ITW Dynatec c. 2004
DYNAMINI ASU Manual #20-25
Page 7-15
Revised 1/05
Problem
Possible Cause
5. The adjustable pressure
relief valve is opening.
Adhesive leak at pump
1. Pump seal is incorrectly
shaft seal.
positioned inside the seal
and bearing assembly.
2. Pump seal inoperative.
Adhesive leak at pump- 1. O-ring in pump’s rear
to-hopper interface.
plate is inoperative.
2. Pump assembly screws
are missing or loose.
3. Helicoil insert pulled out
of hopper or pump
interface plate.
Solution
5. When fully closed (clockwise) and
all applicators are off, adhesive
pressure should be around 68 bar
(1000 psi). If it is significantly less,
the pressure relief valve should be
replaced.
1. Remove seal and bearing from pump.
Verify that all components are
correctly positioned.
2. Remove seal from pump, inspect it
and replace it if worn or damaged.
Be sure there are no burrs or other
sharp edges on pump shaft or on
installation tools that could damage
a new seal.
1. Remove seal from pump, inspect it
and replace it if worn or damaged.
Be sure there are no burrs or other
sharp edges in the o-ring groove or on
installation tools that could damage
a new seal.
2. Verify that all four pump screws are
tightly assembled to the pump
mounting block.
3. Remove pump and inspect bottom
of hopper. Repair or replace hopper or
pump mounting block as necessary.
Pressure
relief valve
Seal assembly
Rear Plate
o-ring
Pump
Содержание DYNAMINI
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