26
Model 428Operating Procedures
080313
Disassembly
BE SURE THE POWER SWITCH IS IN
THE OFF POSITION. Failure t o follow this
instruction may result in severe personal injury from
hazardous moving par ts.
Step 1
Remove the torque arm, hands crews, freezer door,
torque rotor, beater assembly, scraper blades and
drive shaft from the freezing cylinder. Take these
parts to the sink for cleaning.
Step 2
Remove the front drip tray and the splash shield.
Take these parts to t he sink for c leaning.
Step 3
Remove the rear dr ip pan from the front panel. Note:
If the drip pan is filled with an excessive amount of
mix, it is an indication the drive shaft seal should be
replaced or properly lubr icated.
Brush Cleaning
Step 1
Prepare a sink of cleaning/sanitizing solution with an
active c hlorine concentrate of 100 - 200 PPM ( parts
per million). USE WARM WATER AND FOLLOW
THE MANUFACTURER’S SPECIFICATIONS.
Make sure all brushes pr ovided with the freezer are
available for brush c leaning.
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.
Step 2
Remove the o-ring and seal from the drive shaft.
Remove the o-ring and the bear ing from the torque
rotor.
Step 3
From the freezer door, remove the draw valve, ice
buster, front bearing, and gasket. Remove the prime
plug (self- closing door, only). R emove all o-rings.
Note: To remove the o-ring, use a single service towel
to grasp the o-ring, and apply pressure in an upward
direction until the o-ring pops out of its groove. With the
other hand, push the top of the o-ring forward until it
rolls out of the groove and can be removed eas ily.
Step 4
Thoroughly brush clean all disassembled parts in the
cleaning solution, making sure all lubricant and mix film
is removed. Place all the cleaned parts on a clean, dry
surfacetoairdry.
Step 5
Return to the freezer with a small amount of cleaning
solution. Brush-clean the rear shell bearing at the back
of the freezing cylinder with the black bristle brush.
Figure 46
Step 6
Wipe clean all e xterior surfaces of the freezer .
