Elmo Rietschle S-VSI 300(42) User Manual
Page 33
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Malfunctions: Causes and elimination
Fault
Cause
Troubleshooting
Important
Machine is switched
off by the motor pro-
tection switch
Mains voltage/ Frequency
does not correspond with the
motor data
Check by qualifi ed electrician
Section 5.5
Connection to motor terminal
board is not correct
Motor protection switch is not
set correctly
Motor protection switch is
triggered too quickly
Use a motor protection switch
with an overload-dependent
delayed switch off that takes
into consideration the short
term excess current at start
up (version with short circuit
and overload trigger as per
VDE 0660 Part 2 orIEC 947-4)
Pumping capacity is
insuffi cient
The mesh fi lter is dirty
Clean or replace the mesh
fi lter
Section 7.2.2
Section 7.4
The suction pipe is too long or
too narrow
Check the hose or the pipe
Section 5.3
Machine or system leaking
Check the pipework and
screw connections for leaks
and to ensure that they are
fi rmly seated
Section 7.2
8
Malfunctions: Causes and elimination