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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 contact between the coil and
housing is missing, there is danger of electrical 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.
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.
Procedure:
→
Connect coil housing to the core guide pipe.
→
Screw on coil with nut. Observe torque.
→
Check protective conductor.
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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.
Observe torque!
(See table below)
Nut
O-ring
Core guide tube
Locking pin
Fig. 4:
Coil installation
Torque for fastening nut:
Coil type
Coil width
Torque [Nm]
AC10
32 mm or 40 mm
5 Nm
AC19
42 mm
10 Nm
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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.
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.
• Valve opened by manual control (see 7.5).
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9. sparE parTs
Caution!
Risk of injury and/or damage by the use of incorrect
parts!
Incorrect accessories and unsuitable spare parts may cause
injuries and damage the device and the surrounding area.
• Use original accessories and original spare parts from
Bürkert only.
9.1. Ordering spare parts
Replacement part sets
When ordering replacement part sets, quote the sets SET 1,
SET 3 or SET 7 and the identification number of the device.
• See replacement part sets
9.2.
and
9.3
.
• The identification number of the device can be found on
the type label. See also chapter
“6.2. Type label”
.
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Type 6213 EV, 6281 EV
