Grindmaster Crathco 5512, Operation And Instruction Manual

Crathco

®

5512 Manual

Page 9

Product Tips (cont.)

Some cappuccino or latte’ mixes contain dairy products which can spoil if not refrigerated. If the freezer is to be
turned off at night these products must be removed from the freezer. Contact your local health department regarding
their regulations regarding proper mix handling and storage.

Consistency Control - Overview

CAUTION:

SHOCK HAZARD! THIS ADJUSTMENT REQUIRES REMOVAL OF THE ELECTRICAL BOX

COVER AND SHOULD BE MADE BY A QUALIFIED SERVICE TECHNICIAN.

An electronic circuit board, mounted inside the front electrical box, controls the consistency (thickness) of the frozen
product in the “Freeze” setting, and controls the freezing cylinder and storage hopper temperature in the “StandBy”
mode.

The “freeze” mode consistency setting adjusts the frozen product thickness. In the “freeze” mode, as the liquid mix in
the cylinder freezes, it becomes harder for the motor to turn the dasher assembly. The control board senses the
amount of energy that the drive motor consumes as it rotates the dasher assembly through the product in the cylin-
der. The control board will turn the compressor and barrel solenoid valve off at the proper consistency. The drive
motor will continue to run for 45 seconds after the compressor is cycled off. This is called the blending cycle. After the
blending cycle is complete the drive motor also is shut off. The drive motor and compressor will run together at any
time refrigeration is required in the barrel. The compressor will run independently for the hopper if required. The hop-
per is controlled by temperature. The thermistor will signal the board and the board will start the compressor and
open the hopper solenoid valve.

The unit will remain off until either the timer in the control board (either 10 or 15 minutes dependent upon which
value is selected) restarts the drive motor. In this case the drive motor will run for 45 seconds and if no refrigeration
is required the drive motor will then shut off. If refrigeration in the barrel is required the freeze cycle is repeated as
well as the blending cycle. The unit will also restart the drive motor if the plunger is raised. The plunger switch will
start the drive motor and remain on as long as it is held open. After the plunger is closed the drive motor will contin-
ue to run for 45 seconds.The compressor will start, and barrel solenoid valve will open. If refrigeration is required dur-
ing this time the freeze cycle and blend cycle will follow.

In the “standby” mode, the control board senses the temperature of the product in the barrel. The drive motor is
cycled on time only. It will operate for 2 minutes ON then 18 minutes OFF as long as it is in “standby”. The compres-
sor and drive motor are cycled independently for the barrel in the “standby” mode. Once the barrel thermistor signals
to the board, the board will start the compressor and the barrel solenoid valve will open as refrigeration is required. It
will continue to run until satisfied. The plunger switch is disabled and the drive motor will not start when the plunger is
opened. The hopper is still controlled by temperature. If the thermistor signals a raise in temperature the compressor
will start and the hopper solenoid valve will be opened. It will continue to run until satisfied.

In the “clean” mode the drive motor will run continuously. (The compressor will not run in the “clean” mode.) This is
for emptying out product for cleaning purposes.

CAUTION:

SHOCK HAZARD! THIS ADJUSTMENT REQUIRES REMOVAL OF THE ELECTRICAL BOX

COVER AND SHOULD BE MADE BY A QUALIFIED SERVICE TECHNICIAN.

The electronic control has three adjusters; one to set the “Freeze” mode product consistency (thickness), one to set
the “StandBy” mode cylinder temperature and one to set the “StandBy” mode hopper temperature. The “Freeze”
mode consistency setting adjusts frozen product thickness. Always adjust this control to deliver a frozen product that
is as thin (soft) as possible yet is still acceptable to the customer.

There are eleven (11) lights on the circuit board that indicate the following: (See Figure H )

BARREL (D1) - Illuminated when the freezing cylinder (barrel) has achieved the pre-set temperature in the 
"Stand- by" mode.

HOPPER (D2) - Illuminated when the hopper has achieved the pre-set temperature in the "StandBy" mode.

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