19
Models 750, 751, 754, 774, 791, 794
Important: To the Operator
130819
The following chart identifies the symbol definitions.
= OFF
= ON
= MIX
= STANDBY
= WASH
= AUTO
Power Switch
When placed in the ON position, the power switch
allows SOFTECH control panel operation.
MIX LOW Indicator Light
Located on the front of the machine is a mix level
indicating light. When the light is flashing, it indicates
that the mix hopper has a low supply of mix and should
be refilled as soon as possible. Always maintain at
least 3” (7.6 cm) of mix in the hopper. If you neglect to
add mix, a freeze
−
up may occur. This will cause
eventual damage to the beater, blades, drive shaft,
and freezer door.
MIX REF Key
When the MIX REF key is pressed, the light comes on
indicating the mix hopper refrigeration system is
operating. For the Models 754, 774, 791, and 794 the
MIX REF is controlled by the left side of the freezer as
viewed from the operator end. The MIX REF function
cannot be cancelled unless the AUTO or STANDBY
modes are cancelled first.
STANDBY Key
The Separate Hopper Refrigeration System (SHR)
and the Cylinder Temperature Retention System
(CTR) are standard features on these machines. The
SHR incorporates the use of a separate small
refrigeration system to maintain the mix in the hopper
below 40
_
(4.4
_
C) to assure bacteria control. The CTR
works with the SHR to maintain a good quality product.
During long “No Sale” periods, it is necessary to warm
the product in the freezing cylinder to approximately
35
_
F to 40
_
F (1.7
_
C to 4.4
_
C) to prevent overbeating
and product breakdown.
To activate the SHR and CTR, press the STANDBY
key. Remove the air orifice and place the air tube (
end
without the hole
) into the mix inlet hole.
IMPORTANT:
Make sure the level of mix in the
hopper is
below the mix delivery hole in the feed
tube.
Failure to follow this instruction may result in
lower product quality when normal operation is
resumed.
When the STANDBY key is pressed, the light comes
on, indicating the CTR (Cylinder Temperature
Retention System) has been activated. In the
STANDBY mode, the WASH and AUTO functions are
automatically cancelled. The MIX REF function is
automatically locked in to maintain the mix in the
hopper.
To resume normal operation, press the AUTO key.
When the unit cycles off, the product in the freezing
cylinder will be at serving viscosity. At this time, place
the air tube (
end with the hole
) into the mix inlet hole
and install the air orifice.
WASH Key
When the WASH key is pressed, the light comes on.
This indicates beater motor operation. The STANDBY
or AUTO modes must be cancelled first to activate the
WASH mode.
AUTO Key
When the AUTO key is pressed, the light comes on.
This indicates that the main refrigeration system has
been activated. In the AUTO mode, the WASH or
STANDBY functions are automatically cancelled. The
MIX REF function is automatically locked in to
maintain the mix in the mix hopper.
Note:
An indicating light and an audible tone will
sound whenever a mode of operation has been
pressed. To cancel any function, press the key again.
The light and mode of operation will shut off.
