Subject to change · 27897500 · 10.2016 · EN
Page 23
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14. Troubleshooting
14.1 How to proceed
›
Get an overview on the function of the product in connection with the overall system.
›
Try to find out whether the product had provided the required function in the overall system before the error occurred.
›
Try to detect changes in the overall system, into which the product has been installed:
»
Have the operating conditions or the operating range of the product changed?
»
Have modifications (e.g. conversions) or repairs been carried out at the overall system (device / unit, electrics, control) or
at the product? If so, which modifications?
»
Has the product or the device been operated correctly?
» How does the fault tend to show?
›
Get a clear impression about the cause of trouble. Possibly consult the direct operator or machine operator.
14.2 Fault table
Problem / fault
Possible cause
Elimination
Electric motor does not turn on during
commissioning
›
Electric cable or mains plug defective
Have the cable replaced by a skilled
electrician
›
Supply voltage missing
Establish the power supply or activate
the electric fuse
›
On/off switch defective
Replace on/off switch
›
Motor defective
Replace motor (repair at
manufacturer's premises)
›
Pump defective
Replace pump (repair at
manufacturer's premises)
›
Viscosity too high (medium)
Warm up the oil
Electric motor switches off during
operation
›
Electric motor overheated
Let the motor cool down, clean any
contaminated ventilation slits
›
Pump blocked
Replace pump (repair at
manufacturer's premises)
Volume flow is clearly too low
›
Filter element contaminated
Replace filter element
›
Viscosity too high
Warm up the medium
›
Suction height too large
Adjust suction height
›
Leak on suction side
Replace suction hose or seal
connection points (re-tighten them)
›
Wear of the pump
Replace pump (repair at
manufacturer's premises)
Operating noise too loud
›
Filter element contaminated
Replace filter element
›
Viscosity too high
Warm up the medium
›
Suction height too large
Adjust suction height
›
Leak on suction side
Replace suction hose or seal
connection points (re-tighten them)
›
Wear of the pump
Replace pump
›
Off-line filter unit standing on a
vibration-sensitive surface
(e.g. sheet metal)
Improve site conditions
Pump does not suck
›
Leak on the suction side
Replace suction hose or seal
connection points (re-tighten them)
›
Unit pumped empty
(with refilling)
Prime the unit (0.3 l)
Table 7: Fault table
