Grindmaster 3312 User Manual page 11

Disassembly and Cleaning (cont.)
8. Remove drip tray and empty contents.
9. Take all components to the cleaning area.
10. Prepare 1 gallon solution of hot tap water and a good grade of dishwashing detergent.
11. Thoroughly wash all components in a warm, mild detergent solution including the
inside of the freezing cylinder and the mix storage hopper. DO NOT WASH
COMPONENTS IN A DISHWASHER.
12. Use a medium sized brush to clean the bottom of the valve body and the inside of
the plunger bore with detergent solution taking care to remove only remaining
lubricant. (Figure T)
13. The exterior of the freezer should be cleaned as needed with a cloth towel.
Coarse rags, abrasive cleaners and excessive force can damage and/or scratch the surfaces of the freezer.
Reassembly
NOTE: Allow all parts to dry completely before reassembly.
1. Reassemble drip tray and re-install on front of unit.
2. Wet the inner rubber lip of the rotary half of the seal and the back end of the dasher
shaft with water. Slide rotary half of assembly onto the dasher shaft, RUBBER FIRST,
with the smooth sealing surface facing the back of the dasher. (See Figure U).
Be sure the rotary half is fully seated against the shoulder of the shaft.
3. Insert the stationary half of the seal into the ribbed rubber boot with the
polished surface facing out (forward).
4. Lightly lubricate the ribbed rubber boot of the stationary ceramic seal (taking care
not to get any lubricant on the polished surface) and insert it straight back into the
recess at the back of the freezing cylinder, RUBBER FIRST. (See Figure V)
NOTE: The stationary half of the seal must be completely dry before reassembling. If the
circular half of the seal is white, make sure that the grooved side is toward the rubber. If the
circular half is black, be sure the glossy side is facing out.
5. Reassemble the dasher assembly, as shown in Figure W. Insert the larger front
and smaller rear white plastic bearings into dasher, then slip in the stator rod.
6. Carefully and slowly guide the dasher into the freezing cylinder, taking care
not to damage the seal assembly. Turn dasher shaft until
it engages the square drive coupling. Slide the dasher
back into the cylinder so that the two smooth sealing
surfaces meet. (See Figure X)
7. Inspect and lightly lubricate the large square o-ring
and refit it into the back of the valve block assembly.
Install the valve assembly on the front studs and tighten
the knobs until they are finger tight. Do not use tools to
tighten knobs.
NOTE: Failure to lightly lubricate the large o-ring can result in product leakage.
8. Copy reassembly steps on other side.
Model 3312
CAUTION
Figure T Clean Valve Body
Figure U Re-assemble rotary
half of seal as shown
Figure V Installing the
stationary half seal
Figure W Dasher Assembly
Figure X Seal Assembly
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