ITW Dynatec DYNAMINI, Руководство по эксплуатации и обслуживанию

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ITW Dynatec c. 2004
DYNAMINI ASU Manual #20-25
Page 8-5
Revised 1/05
To Access the Pump or Motor
(See illustrations on page 10-9 or 8-1)
Remove the pump and electronics cover.
a.
Piston Pump Removal:
1. Turn OFF air pressure, then disconnect the
air line from the solenoid valve mounted on
the top of the airmotor.
2. Disconnect the two wires that run from the
solenoid to the circuit board.
3. Loosen set screw to drain excess glue from
filter manifold.
4. Remove the two socket head cap screws that
connect the filter manifold to the pump adapt-
er.
5. Remove the three screws that hold the pump
to the pump adapter.
6. Remove the pump/ airmotor assembly from
the end of the unit.
7.
To re-assemble: Replace three o-rings be-
tween pump & pump adapter and filter man-
ifold and pump adapter. Tighten the three
pump adapter screws to the pump. Torque
should be approximately 22.6 Nm (200 in/lb)
at room temperature. With pump and hopper at
177
°
C (350
°
F), the maximum allowable torque
on pump assembly screws is 44 Nm (32.4 ft/
lb). A Piston Pump Rebuild Kit is available.
Disconnect air-
line from sole-
noid at the quick
disconnect fitting
Remove screws
to release piston
pump from
adapter.
Remove two screws to
release filter manifold.
Filter manifold
O-rings
Piston Pump
Loosen
set screw.
Permanent
retaining
screw.
Adhesive drains from below manifold.
PUMP DISASSEMBLY WARNINGS
HOT SURFACE
If the pump is not operable but the heating system will function, raise the
temperature of the application system to the operating temperature to aid in the
pump disassembly process. Otherwise, a controlled heating method is
recommended to melt hardened hot melt adhesive. Never use a torch or an open
flame on any of the components of the application system.
HIGH VOLTAGE
Once the system is up to temperature, disconnect and lockout all incoming
power before proceeding.
HIGH PRESSURE
BEFORE PERFORMING ANY PUMP REPAIR, YOU MUST PURGE ALL ADHESIVE
AND PRESSURE FROM THE DYNAMINI SYSTEM. Position a heat-resistant
container under the filter manifold’s purge drain. Carefully loosen the purge
screw located in the port of the outlet filter manifold and allow adhesive and
pressure to escape. See page 6-2 for detailed instructions.