Burkert Type 6212 - Manual (Page 6)

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mainTenance, 8.
TrOubleshOOTing
safety instructions 8.1.
Danger!
Risk of injury from high pressure in the equipment!
Before loosening the pipes and valves, turn off the •
pressure and vent the pipes.
Risk of injury due to electrical shock!
Before reaching into the device or the equipment, • switch
off the power supply and secure to prevent reactivation!
Observe applicable accident prevention and safety
•
regulations for electrical equipment!
Warning!
Risk of injury from improper maintenance!
Maintenance may be carried out by authorized techni- •
cians 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. •
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installation of pilot valve 8.2.
Warning!
Escaping medium!
When a sticking screw is loosened, medium may escape.
Do not tighten sticking screws 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
note!
If the tightening torque is too great, the device may
be damaged!
Observe the maximum tightening torque of the screws! •
Device will be damaged if the wrong tools are used!
Always use a right tools to tighten screws. If other •
tools are used (e.g. pliers), the device may be
damaged.
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0.3 ± 0.05 Nm 0.2 ± 0.05 Nm
Installation of pilot valve Fig. 4:
Attach pilot valve to Armature:
→
Tighten the screws with 0.2 ± 0.05 Nm.
Protective conductor function Fig. 5:
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Check functionality of the protective conductor
→
Resistance Test voltage Test current
max. 0,1 Ω 12 V 1 A
malfunctions 8.3.
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, •
Internal space of the valve is dirty, •
Medium pressure outside the permitted pressure range. •
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Type 6212