17
Model 490
Operating Procedures
Step 4
Remove the draw valve from the freezer door.
Remove the two o-rings from the draw valve.
Note:
To remove o-rings, use a single service towel
to grasp the o-ring. 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,
and 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 o-rings
without falling into the open grooves.
Step 5
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 in the freezer door. Place all the
cleaned parts on a clean dry surface to air dry
overnight.
Step 6
Return to the freezer with a small amount of
cleaning solution. With the black bristle brush, brush
clean the rear shell bearing at the back of the
freezing cylinder.
Figure 22
Step 7
Using single service towels, wipe clean all exterior
surfaces of the freezer.
