Wexxar WF30T, Operation And Service Manual

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WF30T Case Former Troubleshooting & Repairs
10-111
10.8.5 Solenoid Valve Repairs
The valves are designed for easy replacement.
1) Lock the air
OFF
at the manual shutoff valve upstream of the filter/regulator unit. Adhere
to the lockout/tagout procedure in
Section 1: ‘Safety’
.
2) Lock
OFF
the electrical power.
3) Remove the two screws that secure the valve body to the manifold block.
4) Replace the complete valve/solenoid assembly, taking care to properly install the gasket
to prevent leakage.
Overhaul of valve/solenoid assemblies can be undertaken, but this must be carried out in a clean
area. Clean the solenoid air pilot actuated assembly with clean mineral spirits if necessary.
10.8.6 Conveyor Drivebelt Repairs
To change the drivebelts,
1) Remove cap from idler pulley end.
2) Slacken the belt-tensioning nuts to the fully
BACK
position. This will permit belt removal
by starting at the idle pulley end, and lifting the belt off upwards and back.
3) Replace with a new belt.
4) Make marks 25" apart on the belt before any load is applied.
5) Tension the belt by tightening the tensioning screws equally to achieve a measurement of
25¼" between the marks (1 percent stretch).
6) Run the belts to ensure correct tracking. If necessary, tighten the tensioning screw on
the side that the belt moves towards.
10.8.7 Drivebelt Bearings Repairs
All drivebelts run on sealed ball bearings, which are lubricated for life. Should bearing failure
occur, the entire bearing and housing should be replaced.
10.8.8 Gearmotor Repairs
Should failure of these components occur, replacement is recommended. The gearmotor shaft
‘plugs into’ the drive pulley that is mounted to the conveyor bottom plate. Refer to the assembly
drawing in the Supplementary Manual for more information and part numbers.