Elmo Rietschle F-CEVF (31),(41),(43) - Manual (Page 22)

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Malfunctions: Causes and elimination
8 Malfunctions: Causes and elimination
Fault Cause Troubleshooting Important
Machine is
switched off
by the motor
protection
switch Mains voltage/ Frequency
does not correspond with the
motor data Check by qualifi ed electrician Section 5.5
Check all electrical connec-
tions
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 over-
load trigger as per VDE 0660 Part 2
orIEC 947-4)
Blower operates without con-
nection to a system Connect system Section 5.3
Insuffi cient
suction ca-
pacity Filter insert is full Empty fi lter insert Section 7.2.1
Suction pipe is too long or too
narrow Check the the suction pipe Section 5.3
Machine or system leaking Check the pipework and screw con-
nections for leaks and to ensure that
they are fi rmly seated Section 7.2
Machine gets
too hot Ambient or intake temperature
is too high Ensure it is being used properly Section 2.3
Blower sucks too little air Check the rotation direction resp. cross
sections of the pipes Section 6.1.1
Section 5.3
Filter insert is full Empty fi lter insert Section 7.2.1
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.