Subject to change · Filter Unit FAPC 016 · 1020 · EN
Page 30
www.argo-hytos.com
15. Troubleshooting
15.1
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.
Problem / fault
Possible cause
Elimination
Electric motor does
not turn on during
commissioning
›
Electrical cable or mains plug defective
›
Supply voltage missing
›
On/off switch defective
›
Motor defective
›
Pump defective
›
Viscosity too high (medium)
›
Have cable replaced by a skilled electrician
›
Establish the power supply or activate the electric fuse
›
Replace on/off switch
›
Replace motor (repair at manufacturer's premises)
›
Replace pump (repair at manufacturer's premises)
›
Heat medium
Electric motor
switches off during
operation
›
Electric motor is overheated
›
Pump is blocked
›
Let the motor cool down, clean any contaminated
ventilation slits
›
Replace pump (repair at manufacturer's premises)
Volume flow is clearly
too low
›
Filter element contaminated
›
Suction strainer contaminated
›
Viscosity too high
›
Suction height too large
›
Leak on the suction side
›
Wear of the pump
›
Replace filter element
›
Replace / clean suction strainer
›
Heat medium
›
Adjust suction height
›
Replace suction hose or seal connection points
(re-tighten them)
›
Replace pump (repair at manufacturer's premises)
Operating noise too
loud
›
Filter element contaminated
›
Suction strainer contaminated
›
Viscosity too high
›
Suction height too large
›
Leak on the suction side
›
Filter unit standing on a vibration-sensitive
surface (e.g. sheet metal)
›
Replace filter element
›
Replace / clean suction strainer
›
Heat medium
›
Adjust suction height
›
Replace suction hose or seal connection points
(re-tighten them)
›
Improve site conditions
Pump does not suck
›
Leak on the suction side
›
Unit pumped empty (with refilling)
›
Suction strainer clogged
›
Replace suction hose or seal connection points
(re-tighten them)
›
Prime the unit (0,3 l)
›
Clean / replace suction strainer
Oil on the fan wheel
cover
Oil leaking out of
terminal box
›
Shaft seal leaky
›
Residual oil at the housing after filter
element change
›
Screwing leaky
›
Replace motor (repair at manufacturer's premises)
›
Clean filter unit
›
Check screw joints, re-tighten and / or seal them
Table 6: Fault table
15.2
Fault table
