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2.Service guide & troubleshooting
1. Machine does not start (no led nor feeding function)
Action at customer
Action at service workshop
A
1. Remove cable from out
let.
2. Dismantle the control
panel (chap. 6).
3. Check all cable connec
tions
•
Replace any damaged
cables or components.
4. Reassemble unit and re-
check.
2. Machine suddenly feeds at full speed
(When reconnected, the diode is on but nothing happens as potentiometer is turned)
Action at customer
Action at service workshop
1. Remove cable from outlet.
2. Dismantle the control panel (chap. 6).
3. Check all cable connections
•
Replace any damaged cables or components.
4. Reassemble unit and re-check.
3. Machine starts flashing rapidly during upstart process
Action at customer
Action at service workshop
The motor temperature sensor may be faulty.
1. Remove cable from outlet.
2. Dismantle the control panel (chap. 6).
3. Check cable connections to temperature sensor
•
Replace any damaged cables or components.
4. Reassemble unit and re-check.
Service guide & troubleshooting
Troubleshooting and suggested actions
1. Connect unit to earthed outlet with residual-current device (RCD).
2. Check that emergency stop is out and try to start the machine by means of the On/Off button on the control panel.
3. If the problem persists; send machine to service workshop.
B
1. Connect potentiometer
and a new membrane
panel.
Check if unit is func
•
tional.
2. Optionally short-circuit
position 1 and 3 on K6
(chap. 8, page 20—21).
3. Turn potentiometer to
check if feeding com
mences.
4. Replace membrane panel
if unit is functional.
Send machine to service workshop.
A
1. Disconnect from mains power and let machine rest approximately an hour.
2. Restart.
Important: do not turn the potentiometer too rapidly during upstart.
Wait approx. 5 sec. After the diode is on. This ensures machine can check currents at upstart.
3. If the problem persists; send machine to service workshop.
A
C
1. Disassemble (chap. 6).
2. Detach inbound cable N
(chap. 7, ill. 4).
3. Connect unit to earthed
outlet with residual-current
device (RCD).
4. Measure voltage with multi
meter over cable N and pin
f (chap. 6, ill. 8)
•
If voltage is zero:
– check fuse (chap. 8,
F1).
5. Reassemble and re-check.
B
1. Replace the potentiometer
2. Re-check.
1. Remove cable to temperature sensor (chap. 8, K2) and measure over the
leads.
•
The value should be approx. 11,8kΩ at 23°C (73°F).
2. If short-circuited (0 Ω), check sensor cable.
3. Replace the entire motor—pinion unit if the value is faulty.
D
1. Disconnect cables (chap.
7).
2. Connect unit to earthed
outlet with residual-cur
rent device (RCD).
3. Measure voltage with
multimeter over cables
NS1 and N (chap. 8)
•
If voltage is zero:
– replace emergency
stop with cable (chap.
6).
4. Reassemble and re-check.
Replace circuit board (chap. 6—8).
B
2
E
1. If there is voltage in
the previous two
steps:
– replace circuit
board (chap. 6—8)
C
Continue on next page...
3
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