plug 4 and gasket 6 off the solenoid coil 400.
4. Undo the oval headed screws 1501.
5. Pull the solenoid coil 400 off the armature *702.
6. Examine the O-ring *1502 on the armature for hardening,
replace if necessary.
7. Place a new solenoid coil on the armature.
8. Tighten the oval headed screws 1501 diagonally (2.5
Ncm).
9. Push the plug and gasket onto the solenoid coil and
tighten with the fixing screw (60 Ncm).
11 / 20
11 Inspection and maintenance
CAUTION
6
4
*702
*1502
GEMÜ 8257
5
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