Burkert Type 0344 - Manual (Page 4)

8
Danger!
Discharge of medium due to leaking device!
If the O-rings are forgotten or incorrectly inserted during installation
of the pilot valve, the device will be damaged and medium will be
discharged.
▶ Before screwing in the pilot valve, correctly insert O-rings into the
depressions.
5.5 electrical connection of the cable plug
Warning!
Risk of injury due to electrical shock!
▶ Before reaching into the system, switch off the power supply and
secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations for
electrical equipment!
If the protective conductor contact between the coil and body is
missing, there is danger of electrical shock!
▶ Always connect protective conductor.
▶ Check electrical continuity between coil and body.
Procedure:
→
Tighten cable plug (for permitted types see data sheet), observing
max. torque 1 Nm.
→
Check that seal is fitted correctly.
→
Connect protective conductor and check electrical continuity between
coil and body.
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9
Authorized cable plug e.g.
Type 2508 or other suitable
cable plug in accordance with
DIN EN 175301-803 Form A
Seal
max. 1 Nm
5.5.1 electrical connection - pulse
DC connections:
Terminal 1 = closed +
Terminal 2 = open +
Terminal 3 = GND -
Terminal 4 = Protective conductor
Protective conductor
connection
2 4 3
1
The connection terminals in the cable plug are identified with
the numbers 1 to 3 according to the terminals on the valve.
Procedure:
→
Connect the pulse valves (variable code CF 02).
→
For direct current versions connect negative terminal to terminal 3.
note!
Important information:
• Avoid emitting pulses simultaneously to both coil windings.
• Do not switch any other consumers (relays, etc.) at the same time
as the terminals.
• The coil connection, to which voltage is not applied, must be galvani-
cally isolated (open).
• If two or more valves are switched in parallel, ensure that this
requirement is met by using 2-pole or multi-pole switches.
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10
6 MainTenance, TrOuBleshOOTing
6.1 safety instructions
Warning!
Risk of injury from improper maintenance!
▶ Maintenance may be carried out by authorized technicians only and
with the appropriate tools!
Risk of injury from unintentional activation of the system and an
uncontrolled restart!
▶ Secure system from unintentional activation.
▶ Following maintenance, ensure a controlled restart.
6.2 Malfunctions
Type 0340: Shipment may have caused the position to occupy a
middle position.
Procedure:
→
Apply pressure to connection P and briefly seal connection A/B,
→
Using your finger, press piston through connection R into the end
position.
If malfunctions occur, check:
→
the device has been installed according to the instructions,
→
the electrical and fluid connections are correct,
→
the device is not damaged and all screws have been tightened,
→
the voltage and pressure have been switched on,
→
the pipelines are clean,
→
corresponding orifice is used in vacuum mode of the pump
capacity (Type 0343 / 0344).
→
Type 0343: operating and control pressure (control pressure must
be at least 2 bar above operating pressure).
Valve does not switch
Possible cause:
• Short-circuit or coil interrupted.
• Medium pressure outside the permitted pressure range.
• Manual emergency actuation locked.
Valve does not close
Possible cause:
• Internal space of the valve is dirty.
• Manual emergency actuation locked.
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Type 0340, 0343, 0344