Grindmaster 3352 Beverage Dispenser User Manual


 
Crathco
®
Remote Beverage Freezers Page 9
Disassembly and Cleaning (cont.)
5. Slide the rotary half of the seal off the dasher shaft. Inspect both seal components
carefully for nicks or cracks. Replace seal if defective.
NOTE: To prevent leakage, the surfaces of the rotary seal and stationary seal must be
smooth with no chips or cracks.
NOTE: All units are shipped with a standard ceramic seal (#W0340201) unless otherwise
specified. Certain products contain a coconut oil with requires a different sealing material.
For these products use the coconut oil seal (#W0340210). The stationary half of the
standard seal has a white polished surface. The stationary half of the coconut oil seal
has a glossy black surface.
6. Remove carb tube from bottom of hopper and remove o-rings. (see Figure P).
7. Remove drip tray and empty contents.
8. Take all components to the cleaning area.
9. Prepare 1 gallon solution of hot tap water and a good grade of dishwashing detergent.
10. Thoroughly wash all components in a warm, mild detergent solution, including
the inside of the freezing cylinder and mix storage hopper. DO NOT WASH
COMPONENTS IN A DISHWASHER.
11. 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 all remaining
lubricant (figure Q).
12. The exterior of the freezer should be cleaned as needed with a cloth towel.
CAUTION: Coarse rages, 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 install.
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 toward the back of the dasher. (see Figure R).
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. (Figure S)
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 T. 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 U)
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. Use a cross tightening pattern. Do not use tools
to tighten knobs.
NOTE: Failure to lightly lubricate the large o-ring before installing into the valve block
can result in product leakage.
Figure Q Clean Valve Body
Figure P Carb Tube
Figure R Re-assemble rotary
portion of seal as shown
Figure S Installing the
stationary portion seal
Figure T Seal Assembly
installed correctly
Figure U Dasher Assembly
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