H.C Duke & Son 959R Operator’s Manual With Illustrated Parts List page 34

DUKE Model 959R Soft Serve Freezer
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8.2 Priming
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1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
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1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
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1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
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1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
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– continued
4. Open the spigots and air bleed plugs.
5. Turn the pump switches to "ON" and
allow the mix to push the remaining
sanitizer from the tubing and freezer .
6. Close the spigots when pure mix is
coming out.
IMPORTANT:
Failure to completely remove sanitizer or
water from the freezing cylinder before
placing in "AUTO" will damage the
freezer.
7. When pure mix is coming out of the air
bleed plug openings in the bottom of
the head, close the air bleed plugs and
wait for the pumps to fill the cylinders
and shut off.
8. After the cylinders are pressurized and
the pumps have cycled off, turn the
selector switches to "AUTO".
Figure 8-2 Duke Piston Remote (DPR)
Pump
9. Allow the freezer to cycle for 15 min-
utes. The product should now be ready
to serve.
10. The product temperature should be
18°F (-8°C) and have an overrun of 40-
45%. If the temperature is incorrect by
only a small margin, (less than 2°F or
1°C) allow the machine a few extra
minutes to regulate itself.
11. If the overrun is incorrect, do not make
any adjustments until another reading
has been made after at least one full
cylinder of mix has been served.
Overbleeding or underbleeding of the air
through the air bleed plug can cause
slightly incorrect overrun for the first
cylinder of product. Also see Section
10, General Information.
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