Elmo Rietschle V-DTN 16/26/41 - Manual (Page 24)

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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)
The blow out fi lter cartridge is
dirty. Clean or replace the fi lter
cartridge Section 7.2.1
Section 7.4
The regulating valve is dirty so
that the permissible pressure
is exceeded. Clean or replace the regulat-
ing valve Section 7.2
Section 7.4
Blowing capacity is
insuffi cient Intake fi lter and/or blow out
fi lter are dirty Clean or replace the intake
fi lter Section
7.2.1Section
7.4
The pressure line 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
Blades are damaged Replace blades Section 7.2.2
Section 7.4
8 Malfunctions: Causes and elimination