DONPER USA—USER MANUAL
35 — COPYRIGHT DONPER USA 2015
Problem Possible Cause Solution
Squealing sound
when the handle is
pulled down to dis-
pense or when the
drive motors turn on
during the Auto
mode.
1. Product inside the freezing
cylinder is frozen solid or nearly
solid.
2. Product Firmness Level is
set too high.
3. Drive motor belt is loose and
needs adjustment.
4. Worn or slippery belts.
1. Turn the machine off to
allow the mix inside the
freezing cylinder to thaw.
2. Decrease the Firmness
Level Setting (lower num-
ber).
3. With the machine un-
plugged, inspect belts for
proper tension and tighten
as needed.
4. With the machine un-
plugged, replace worn
belts with new.
No product comes
out when the draw
valve is opened and
the machine is in
Auto
Mode.
1. The feed tube is installed
with the hole on the upward
side instead of the downward
side.
2. Low level of mix in the hop-
per.
3. Mix inside the freezing cylin-
der is frozen solid or nearly sol-
id
4. Beater is rotating in the
wrong direction.
1. Remove and reverse
the position of the feed
tube so the hole is near
the bottom of the tube
when installed. .
2. Add mix to the hopper.
3. Decrease the firmness
level (lower number)
setting.
4. Call the Donper USA
service line to correct the
motor rotational direction,
as an electrician will be
needed to evaluate the
electrical connections.
Mix is too firm. 1. Mix in the freezing cylinder is
too cold.
2. The feed tube and/or air cap
are not installed correctly.
1. Decrease the firmness
level setting (lower num-
ber).
2. Install feed tube in the
standard insertion position
(i.e. hole side down).
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