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TROUBLE SHOOTING
(SEAL PLATE PROBLEMS AND LEAKING)
Note:
Running the coater with the seal plates tight, without adhesive or cleanup or
coating material to lubricate the seal plates, can damage the rubber on the end of the
rolls (SEE CHART BELOW).
TROUBLE SHOOTING SEAL PLATE PROBLEMS AND LEAKING
Problem
Possible Cause
Corrective Action
Seal plate adjustment
1. The correct tension is to
hand tighten the nut or
thumb screw and if
needed one or two extra
turns to apply more spring
tension to the seal plate.
1. Seal plates leaking coating
material.
1. The seal plate spring
tension may be too loose.
2. You will need to check
that the coating roll ends
are flush with the doctor
rolls, as far as left to right.
3. Check if the seal plates
are grooved deeply or
damaged and have been
leaking, you will need to
replace the seal plates at
this time.
4. Check for damage on the
rubber on the end of the
roll.
5. Check that the doctor roll
is level with the coating
roll.
1. Tighten the nut or
thumbscrew to apply more
spring tension.
2. Loosen the setscrews in
the coating or doctor roll
bearings and move the roll
that has shifted to the left
or right; retighten the set
screws.
3. Replace the seal plates.
4. Replace the coating
roll.
5. There are adjustments on
the doctor roll bearing gibs.
