Chain Tensioning - GBC PRO-TECH DS-60 Operation And Maintenance Manual

Maintenance and Troubleshooting
4. Adjust the nip so that there is an even line of light
across the width of the rolls.
5. Secure the jam nut on the lift assembly bolt.
Properly Set Nip
(Distance Between
Rolls is Equal)
Figure 4-4: Properly Set Nip
6. Replace both cabinet covers.
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Smaller chain tensioning adjustments on the DS-60
Heat Press are handled by a secondary chain tensioner,
however, when installing a new chain or when the
chain tension is more seriously out of adjustment, use
the following procedure to adjust the chain tension.
Tools required:
1
• / " hex wrench
8
3
• / " hex wrench
16
• Screwdriver
To adjust the chain tension:
Remove power from the heat press and make
sure it won't be reapplied while you are
performing this procedure. You could be severely
shocked, electrocuted, or get your fingers caught
in the drive mechanisms.
1. Remove the drive side cabinet cover using the
hex wrench by removing the six screws holding the
cover in place.
4-4
WARNING
DS-60 Operation and Maintenance Manual
2. Loosen the secondary chain tensioner on the sec-
ondary drive chain. The tensioner should, at this
point, not be engaging its respective chain.
3. Loosen all four motor mount bolts using the
hex wrench as shown in the figure below. The
motor should just move freely within the slots.
1/4" to
1/2" Play
Secondary
Chain
Tensioner
Figure 4-5: Adjusting the Chain Tension
4. Using a screwdriver, apply a small amount of
downward pressure on the motor by prying against
the inside of the side frame until there is ¼" to ½"
play in the chain.
5. Tighten the mounting bolts while maintaining the
downward pressure on the motor.
6. Engage the secondary chain tensioner and apply
pressure until its chain exhibits similar tension to
the primary chain tension.
7. Replace the cabinet cover and reapply power to the
heat press.
1
/ "
8
Downward
Force Tightens
Chain
Loosen
Motor
Mount
Bolts
© GBC Pro-Tech 1998 January
3
/ "
16