OPERATING PROCEDURES
6-15
Models 8752, 8756, and 8757
Operating Procedures
6
2. Remove the air/mix pump. Unscrew the flare line
from the mix inlet tube. Disengage the pressure line
from the pressure switch and the mix inlet tube. Pull
the retaining pin out of the pump collar and slide the
collar down. Tilt the air/mix pump away from the
machine and take the entire assembly to the sink for
further disassembly and brush-cleaning.
3. Remove the pressure switch cap from the mix
cabinet. Remove the diaphragm from the cap.
Repeat steps 2 and 3
for the other side of the
machine on Models 8756 and 8757.
4. Remove the front drip tray and splash shield.
Brush-Cleaning
1. Prepare a sink with an approved cleaning solution
(examples: Kay-5
®
or Stera Sheen
®
). Use warm
water and follow the manufacturer’s specifications.
If an approved cleaner other than Kay-5
®
or
Stera- Sheen
®
is used, dilute it according to the label
instructions.
Important!
Follow the label directions. Too
strong
of a solution can cause parts damage, while too
mild
of a solution will not provide adequate cleaning.
Make sure all brushes provided with the machine are
available for brush-cleaning.
2. Remove the seal(s) from the driveshaft(s).
3. From the freezer door(s), remove the gasket(s), front
bearing(s), pivot pin(s), draw handle(s), draw
valve(s), prime plug(s), and design cap(s).
4. Remove all O-rings.
Note:
To remove O-rings, use a single-service towel
to grasp the O-ring. Apply pressure upwards until the
O-ring pops out of its groove. With the other hand,
push the top of the O-ring forward. It will roll out of the
groove and can be easily removed. If there is more
than one O-ring to be removed, always remove the
rear O-ring first. This will allow the O-ring to slide
over the forward rings without falling into the open
grooves.
5. Remove the flare line(s), suction line(s), retaining
pin(s), and mix inlet fitting(s) from the pump
cylinder(s). Remove the liquid valve body(ies) from
the pump cylinder(s).
Remove the piston(s) from the pump cylinder(s).
Remove all O-rings and check bands.
6. Return to the freezer with a small amount of cleaning
solution. With the black bristle brush, brush-clean the
rear-shell bearing(s) at the back of the freezing
cylinder(s).
Figure 6-53
7. Using the long, flexible brush and the cleaning
solution, clean the mix inlet tube(s) located in the mix
cabinet. Thoroughly clean the tube(s) all the way up
to the freezing cylinder. This area needs special
attention because bacteria and milkstone can build
up here.
8. Remove the rear drip pan from the side panel and
take it to the sink for cleaning.
Note:
If the rear drip pan is filled with an excessive
amount of mix, go to the Troubleshooting Guide.
9. Thoroughly brush-clean all disassembled parts in the
cleaning solution, making sure all lubricant and mix
film is removed. Take particular care to brush-clean
the draw valve core(s) in the freezer door. Place all
the cleaned parts on a clean, dry surface to air-dry
overnight.
10. Wipe clean all exterior surfaces of the freezer and the
mix cabinet.
10171
Summary of Contents for 8757
Page 14: ...3 4 SAFETY Models 8752 8756 and 8757 Safety 3 Notes...
Page 28: ...5 4 USER INTERFACE Models 8752 8756 and 8757 User Interface 5 Notes...
Page 52: ...9 2 PARTS REPLACEMENT SCHEDULE Models 8752 8756 and 8757 Parts Replacement Schedule 9 Notes...
Page 58: ...11 4 LIMITED WARRANTY ON PARTS 8752 8756 and 8757 Limited Warranty on Parts 11 Notes...
