Hyd-Mech V-25APC - TROUBLE SHOOTING GUIDE

3.12
TROUBLE SHOOTING GUIDE
Most problems which may occur have one of the relatively simple solutions which appear in this section. If the solution is
not found here, contact the Hyd-Mech Distributor from whom you purchased your bandsaw. They have trained eld serv-
ice personnel who will be able to rectify the problem.
NOTES: 1) IF THE BLADE IS RUNNING CLOCKWISE OR THE HYDRAULIC PUMP IS NOISY
SHUT THE SAW DOWN IMMEDIATELY!
2) THE HEAD SHOULD BE SWUNG FULLY TO THE LEFT OR RIGHT BEFORE ANY HYDRAULIC
SERVICE IS PERFORMED TO PREVENT THE HEAD FROM MOVING UNEXPECTEDLY.
CONTROL PROBLEMS
PROBLEMS CAUSE SOLUTION
1 Saw hydraulics will not start
1.1
Head and vise selector switches not
in centre positions.
1.1 Place switches in centre position.
1.2
Side covers or drive wheel door are
not closed.
1.2 Close covers and door.
1.3 Broken or dismounted blade. 1.3
Replace or remount blade using
blade change mode.
1.4
Hydraulic motor overload has
tripped.
1.4
Qualied technician - reset overload
relay.
1.5 Control circuit fuse has blown. 1.5 Qualied technician- replace fuse.
2
Hydraulic pump runs but no
hydraulic functions available.
2.1
Check system pressure gauge. No
pressure indicates wrong phase
order.
2.1
Shut down immediately. Qualied
technician reverse any two phase
connections.
2.2 Blade change mode selected. 2.2 Switch off blade change mode.
2.3
Pump runs noisily - check hydraulic
oil level at tank gauge.
2.3
Stop immediately. Add correct
grade of hydraulic oil to level mark
on tank.
2.4 Pump/motor coupling backed off. 2.4
Qualied technician - re-adjust
coupling spacing.
3
An individual function does not
respond to manual control.
3.1
If pilot light on corresponding valve
does not light, then electrical fault is
indicated.
3.1
Qualied technician - use schematic
to nd fault.
3.2
If pilot light responds, then valve coil
may be bad.
3.2
Test by interchanging coil from
another valve.
3.3
If pilot light responds and coil is
good, then valve may contain dirt.
3.3
Qualied technician - remove,
disassemble and clean valve spool.
4
Hydraulics function but blade will
not start.
4.1 Vise switches not set correctly. 4.1
At least one vise must be closed.
The other must be closed or open,
but not in neutral.
5 Head will not advance. 5.1 Blade motor not started. 5.1
Start blade motor, or use Head
Back Limit Override button to permit
advance with blade stopped.
6 Head will not swing. 6.1
Head not back, or guide arm not
fully up.
6.1
Retract head to limit switch and fully
raise guide arm.
NOTE: All solutions referring to a qualied technician require that your organizations safety lock-out provision be followed.
Other solutions may require lock-out depending upon circumstances.