Maintenance; Lubrication; Cleaning The Ram Plate; Cleaning The Pump Lower - Graco SaniForce STU Operation

Maintenance

Maintenance Maintenance

Lubrication

Lubrication Lubrication
The pump is lubricated at the factory. It is
designed to require no further lubrication for
the life of the packings. There is no need to
add an inline lubricator under normal operating
conditions.
Cleaning the the Ram Ram Plate
Cleaning Cleaning the Ram
To avoid injury, always set manual safety latch
to Engage position when working under the
ram plate.
When done using the tote unloader system for
the day, or when cleaning is needed so that a
different product can be pumped, perform the
following:
1. Raise the ram plate fully.
2. Engage the safety latch. See
Engaging the Safety Latch, page
3. On the control panel, make sure the pump is
turned off (middle position). If a downstream
valve or dispenser is used, verify that it
is open and pressure is relieved from the
pump.
4. Remove the tote.
5. Remove the seal retainer plate (CC),
inflatable seal (1-N), and corner seals (1-P)
from the ram plate.
6. Remove the blowoff assembly (BB) and clean
with a compatible cleaning fluid.
7. Clean the seals and ram plate with a
compatible cleaning fluid.
8. Install the inflatable seal, corner seals, and
seal retainer plate on the ram plate.
9. Install the blowoff assembly on the ram
plate.
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Plate
Plate
16.
Cleaning the the Pump Pump Lower
Cleaning Cleaning the Pump
NOTE: NOTE: If the installed pumps are double NOTE:
diaphragm, this procedure does not apply.
Refer to your pump manual for disassembly and
cleaning.
When done using the STU for the day, or when
cleaning is needed so that a different product
can be pumped, perform the following:
1. Remove the tote.
Change the Tote, page
2. Perform Pressure Relief Procedure, page
3. Lower the ram so that the ram plate is at its
lowest point.
4. If desired, flush the pump.
5. Refer to the pump manual for instructions
on how to disconnect the air motor from the
pump lower.
6. Remove the piping attached to the pump
outlet to connection fitting (1-F) for
cleaning.
7. Remove the clamp at the large flange
connection where the ram plate attaches to
the pump lower.
8. Lift the pump, or pump lower out of the ram
plate for cleaning.
9. If more than flushing of the pump is
necessary, follow the steps in the pump
manual for cleaning the pump lower unit.
10. Clean the ram plate.
Cleaning the Ram Plate, page
11. Once all ram plate and pump lower parts
have been cleaned, install the seal on the
ram plate, pump lowers, and air motors.
Attach all air fittings and flange clamps.
Maintenance
Lower
Lower
See
29.
25.
See
31.
31