Duke DQ 957RMT, Operator’S Manual With Illustrated Parts List

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Twin Twist Soft Serve Freezer Model 957RMT
184957 35
Test to see which air meter will give you
the best overrun and the best product.
Run each air meter for a few hours until
you make the determination. (You may
have a slightly higher overrun when you
first start up the freezer.) After the freezer
has run long enough to dispense at least
one full cylinder of product, you will have
the overrun that the freezer will hold the
remainder of the day.
The overrun is regulated by the air meter.
You were supplied with six air meters,
each containing a different size orifice.
The smaller the hole and number, the
lower the overrun. The larger the hole and
number, the higher the overrun. Each
half-step change of the air meter number
will result in a 3-5% change in overrun.
Each full-step change will result in a
8-10% change in overrun.
The orifice or hole in this air meter must
be open at all times. It is the only source
of air into the freezing cylinder. Check this
daily!
The mix will be a determining factor as to
the amount of overrun you will be able to
achieve. Some mixes will accept more air
than others, thus affecting the size of air
meter you can use.
11.5 Overrun Adjustment
Figure 10-1 Air Meter
11.6 Rerun
1. International Dairy Queen
®
does not
permit the use of rerun.
2. Rerun product is unable to accept
the same amount of air as fresh
product; therefore, you cannot
produce a quality product with rerun
mix. Product may appear grainy and
icy, and operational problems may
result from the use of rerun.
For further information contact the
Service Department of H. C. Duke &
Son, LLC by phone at (309) 755-4553 or
(800) 755-4545.
Rerun is product that has been drawn through the freezer into a container and has
melted down to be reprocessed.