Chapter 7
Maintenance and Repair Notes
Page 118 DM55 DynaDrum PP V6, Manual No.21-18, Rev.2.19
7.5 Draining of Supply Air Filter/ Regulator
Drain water accumulation from the bowl of the air filter/ regulator monthly (or as needed).
The filter/ air regulator is located on the outside, back of the control panel box assembly.
1. Locate the quarter-turn valve underneath the filter/ regulator.
2. Empty the contents of the bowl.
7.6 Clamshell Adjustments
Adjustments to the standard and (optional)
full clamshells are performed similarly.
Tightness
• The clamshell’s “grip” on the drum may
be loosened or tightened by adjusting
the U-bolt latches on each of the
clamps equally.
• Loosen the U-bolt’s two screws.
• To loosen the fit of the clamp to the
drum, extend the U-bolt. To tighten the
fit, retract the U-bolt.
Alignment
• A properly set-up Bulk Melter will align automatically, left to right, due to the hanging
nature of the clamshell assembly in conjunction with the slots in the attaching links.
• Forward or rearward adjustment can be made by equally adjusting the four threaded
assemblies at each corner of the clamshell.
• Clockwise rotation will bring the clamshell forward. Counter-clockwise rotation will
move the clamshell rearward. Adjustments must be equal on all four assemblies.
7.7 Special Maintenance for PUR Applications
1. Never leave the platen exposed to the atmosphere any longer than necessary for a
drum change. Doing so could cause cross-linking (curing of the adhesive).
2. Never introduce PUR adhesives into an ITW Dynatec Bulk Melter that is not outfitted
with appropriate optional equipment.
3. Never melt PUR adhesives without a proper ventilation system.
4. If the Bulk Melter must be taken out of service, purge the unit with appropriate purging
material.
5. Periodically perform the following purge procedure:
Note: this procedure is not required for units equipped with the optional pneumatic
pressure relief.
a. Lower the relief valve’s setting by backing out its adjustment screw to its lowest
setting.
b. Slowly pump purge material through the valve and back to the pump inlet. The
operator should monitor the pressure closely and stop the unit immediately if the
pressure spikes (possibly indicating the presence of congealed or cured material).
c. After purging the unit completely, return the relief valve to its “run” setting and shut
down.
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