Buhnen HB 720 R/S, Translation Of The Original Operating Manual

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What, if…
26
5 What, if…
This Section summarises the status and error messages and provides help in eliminating
errors.
If malfunctions occur please check first
• that the power supply
• and compressed-air supply are functioning correctly, and
• whether there is mechanical damage to the device or supply lines (power supply,
compressed air).
If you nd any mechanical damage, the device may in no circumstances be started up
again. Have it checked and repaired by a qualified service agent.
5.1 Status and error messages in the display
Indication Cause Action
OFF The controller is switched off Switch on (4)
--- • The measured value to be
displayed is greater than 999
or less than -99
• Parameter adjustment is
locked
entsperren: siehe Kapitel 3.4.2
F1H, F2H Sensor breakage (disruption) F1: Replace sensor
F2: Repair of device needed
F1L, F2L Sensor fault, short circuit
Average temperature LED
flashes
Target value reduction after
prolonged period of non-use
Actuate trigger
IAC Temperature limiter is active Switch off device or change to Standby and
allow to cool down
SER Service case occurred Have the device checked by a qualified
service agent.
5.2 Troubleshooting
Fault Possible cause Remedy see Section
Nozzle goes on dripping Nozzle valve partially
obstructed or damaged
Clean or replace nozzle end 6.2.1, 6.3.1,
6.3.3
Too little or no melt is
discharged
Operating pressure too low Increase operating pressure
(max. 6 bar)
3.4.3
Compressed-air supply
disconnected
Check copressed-air supply
Nozzle system clogged Clean or replace cone nozzle
and if necessary nozzle end
6.2.1, 6.3.1,
6.3.3
Stock temperature too low Raise temperature 3.4.1
Compressed air escapes
from closure cap (10)
Insufficient cover pressure Increase cover pressure 6.4
Compressed air escapes
from service unit
Connections not airtight Tighten or replace gaskets
GB
H2200XM_DE-EN_200720.indd 26 26.07.21 08:55