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Servicing Pump Module from 20 Liter
(5 gallon) Supply Unit
This section describes how to:
D remove a pump module from a 20 liter (5 gallon)
supply unit
D separate the pump module from the air motor
(including disassembling the pump module)
D replace a pump module in a 20 liter (5 gallon)
supply unit
Removing Pump Module from 20 liter (5 gallon)
Supply Unit
To remove the pump assembly from the ram, follow
this procedure:
1. Remove the material pail from the supply unit:
WARNING
The material and equipment will be
hot! To reduce risk of injury, wear eye
protection, gloves and protective clothing
when installing, operating, or servicing
this dispensing system.
a. Raise the ram out of the pail using the ram
hand valve. At the same time, carefully equal-
ize the pressure in the pail by cycling the
follower blow-off valve open and closed.
b. With the follower completely out of the pail,
remove the pail.
c. Being careful not to damage the follower wiper,
wipe any material build-up from the follower
plate and wiper.
d. Move the ram hand valve to the OFF position.
Service
2. Make sure the ram hand valve is in the OFF
position.
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 11.
3. Relieve the supply unit pressure.
To reduce the risk of serious injury whenever you
are instructed to relieve ram pressure, always
follow the Ram Pressure Relief Procedure in the
supply unit or system documentation.
4. Relieve the ram air pressure.
5. Turn the system CONTROL ON switch (located on
the supply unit's electrical control panel) to OFF.
6. Turn OFF the main electrical disconnect.
7. Turn off the electrical power to the supply unit.
Follow all applicable safety procedures and lockout
rules.
8. Bleed off pressure in the system and excess
material by opening the dispense gun and catching
the material in a waste container.
9. Disconnect all material hoses.
WARNING
WARNING
WARNING
ELECTROCUTION HAZARD
To reduce risk of injury or damage to
equipment, make sure the main discon-
nect is OFF before continuing with this
procedure.
310530
17
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