Operation Manual

2.18
PKF 255 V8
Service plan
Troubleshooting
A
Danger!
Before carrying out any fault service or main-
tenance work always:
- Switch machine OFF.
- Unplug power cable.
- Wait for saw blade to come to standstill.
Check that all safety devices are operational again
after each fault service.
Before switching ON
- Chip ejection
(when operated
without dust collec-
tion) and
- table slot
Visual check if unob-
structed by chips.
Riving knife Visual check if dis-
tance saw blade – riv-
ing knife is 3...8 mm.
Monthly (if used daily)
Clean guide elements
for saw blade setting
- threaded rods for
blade rise and fall;
- swivel segments.
- Remove chips with
vacuum cleaner or
brush;
- apply light coat of
oil to guide ele-
ments.
Check guide elements
of travelling sizing
table:
- bearing surfaces;
- roll bearings.
- Remove chips with
vacuum cleaner or
brush;
- adjust or replace
bearing surface
brushes if neces-
sary.
Power cable Check for damage, if
necessary have
replaced by a qualified
electrician.
Every 300 hours of operation
Main saw blade drive
belt
Check tension (£ 5
mm)
All screwed connec-
tions
Check, retighten if nec-
essary (except saw
blade longitudinal shift
setting screws).
Motor does not run
Undervoltage relay
tripped by power failure.
Switch on again.
No supply voltage. Check cables, plug, out-
let and mains fuse.
Motor overheated, e.g.
by
- a dull saw blade
- too high a feed rate
- sawdust build-up in
housing.
Eliminate cause for
overheating, wait for a
few minutes, then start
saw again.
Reverse rotation of saw blade
(three-phase motor only)
No supply voltage. Interchange phases
(see „Assembly and
connection“
Loss of cutting performance
Saw blade dull (possibly
tempering marks on
blade body).
Replace saw blade (see
section „Maintenance“).
Travelling sizing table not running smoothly
Roll bearings/bearing
surfaces soiled.
Clean, if necessary
adjust or replace bear-
ing surface brushes.