Troubleshoo ting
40
WBV.PU.003.EN FX116 V1.0
Possible cause
Possible measure
Observe notes and
safety notes
Chapter
aligned
manufacturer's specifications if necessary.
J
Belt drive slips
Tighten in accordance with manufacturer's
specifications.
K
Faulty electrical connector
Check electrical equipment.
"Connection to the power
supply"
Error in the hydraulic system
Check the hydraulics.
L
Motor speed too low during
variable frequency drive
operation
Install external fan, increase motor speed.
"Variable frequency drive
operation"
M
Stiff running caused by
swollen lobe elastomer
Check the medium resistance of the lobe
elastomer.
"Material description for
rotary lobes"
Stiff running caused by
accumulation of solid matter
in the gaps
Clean pump chamber, adjust drive.
"Repair", "Connection to
the power supply"
N
Oil level in the gearbox is not
OK
Chapter
"Gearbox"
"Maintenance"
O
Differential pressure too high
Reduce differential pressure.
"Specifications"
P
Medium viscosity above the
nominal value
Reduce speed. Increase medium temperature.
"Intended use"
Q
Medium viscosity below the
nominal value
Increase speed, decrease medium temperature,
replace wear parts.
"Repair"
R
Medium temperature above
the nominal value
Reduce medium temperature.
"Intended use", "Material
description for rotary lobes"
S
Medium temperature below
the nominal value
Increase medium temperature (after consulting
Vogelsang).