Milnor PulseFlow 76028 G3, Installation And Service

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This document covers two major areas of drive train service: drive chain adjustment and support
roller replacement.
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Each section is equipped with roller chains which operate outside the wet area of the machine. If
properly maintained, chains will have a long life in continuous use. Check chains periodically for
proper chain tension and lubrication as called for in the preventive maintenance checklist.
As the tunnel reverses, one half of the chain tightens, while the other half goes slack. A pair of
chain tensioners are fitted to each chain to keep slack at a minimum during reversals (Figure 2).
All chain measurements are taken from the slack side. An Oiler and Drive Test Panel (Figure 1,
located on the electric box door under the load chute), is provided with a switch that allows
manual actuation of the drive motors, so slack can be measured at each tensioner in turn.
The key switch on this panel allows the chain oiler to be checked and adjusted. See “ABOUT
THE OIL MIST SYSTEM...MSSMD401BE” in the Table of Contents for additional information.
=^cT ) All chains must have the same amount of tension. If a chain is tighter than an adjacent chain, it
will drive the adjacent cylinder and could lead to premature failure of chains, support rollers, or gear
reducers.
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F0A=8=6 ) 2adbW P]S 4]caP_ 7PiPaSb—Guards, covers, and panels—Operating the
machine with any guard, cover, or panel removed exposes moving components.
• Lock out and tag out power at the main machine disconnect before reaching into the
cylinder.
Figure 1: Manual Chain Controls
Oiler and Drive Test Panel Symbol Key Legend
1. Key switch
2. Jog switch
3. Automatic operation
4. Test position
5. Clockwise rotation
6. Counterclockwise rotation
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—Follow instructions carefully to prevent the tunnel
washer from starting while testing or adjusting chain tension. At the Mentor
™
console, provide
power to the drive test system by turning console power ON and tunnel power ON. Do not start
rotation.
1. At the Oiler and Drive Test Panel, disable Mentor control of the drive motors and prevent
inadvertent manual drive motor actuation as follows:
2. Turn key switch to the position. This disables the drive motor contactors, preventing
personnel from starting the machine from the Mentor
™
console during testing or adjustment.
3. Turn the rotation switch momentarily to the position.
4. Lock out and tag out power at the wall disconnect.
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