Grindmaster CP3 User manual

Service Manual
For
Models CP3, CP3A, CP33A,
CP3E, CP3AE, CP33AE
Crathco Cold Powdered Beverage Dispensers
Warning Labels Page 3
Installation and moving Page 4-5
Cleaning of unit Page 6-7
Dispensing Page 8
Portion and Drink Strength Adjustment Page 9
Prepare for shipment Page 10
Refrigeration System Maintenance Page 11
Preventative Maintenance Checklist Page 12
Troubleshooting Page 13
Replaceable parts Illustration Page 14-15
Controller and Refrigeration Info Page 16-17
Exploded Views Page 18-34
Wiring Diagrams Page 35-37
Table of Contents
Grindmaster Corporation
4003 Collins Lane
Louisville, KY 40245 USA
[phone] (US & Canada only)
Fax [phone]
www.grindmaster.com
©Grindmaster Corporation, 2007 0807 Form CC-352-03
Printed in USA

Warning Labels
Part # 71582 – Warning label located on the lower right hand corner of the lower
front panel. “Disconnect power before servicing unit”
Part # 61848 – Warning label located on plenum cover under hoppers on inner
front tray. “Do not pour liquids into tray. Failure to comply will damage the
dispenser and void the warranty” It is also written in French and Spanish as well.
Part # 65288 – Warning label on upper front panel. “Important to prevent
overflow, release button when cup is 2/3’s full. This will produce a full cup”
Crathco Cold Powde
r
ed Beverage Dispense
r
PAGE 3

Water Inlet Connection
The National Sanitation Foundation requires the following for an NSF approved water hook-up:
1. A quick disconnect water connection or enough coiled tubing so the machine can be moved for cleaning
underneath without the water being disconnected from the machine.
2. An approved backflow prevention device, such as a double check valveis to be installed between the
machine and water supply.
3. Water pipe connections and fixtures directly connected to potable water supply shall be sized, installed, and
maintained in accordance with applicable codes.
Unpacking
To remove the machine from the box:
1. Remove staples from the top of the box.
2. Remove top padding from the top of box.
3. Using a utility knife, cut the box vertically from the top to the bottom starting at the top rear corner.
4. Cut the box in the front corners.
5. Remove the machine.
If you intend to keep the box:
1. Tilt the box with the machine 45° and remove staples from the bottom - bring the bottom box flaps up.
2. Tilt the box to the opposite side and remove remaining staples - bring the bottom box flaps up.
3. Set the box to normal position and slide the box upward.
4. Remove drip tray accessories from the bottom pad.
5. Remove the machine from the pad.
Installation
Installation Notice
A water filter is recommended for the water supply to the dispenser, especially in areas where water contains a
high level of minerals such as calcium or other solids. Over long periods of time, calcium deposits build on
heat-exchanger coils and will lower the cooling capacity of the system. Calcium build-up will also occur on the
strainers enclosed in the inlet of the water valves as well as in the inlet of the dispensing valve.
The cooling system is provided with copper coils, designed to last the life of the dispenser. However, some
chemicals in treated or non-treated water, specifically chlorine and sulfur (sulfide) may shorten the life of the
coils. The initial investment in the filtering system will pay for itself in product quality and by ensuring a longer
life for the machine.
Start-up Procedure
1. Install drain tray in front of machine.
2. Flush the water line to purge any debris from the supply line.
3. Connect the 1/4” male flare adapter (provided) to the inlet valve on the back of the
machine.
4. Connect the water line to the connection and turn the water supply on.
a. Minimum water pressure to the machine: 20 psi (1.3 bar))
b. Maximum water pressure to the machine: 100 psi (6.8 bar)
5. Plug the power cord into the proper electrical outlet (either 115V 60 Hz or 220V, 50 Hz).
115 Volt power requirements are as follows 115Volt, 60 Hertz 518 watts , 4.6 amperes.
Note : Take precautions to insure the electrical circuit is not overloaded. It is advised
that this unit be installed on a dedicated electrical circuit.
6. Turn the power switch to the “ON” position and allow the water tank to fill. The machine will make a subtle
hissing sound when this occurs. Allow 1-3 minutes for fill time depending on inlet water pressure.
Page 4 Crathco Cold Powdered Beverage Dispensers

Installation (cont.)
Crathco Cold Powdered Beverage Dispensers Page 5
7. After the water tank has filled, allow 90-150 minutes to build ice-bank depending on ambient temperature
and the initial water temperature. (Green ready light will illuminate when compressor stops and the
machine has reached full cooling capacity.)
8. Remove the powder hoppers, rotate the dispense elbow to the “UP” position and fill with desired powder
product. IMPORTANT: Make sure that the auger inside inside the hopper is correctly installed prior to
filling. Reinstall powder hoppers. Turn dispense elbow down toward the mixing funnel to rest at a 7 o’clock
position.
9. Peel protective film off the merchandiser cover and install graphic. Install flavor decals as needed.
NOTE: If water supply is allowed to run dry, watchdog timer circuit may disable fill circuit. Ensure adequate
water supply for machine, then reset machine by turning power switch “OFF” for 3 seconds and then turning
the power switch back “ON”.
MOVING MACHINE, TANK DRAINING INSTRUCTIONS
Turn the power switch off first.
1. If the CP3 machine needs to be moved, tank draining instructions are as follows.
Indentify the right hand side panel and remove it. ocate the ice bank tank drain hose. Pull the
hose out to allow it to drain into a bucket
Remove blank off plug from hose. The tank will drain all liquid out into the bucket (about 2
gallons of liquid).
The ice bank (about 1.5 quarts) will remain in the tank, to remove proceed as follows.
Place blank off plug back into drain line. Turn power switch on and allow the tank to
refill with water.
Turn off the power switch off and repeat the draining procedurell and drain the tank at
least 3 times to insure all ice is melted away from coils
2. If machine will be exposed to temperatures below 32 degrees F (less than 0 degrees C) all of the water
from the machine must be removed to avoid water freeze-up and damage to the valves.
Follow above procedure for draining the ice bank tank and in addition.
Turn off water supply and remove water supply line from the water inlet valve.
Power up machine.
Apply pressurized air to the inlet valve and at the same time push dispensing button. Repeat
this for each dispensing head. Some water will splash at the dispensing funnel and nozzle.
Air pressure should not exceed 4.1 bar (60 psi).

Daily Cleaning (2 times per day)
Empty drip pan as needed and wash in a solution of dish detergent.
Rinse out the whipper chambers by placing the rinse switch (located on the right of the
dispensing valves when the door is open) in the “ON” position. Dispense one to two cups until
the water is clean. Short bursts of dispensing may also help clean the chambers more
effectively. When completed, return the rinse switch to the “OFF” position.
Daily Cleaning (once at the end of the day)
Cleaning the Chambers - Disassembly Cleaning the Chambers - Reassembly
Remove the hoppers and refill with product. Replace the o-ring onto the whipper shaft.
Open the door and remove the mixing
funnel shroud by pulling forward while
turning 1/4 turn to the right. Lift off and
remove.
Replace the whipper blade by
aligning the flat side inside the blade
with the flat side of the motor shaft.
Push blade firmly onto shaft up to the
end of the flat.
Remove the mixing funnel by lifting the
neck of the funnel out of the whipper
chamber, then tilt clockwise. With one
hand on the water inlet fitting on the back
panel, pull the funnel out of the white ring.
Press dispense nozzle onto whipper
chamber.
Remove the whipper chamber by
rotating it 1/8 of a turn clockwise,
then pull to remove.
Put whipper chamber over whipper
blade and whipper base and turn
counterclockwise until it locks into place.
Remove the dispense nozzle from
the whipper chamber by pulling it
apart.
Replace the mixing funnel by positioning
the large opening up and tilting it slightly
counterclockwise. Lubricate the o-ring on the
water inlet with a film of food grade approved
lubricant. Insert the water inlet into the water
inlet fitting on the back panel then rotate the
funnel to the right until the neck of the funnel seats inside the
whipper chamber opening.
Remove the whipper blade by
grasping the whipper blade with two
fingers and firmly pulling to remove.
Remove the o-ring from the whipper
shaft near the whipper base and wipe
the motor shaft with a clean, damp towel.
Wash o-ring in running water.
Replace the shroud by placing it on the
mixing funnel with the opening to the right.
Turn the shroud to the left until the opening
in the shroud rests inside the opening in the
back panel. If shroud doesn’t rest inside the
opening on the front panel, push in or lift up on
the funnel.
PARTS IN CONTACT WITH FOOD MUST BE WASHED,
RINSED, SANITIZED, AND AIR DRIED.
1.
2.
2.
3.
4.
6.
7.
2.
4.
5.
6.
1.
5.
1.
3.
8.
CAUTION: When cleaning the unit, do not use cleansers, liquid bleach, powders or any other substance that contains chlorine.
These products promote corrosion of stainless steel and plastic parts. Use of these products voids the warranty.
Cleaning
Page 6 Crathco Cold Powdered Beverage Dispensers

Weekly Cleaning (cont.)
Cleaning Hoppers - Disassembly Cleaning Hoppers - Reassembly
CAUTION: Do not wash hopper without first
disassembling.
IMPORTANT: All components must be completely dry
prior to reassembly.
Open door and rotate elbow on hopper
to the UP position to prevent spillage.
Place driveshaft bearing inside hopper
with threads going through the hole in
the rear of the hopper.
Remove the hopper from the cabinet. Secure the bearing by attaching the palnut
to the bearing at the outside rear hopper
opening. Tighten using fingers only. Use one hand
inside the hopper to push the bearing outward while
turning the palnut counterclockwise.
Remove the hopper cover
and empty hopper
contents.
Install the auger spring driveshaft and
the auger spring by inserting the flat end
of the spring into the hole in the auger
spring driveshaft.
Pull off the elbow. Insert assembly into lower front opening,
making sure the threaded end of the auger
spring driveshaft completely inserts into the
driveshaft bearing in the rear of the hopper.
Remove the auger pinwheel by pulling it
forward while stretching out the sides
of the hopper.
Place the washer over the
driveshaft bearing threads followed
by securing the drivelink onto the drive-
shaft bearing by turning counterclock-
wise. Secure the auger spring with one
hand while attaching the drivelink with
the other.
Remove the drivelink and washer at
the rear of the hopper by holding the
auger spring with one hand at the front of
the hopper while turning the drivelink
clockwise with the other hand.
Replace the auger pinwheel making sure the
pins are securely positioned inside the notches
under the hopper.
Remove the auger spring and auger spring
driveshaft by pulling out
through the lower front
opening of the hopper.
Turn the elbow DOWN toward the mixing
funnel. Stop when the elbow is at
the 7 o’clock position.
Remove the palnut at the rear of the hopper by turning it
clockwise then remove the driveshaft bearing from
the inside of the hopper.
All parts in contact with food must be washed, rinsed,
sanitized, and air dried.
!
1.
2.
3.
4.
5.
1.
2.
3.
4.
6.
9.
8.
7.
5.
6.
7.
PULL
Driveshaft
Bearing
PULL
Driveshaft
Bearing
Crathco Cold Powdered Beverage Dispensers Page 7

Changing the Merchandiser ightbulb
WARNING: Disconnect machine from branch electrical supply before changing the lightbulb.
NOTE: The machine uses a F8T5 12” 8 watt replacement bulb.
Remove the front merchandiser photo
and cover by grasping the edges of the
merchandiser.
Gently insert both ends of the bulb into
the socket and turn the bulb 1/4 turn to
the right until the bulb locks into place.
Remove the old lightbulb by gently
turning the lightbulb 1/4 turn to the left
and pulling the bulb from the socket.
Replace the merchandiser photo and
cover.
Install the new bulb by lining up the pins
on either end of the bulb parallel with the
socket opening.
1.
2.
3.
4.
5.
How to Dispense a Cup of Beverage
Models with Manual Dispense Switches
(Refer to serial tag to verify model number of your machine)
Models with Portion Control
(Single portion or 3 portion per head)
Place cup under the selected
drink dispense nozzle.
Place cup under the selected
drink dispense nozzle.
Push and hold the appropriate
switch on the touchpad until
cup is 2/3 full and then
release switch.
Push appropriate switch on
the touchpad, then release
to dispense one preset serving.
(See Portion Control Adjustment
to set portion size)
NOTE: Portion may be cancelled by “push and release” of the switch during dispensing.
CAUTION: Cup must rest flat on tray with a 1/4” (6 mm) clearance between cup and spout.
1.
2.
1.
2.
Dispense Switch
Dispense Switch
Page 8 Crathco Cold Powdered Beverage Dispensers

Portion Adjustment
If machine is a manual dispense, there are no portion control adjustments to be made. (Please refer to serial tag to
reference model number.
Setting Single Portion Control Setting Three Portion Sizes Per Head
Place a cup under the selected drink
dispense nozzle.
Place a cup under the selected drink
dispense nozzle.
Press and hold the dispense
switch for 10 seconds.
Press and hold one of the size
buttons (S, M or ) on the touch
pad. (Hold button throughout entire
procedure).
Then press and release the manual
(top-off) button ( ) . After 10 seconds,
while still depressing portion button, programming sequence
will start.
After a 10 second time delay, the machine is triggered into
program mode and will begin dispensing.
Continue pressing the button until cup is approximately
2/3 full, then release the switch to prevent overfill. The
elapsed portion dispense time is saved to memory and
will remain until the dispense switch is reprogrammed.
Continue pressing the size button until cup is approxi-
mately 2/3 full, then release the switch to prevent overfill.
The elapsed portion dispense time is saved to memory
and will remain until the dispense switch is reprogrammed.
Check the portion size by placing an empty cup under the
desired dispense nozzle, the press and release the
dispense switch. The machine will dispense the
preprogrammed portion size.
Check the portion size by placing an empty cup under the
desired dispense nozzle, then press and release the
dispense switch. The machine will dispense the
preprogrammed portion size.
If the portion size is incorrect, repeat above steps until the
desired portion size is achieved. Each dispense switch
needs to be set separately.
If the portion size is incorrect, repeat above steps until the
desired portion size is achieved. Each portion size for
each head needs to be set separately.
CAUTION: After button release, there will be 50 ml (1.7 fl. oz.) of water added to the cup. Each dispense includes a 1 second
delay for powder at start and 1 second run-on for water and whipper at end of dispense. This allows for extra rinsing inside the
whipper chamber.
NOTE: Each “S” button on touch pad is pre-set to dispense 150 ml (5 fl. oz.) of water. “M” and “ ” settings are not pre-set for
any specified volume unless requested.
1.
2.
3.
4.
5.
6.
1.
2.
3.
4.
5.
Dispense Switch
Drink Strength Adjustment
Tools Required: Small, Flat Screwdriver
Dispense a drink to determine if drink is
too strong or too weak.
Using a flat head screwdriver, adjust individual dispense
heads by rotating appropriate adjustment knob.
Clockwise rotation will result in a stronger drink and
counterclockwise will result in a weaker drink.
Remove drip tray. Dispense a drink to determine if drink strength is
acceptable, repeat adjustment steps until desired drink
strength is achieved.
NOTE: Clockwise rotation will result in a stronger drink and counterclockwise will result in a weaker drink.
NOTE: Water flow rate is factory preset at approximately 24 m (0.80 ounces) per second.
1.
2.
3.
*
NOTE: Machines are factory set in cooling mode to control drinking water temperature between 2.2°C (36°F) and
5.5°C (42°F) and it cannot be adjusted.
4.
Crathco Cold Powdered Beverage Dispensers Page 9

Prepare for Shipment
Important: Always completely empty ice bank water tank and POWDER HOPPERS prior to shipping unit. (See
Draining the Tank and Cleaning the Hoppers section).
NEVER SHIP UNIT WITH POWDER IN HOPPER OR WATER IN TANK - THIS MAY CAUSE
IRREPARAB E DAMAGE.
Draining the Tank
Always empty the tank before shipping.
WARNING: Draining of the tank should be performed by a qualified service technician.
NOTE: CP3 ice bank tank contains 7.5 (2 gallons) of water if no ice is present in the tank.
Prepare a container to drain the
tank water into. The container
must hold at least 10
(2.6 gallons).
Allow the tank to drain completely.
NOTE: It is likely that there will be approximately 4.5 lb
(2 kg) of ice around the evaporator. This ice needs to be
melted and the water drained from the machine:
a) Plug the drain hose
b) Power up the machine
c) Allow to fill the tank.
d) When the compressor starts (fan blade will turn)
turn the machine OFF.
e) Drain the tank.
f) Repeat this cycle three times beginning step (a).
Remove right side louver panel. Drain hose is right behind
the panel routed down and then up to lean against back
wall - The hose is insulated.
To drain remaining water from
the bottom of the tank, tilt the
dispenser 30° to the right. Once
the tank is empty, securely
replace the plug and
clamp on the end of the hose.
Reposition the drain hose inside
the hose clip.
ocate the silicone drain hose
end. Put the end of the drain
hose into the container.
Replace the louver panel.
Pinch hose with fingers and remove the hose clamp
and plug.
1.
2.
3.
4.
5.
6.
7.
!
Page 10 Crathco Cold Powdered Beverage Dispensers