Owner`s manual

Section 4. Troubleshooting
20
Problem / Symptom Cause Corrective Action
Pump impeller is locked or
broken
• Check pump impeller for
obstruction and clear if
necessary
• Replace pump
Pump is air locked
• Bleed air from impeller
housing by opening the
drain valve on the pump
valve assembly.
• Check all valves to make
sure one is not closed thus
preventing the pump from
priming
Poor pump pressure
Plumbing is obstructed
• Check filters and valves for
obstructions and clear if
necessary
• Check inlet at bottom of
sealant tank for obstruction
and clear if necessary
Surface impressions occur
at the take-up roll
Insufficient drying
• Reduce web speed
• Increase heater panel
temperature
There is a leak at the pump or
inlet plumbing
Check for leaks and correct
them
Sealant tank is low and is
sucking air
Add more sealant to tank
Sealant was frozen before use Remove old sealant and refill
with new
The sealant is foaming
Pump has malfunctioned
• Check for air trapped in the
pump and bleed by
opening the drain valve on
the pump valve assembly
• Replace pump
Sealant in tank develops a
skin over its surface
Sealant has been left without
agitation for too long and has
begun to dry out
Pull skin off the top of the
sealant and add a small
amount of water (1 cup) and
allow the sealant to cycle
through the machine