H.C Duke & Son 959R Operator’s Manual With Illustrated Parts List page 43

Twin twist soft serve freezer
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11 Routine Maintenance
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QUARTERLY
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1. Have a refrigeration technician check the
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refrigeration system and make the necessary
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adjustments.
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SEMIANNUALLY
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1.
Gear Reducer
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Have the oil in the gear reducer changed
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by your service technician.
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NOTE: Under normal conditions the oil
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should be changed after 2500 hours of
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operation or every six months, whichever
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occurs first.
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184981
DUKE Model 959R Soft Serve Freezer
– continued
ANNUALLY
CAUTION
To avoid electrical shock or
contact with moving parts, make
sure all switches are in the "OFF"
position and that the main power supply
is disconnected. Some freezers have
more than one disconnect switch.
1. Call your service technician to replace
drive belts.
2. Call your service technician to clean
the inside of the freezer including
base, side panels, condenser, etc.
3. Call your service technician to check
water-cooled condensers and flush
clean to remove scale and deposits if
necessary.
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