Hyd-Mech VW18, Инструкция по безопасности и эксплуатации, Страница: 70 / 80

3.12
PROBLEM PROBABLE CAUSE SOLUTION
ELECTRICAL PROBLEMS
1 Saw will not start at all. 1.1 Emergency Stop push button not reset. 1.1 Rotate through 45º to pull out E-stop
push button.
1.2 Safety interlock switches not closed. 1.2 Check that both wheel door latches are
closed.
1.3 Insufficient blade tension. 1.3 Check that blade is not broken or off the
blade wheels.
Change or re-mount blade.
1.31 Adjust blade tension. See 6.3 below.
1.4 Main disconnect switch turned off (0) 1.4 Turn switch on (1)
Observe all Lock-out procedures.
1.5 Power fuse(s) F7 - F9 blown 1.5 Check and replace as required
2 Hydraulic pump motor starts, but
hydraulic functions do not respond.
No pressure on gauge.
2.1 Wrong phase order from electrical
supply.
(blade will run counter-clockwise)
2.1 Stop immediately.
Reverse any two phase connections -
qualified personnel only
2.2 Inadequate oil in hydraulic tank. 2.2 Check level gauge, add oil to upper line.
2.3 Pump malfunction or other cause. 2.3 Contact dealer.
3 Hydraulic pump motor starts, but
hydraulic function does not respond
to electrical push button.
Pressure on gauge.
3.1 If LED on cord connector at valve
solenoid lights, but no function:
Solenoid failure or valve stuck.
3.1 Interchange coils with other valve.
If fault follows coil, replace coil.
If fault stays with valve, replace valve.
3.2 If LED on any of the cord connectors
does not light, but corresponding
LED'S at the MEP 32 output lights:
No 24Vac power at outputs.
3.2 Use meter to check voltage from
24Vac terminal (-x-J13) on MEP 32
PCB to 0Vac terminal. If 24Vac is not
present, check fuse F14 & if required
replace.
3.3 If LED on cord connector does not
light, but corresponding LED at the
MEP 32 output lights:
Possible PCB failure.
3.3 Contact dealer / service department.
4 Hydraulics are active, but blade will not
start.
4.1 Check Blade Change Mode selector
switch
4.1 Switch is to be in the OFF position.
4.2 Overload of variable frequency drive 4.2 Remove the cause of the overload and
then RESET. See 5.2.
4.3 LEFT / RIGHT vise is open. 4.3 Close LEFT / RIGHT vise
5 Head will not swing 5.1 Vise or vises on material. 5.1 Open appropriate vise.
5.2 Servomotor driver overload. 5.2 Remove the cause of the overload and
then RESET by turing the Disconnect
switch 'OFF' Wait 60 seconds
before turning switch to 'ON'
6 Saw is cutting out-of-square vertically. 6.1 Excessive feed force. 6.1 Check settings against Saw Cutting
Parameter Chart.
Reduce Feed Rate setting.
6.2 Blade is dull or damaged. 6.2 Replace blade.
6.3 Low blade tension. 6.3 Check blade tension display -
adjust tension to between
1320 lbs (600kg) - 2650 lbs (1202kg).
6.4 Too low feed force when cutting
materials that work harden (stainless
steels, nickel alloys)
6.4 Increase feed force setting.
Check that feed rate display does not drop
below 0.20 in/min.
6.5 Stock misalignment. 6.5 Check that stock rests evenly on conveyor
rollers.
CUTTING PROBLEMS
TROUBLESHOOTING THE VW-18 PT
Shaded actions to be performed
only by qualified service personnel.