User's Manual

26
Model 428Operating Procedures
080313
Disassembly
BE SURE THE POWER SWITCH IS IN
THE OFF POSITION. Failure to follow this
instruction may result in severe personal injury from
hazardous moving parts.
Step 1
Remove the torque arm, handscrews, 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 the sink for cleaning.
Step 3
Remove the rear drip 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 lubricated.
Brush Cleaning
Step 1
Prepare a sink of cleaning/sanitizing solution with an
active chlorine concentrate of 100 - 200 PPM (parts
per million). USE WARM WATER AND FOLLOW
THE MANUFACTURER’S SPECIFICATIONS.
Make sure all brushes provided with the freezer are
available for brush cleaning.
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 bearing 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). Remove 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 easily.
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 exterior surfaces of the freezer.