WELDY sealer GW800 Manual De Instrucciones página 7

Spare part replacement
Before opening it, remove the tool from the mains.
The machine may only be used by qualified specialists or under
their supervision.
• Replacement of control box
Remove all screws on plastic housing, remove
housing by removing front end covering, screw off
the 4-M3 screws that connect control box to rear
base and pull out control box. Loosen the 8-M3
screws on the two sides, remove the control box
and replace a new one, reassemble the complete
machine (shown in the following figure).
Note: conform to color on wiring.
• Replacement of motor
Remove all screws on housing, remove front end
covering to remove housing, remove the 4-M5
installation screws on the support, remove the main
chain guard and separate the upper and lower sup-
port. Remove the covering on the bottom of upper
support and weld connection between motor and
fuse holder, screw off the 2-M5 installation screws
of the motor, take off motor and replace a new one.
Weld back the removed wires and reassemble on the
opposite sequence.
Note: keep upper and lower pressure roller is parallel during assembling.
• Replacing of upper and lower pressure roller
Remove the chain guard, take off the forcing off screws on the two chain wheels and then remove chain wheel
and chain. For upper rubber wheel, it can be removed if the two screws on bearing housing that on both sides
of press plate are removed. For lower rubber wheel, it can be removed if the bearing on one side of chain
wheel is dismounted. Reassemble them in the same method.
Troubleshooting
Error
Power Off
Fuse damaged
Motor not run
Speed control circuit board damaged
Motor burned
Motor speed
Speed control knob is loosened
can't be
Power tube disruption
regulated
Cause
Rear base of
control box
Troubleshooting
Check that the mains is in ON condition
Replace fuse
Replace speed control circuit board or control box
assembly
Replace motor
Tighten speed control knob
Replace power tube or control box assembly
4-M3
8-M3
2-M5
7