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8.2.
installation of coil
Warning!
Escaping medium!
When a sticking nut is loosened, medium may escape.
•
Do not tighten sticking nut any further.
Electric shock!
If the protective conductor is not connected, there is a
risk of electric shock!
•
Check protective conductor contact after installing the
coil.
Overheating, risk of fire!
Connection of the coil without pre-assembled valve will
result in overheating and destroy the coil.
•
Connect the coil with pre-assembled valve only.
Installing the coil:
Warning!
Danger due to electrical shock if coil incorrectly
installed!
•
During installation ensure that the coil is situated firmly
on the housing cover so that the protective conductor
connection of the coil is connected to the valve housing.
20
english
Torque 2.8 Nm
Fig. 4:
Torque
8.3.
malfunctions
If malfunctions occur, check whether:
→
the device has been installed according to the
instructions,
→
the electrical and fluid connections are correct,
→
the device is not damaged,
→
all screws have been tightened,
→
the voltage and pressure have been switched on,
→
the pipelines are clean.
22
english
→
Connect coil housing to the core guide pipe.
→
Screw on coil with nut.
note!
Device will be damaged if the wrong tools are used!
Always use a wrench to tighten nut. If other tools are used
(e.g. pliers), the device may be damaged.
Fig. 3:
Installing the coil
Valve does not switch
Possible cause:
•
Short-circuit or coil interrupted.
•
Core or core area dirty.
•
Medium pressure outside the permitted pressure range.
Valve does not close
Possible cause:
•
Internal space of the valve is dirty.
•
Small control bore in the diaphragm blocked.
•
Diaphragms defective.
Type 6211 EV
Nut
Core guide tube
O-ring
Locking pin
english
21
english
23
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