Elmo Rietschle V-DTE 3/6/8/10 - Manual (Page 24)

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Malfunctions: Causes and elimination
8 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 termi-
nal 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 limitation valve or regu-
lation valve (optional extra) is
dirty so that the permissible
pressure is exceeded. Clean or replace the limitation valve or
regulation valve Section 7.2
Section 7.4
Blowing ca-
pacity is insuf-
fi cient The intake fi lter is dirty Clean or replace the intake fi lter Sect. 7.2.1 / 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 con-
nections for leaks and to ensure that
they are fi rmly seated. Section 7.2
Blades are damaged Replace blades Sect. 7.2.2 / 7.4
Final pressure
(max. excess
pressure)
has not been
reached 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
Blades are worn or damaged Replace blades Sect. 7.2.2 / 7.4
Machine gets
too hot Ambient or intake tempera-
ture is too high Ensure it is being used properly Section 2.3
Cooling air supply is ob-
structed Check environmental conditions Section 5.1
Clean ventilation slots Section 7.2
The limitation valve or regu-
lation valve (optional extra) is
dirty so that the permissible
pressure is exceeded. Clean or replace the limitation valve or
regulation valve Section 7.2
Section 7.4
The machine
makes an ab-
normal noise The compressor housing is
worn (chatter marks) Repair by manufacturer or authorised
workshop Elmo Rietschle
Service
The pressure regulating valve
(if fi tted) is vibrating Replace the valve Section 7.4
Blades are damaged Replace blades Sect. 7.2.2 / 7.4
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.