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SB-21-043-D
Page 3
SERVICE CHECKS
I
Condition
Cause
I
Correction
I
Air escaping from port on regulator cap.
Broken or damaged diaphragm.
Replace diaphragm.
i Pressure creepage registered on gauge.
'
Dirty or worn valve seat in regulator.
Clean or replace valve seat.
Material tends to settle out rapidly.
Not enough agitation of material.
Increase
agitaf1on.
Air bubbles form in material.
Material being over-agitated.
Slow down agitator speed.
Optional QMS-79 propeller (see
Accesso-
ries) can be used to reduce the amount of
'
agitation.
l
'
Air leakage at agitator seal assembly.
Defective seal assembly (49).
Replace (49).
'
Paint getting into bearing assembly of agi-
!
Paint level in tank too high.
Fill tank 2-3" below rim.
tator.
Paint being
over~agitated.
Slow down agitator speed.
Defective seal assembly (49).
I
Replace (49).
Fluid or air leak at lid gasket.
Defective lid gasket
Replace.
I
I
Thumb screws not tight.
Tighten.
Air motor siezed.
I
A.
IT
agitator shaft does not turn by hand.
I
Damaged seal assembly !49).
Replace (49).
I
B.
If agitator shaft turns freely, check
I
Vanes (43) blackened/chipped at outer
I
Replace with Repair Kit KK-5001-1 and
air motor.
edges due to lack of oil.
refer to air motor agitator lubrication in-1
structions.
!
Note: Occasionally check gauge (10). The needle should return to zero with no pressure on the gauge.
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