Maintenance And Service; Maintenance And Cleaning - Bosch GHG 660 LCD Professional Original Instructions Manual

Shaping Plastic Tubing (see figure C)
Mount the reflector nozzle 13 (accessory). To
avoid kinking of the tubing, fill the tubing with
sand and plug both ends. Heat the tubing evenly
by by applying the heat from side to side.
Welding Plastics (see figure D)
Mount the reduction nozzle 16 and the welding
shoe 15 (both accessories). The workpieces to
be welded and the welding rod 14 (accessory)
must be of the same material (e.g. both of PVC).
The seam must be clean and grease-free.
Carefully heat up the seam location until it be-
comes doughy. Please note that the temperature
difference between the doughy and liquid state
of plastic is low.
Feed in the welding rod 14 and allow it to run in-
to the gap so that a uniform bead is produced.
Shrinking (see figure E)
Mount the reduction nozzle 16 (accessory). Se-
lect the diameter of the heat-shrinkable sleeve 17
(accessory) according to the workpiece (e.g. a
cable lug). Heat the heat-shrinkable sleeve evenly.
Defrosting Water Pipes (see figure F)
Before heating pipes, check to make sure
that it is actually a water pipe. Water lines of-
ten do not differ in appearance from gas lines.
Gas lines are not to be heated under any cir-
cumstances.
Place on the angle nozzle 18 (accessory). Heat
the frozen zone always from the outside to the
middle.
Heat up plastic pipes as well as connections be-
tween pipe pieces especially careful to prevent
damage.
Soft Soldering (see figure G)
For point soldering, place on the reduction noz-
zle 16, for the soldering of pipes/tubing, place on
the reflector nozzle 13 (both accessories).
If solder without flux is used, apply soldering
grease or paste to the location to be soldered.
Warm the location to be soldered for
50 – 120 seconds depending on the material.
Apply the solder. The solder must melt from the
workpiece temperature. After the soldered loca-
tion has cooled, remove the flux.
Bosch Power Tools

Maintenance and Service

Maintenance and Cleaning

Before any work on the machine itself, pull
the mains plug.
For safe and proper working, always keep
the machine and ventilation slots clean.
Cleaning the Coarse-debris Filter
Pull the cover with coarse-debris filter 2 toward
the rear out of the housing. Blow out the filter (e.g.
with compressed-air) or clean it with a soft brush.
Reattach the cover with coarse-debris filter.
WARNING! Important instructions for connect-
ing a new 3-pin plug to the 2-wire cable.
The wires in the cable are coloured according to
the following code:
Do not connect the blue or brown wire to the
earth terminal of the plug.
Important: If for any reason the moulded plug is
removed from the cable of this power tool, it
must be disposed of safely.
If the machine should fail despite the care taken
in manufacturing and testing procedures, repair
should be carried out by an after-sales service
centre for Bosch power tools.
In all correspondence and spare parts order,
please always include the 10-digit article number
given on the type plate of the machine.
English | 19
1 609 929 L85 | (23.1.08)