88 0h r – Elmo Rietschle G-BH7e User Manual
Page 47
© Gardner Denver Deutschland GmbH
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Servicing
Keypad
(PC)
1)
Malfunction
Cause
Remedy
Carried
out by
Motor too hot because of
excessive currents or frequent
and too long accelerations
Check dimensioning of side
channel blower.
Operator
Impeller jammed
Repair side channel blower.
Service
*)
OH3
(53)
Temperature
monitoring of the
motor has been
triggered
PTC or thermostat not
connected or defective
Connect or repair PTC or
thermostat.
Service
OH4
(54)
Overtemperature
frequency inverter
Frequency inverter too hot
inside
Reduce frequency inverter
load.
Improve cooling
Operator
Mains voltage too high
Check voltage supply
Electrician
Braking operation
Increase deceleration times. Operator
OU
DC−bus
overvoltage
Earth leakage at motor side
Check motor cable and motor for
earth faults. (Separate motor and
frequency inverter)
Electrician
Pr5
(79)
Internal fault
Defective EEPROM
Contact manufacturer
1 Values in parentheses: error number indicated by the PC parameter setting program (in preparation).
*) Can only be repaired by the operator if the maintenance manual is on hand!
8.1.4 Fault indication reset (TRIP-RESET)
20
28
X3
3
1
OFF
4
6
ON
88
0H
r
01 61
000
1
a
b
c
d
e
j
g
f k i h
PS
m n o
p
q r
Hi
Hz
%sh
rpm
°C
W
m
A
V
Lo
2
5
88888
8888
888
8
a
b
c
d
e
j g f k i h PS
m n op
q r
Hi
Hz
%sh
rpm
°C
W
m
A
V
Lo
z
y
w x
v
t
u
s
ne2bhxn355
Fig. 26: Fault indication reset (TRIP-RESET)
How to reset the frequency inverter if a fault
occurs (TRIP−Reset):
Connect
hand−held keypad to the
communication interface during operation.
Read and take down fault indication on the
keypad display.
Inhibit frequency inverter.
Disconnect
pump−motor unit from the mains.
Carry out a fault analysis and eliminate the
fault.
Restart the pump−motor unit.
NOTE
The fault indication "EEr" triggered by an
external encoder can also be reset via a
HIGH−LOW signal at terminal E1 if the fault
has been eliminated in advance.
8.2
Service/ after-sales service
Our Service is available for work (in particular the
installation of spare parts, as well as
maintenance and repair work) not described in
these Operating Instructions.
Please observe when returning the
pump−motor unit to the manufacturer:
The
pump−motor unit must be delivered
complete, i.e. not dismantled.
The original rating plate of the pump−motor
unit must be fixed properly, intact and
legible.All warranty claims are voided for
pump−motor units delivered for a damage
expertise without the original rating plate or
with a destroyed original rating plate.
In case of warranty claims, the manufacturer
must be informed of the operating conditions,
operating duration etc. and additional detailed
information must be provided on request if
necessary.
The
pump−motor unit may not present a
danger to the workshop personnel.
–
Pump−motor units with contact to
hazardous substances must be
decontaminated.
–
A declaration of clearance must be
provided (
48).