Grindmaster Corporation 3341 Service manual
© Grindmaster Corporation, 2000
PRINTED IN USA
Grindmaster Corporation
4003 Collins Lane
Louisville, KY 40245 USA
(502) 425-4776
(800) 695-4500 USA and Canada only
FAX (502) 425-4664
www.grindmaster.com
0705 Form # WH-302-02
Part # W0600224
Models 3341, 3341A, 3342, 3352
Remote Beverage Freezers Manual
Model 3341
Model 3341A
Model 3342
Model 3352
Crathco®Remote Beverage Freezers Page 1
Table of Content
s
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Freezer Application & Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Operation & Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Key Parts Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Assembly & Wiring Diagrams (3341/3341A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Assembly & Wiring Diagrams (3342/3352) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Autofill Connections Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Information contained within this manual is subject to change without notice.
Contact Grindmaster Corporation’s Customer/Technical Service Department at 1-800-695-4500 with any questions or for clarification.
Page 2 Crathco®Remote Beverage Freezers
OPERATOR’S SAFETY PRECAUTIONS
IMPORTANT: Failure to comply with the following safety precautions may result in severe personal injury or damage
to the machine.
1. Read and understand the operating instructions in this manual thoroughly. Only allow properly trained persons to
operate this machine.
2. Note all warning labels on the freezer. If any warning labels are missing or damaged replace them immediately.
3. Do not wear loose fitting garments or jewelry which could cause a serious accident.
4. Stay alert at all times during operation.
5. Keep operating area clean.
6. Do not attempt any repairs unless the main power supply to the freezer has been disconnected. Contact
Grindmaster Technical Service for service assistance.
7. Do not put objects or fingers in the dispense plunger.
8. Do not operate freezer if any excessive noise or vibration occurs. Contact your authorized service agent.
9. Be certain machine is installed with adequate space for proper air circulation. (See installation section.) Failure
to provide sufficient ventilation will reduce freezer performance and void equipment warranty.
FREEZER APPLICATION AND SPECIFICATIONS
Remote Freezers
The freezer consists of a freezing cylinder with a rotating internal auger (dasher) that is belt-driven by an electric
motor. The auger scrapes frozen product off of the inside of the refrigerated cylinder.
Crathco remote beverage freezers are designed to operate in conjunction with a remote condensing unit or be
connected to a central refrigeration system. It is recommended that the condensing unit have no more than 2 1/2 hp
per barrel to ensure maximum efficiency. The refrigerant must be R404A (Dupont®HP62®). The refrigeration for each
barrel is controlled by the liquid feed solenoid. The liquid feed solenoid is opened and closed by the limit switch
attached to the drive motor. (When the product consistency reaches the desired point, the switch closes and
de-energizes the liquid feed solenoid 20 seconds later.) Twin units operate with each barrel independently. Quick
connect refrigeration connections are supplied with each unit. Each freezer is factory supplied with 5/8" suction and
3/8" liquid connections. The piping connecting the freezer with the remote condensing unit or central system should
be sized according to industry standards. The installer is responsible for sizing the refrigeration lines to the unit.
When properly operated and cared for, the remote freezers will provide many years of service. Proper care includes
regular cleaning and maintenance. To minimize the amount of maintenance necessary, follow the operating procedures outlined in this manual.
There are four variations of the remote unit:
3341 – standard single barrel remote unit
3342 – standard twin barrel remote unit
3341A – single barrel remote unit with internal autofill system
3352 – dual barrel remote unit with internal autofill system
Located on the right, left and rear panels. (part # W0600218)
Crathco®Remote Beverage Freezers Page 3
Remote Freezers (cont.)
The autofill system on the 3341A and 3352 models is designed to keep the product hopper full to a predetermined
level. This assembly eliminates the necessity of pre-mixing concentrate and water and the possibility of manual
mixing errors. The mixed product is automatically fed to a Remote Fill Control which is located in the freezer. The
Remote Fill Control then adds pre-mixed product to the freezer mix storage reservoir as required.
When the autofill switch is ON and when the level drops below the probe for 15 seconds, the product feed solenoid
opens. This allows the product from the remote pumping system to fill the hopper. When the liquid level reaches the
probe, the product feed solenoid closes. NOTE: As a safety, the refrigeration liquid feed valve closes until the level in
the freezer reaches the probe. To bypass the automatic feed feature, simply turn the autofill switch to manual. This
allows the refrigeration to operate independently of the autofill and the hopper must be filled manually.
Product Tips
These freezers were designed to dispense a wide variety of frozen beverages including frozen fruit juice, frozen
lemonade, slush and frozen cocktails. These products can be served in consistencies ranging from thin to fairly thick.
Two types of dispensing valve plungers and product consistency springs are available depending on the thickness of
the product being served. These parts are interchangeable depending upon your needs. One plunger, part W0480438
has one horizontal outlet slot and is used to serve thin to medium products such as frozen lemonade and slush. The
other plunger, part W0480451 has two horizontal outlet slots and is used to serve thicker product such as neutral
base frozen cocktails. A red spring, part W0631239, is used on the drive motor to adjust product consistency to serve
thin to medium products. The yellow spring, part W0631238, is used for thicker product. The spring is located next to
the drive motor behind the right hand side panel.
Over an extended period of time, some products, such as frozen cocktails that contain alcohol, have a tendency to
separate, or stratify. Separation of product on the mix storage hopper can result in frozen product quality inconsistency.
Simply keeping the product, in the mix storage hopper, stirred on a regular basis will eliminate this problem.
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 its regulations for proper mix handling and storage.
Carburetor Assembly
Your new freezer uses a metering device, known as a carburetor, to feed the proper ratio of mix and air into the
freezing cylinder (and to prevent frozen product from rinsing out of the freezing cylinder). The carburetor, or carb tube,
is a tube with a hole, or series of holes, bored through the side. It is located in the hopper and fits in the hole that
leads to the freezing cylinder. Air flows into the freezing
cylinder through the top of the tube and mix flows in
through a smaller hole in the side of the carb tube. The
size of the mix inlet hole can be balanced with the viscosity
(thickness) of the liquid mix and product draw rate, in such
a way that the proper amount of mix is fed into the freezer
cylinder to blend with air at just the right ratio. Mix viscosity
varies by mix type, mix temperature and mix age. Different
serving rates also demand different feed rates. For many
products, the proper mix to air ratio is generally accepted
to be two parts mix to one part air. This proportion
yields a finished product that is both tasty and profitable. At this ratio, one gallon of liquid mix will yield a
volume of one and one-half gallons of frozen product.
This additional volume is the overrun in the product. Crathco offers three versions of carb tubes (see Figure A).
Depending on the product being served and overrun requirements there is a standard tube for most slush or cocktail
products, a low overrun carb tube that allows all air trapped in the freezing cylinder to escape and a smoothie/shake
carb tube. This carb tube has an outer sleeve that can be rotated to line up with different hole sizes to provide various
levels of overrun. Most applications only require the standard carb tube.
Figure A
Thick product carb tube
(W0471136)
Low overrun
carb tube
(W0472060)
Standard carb tube
(W0471076)
Page 4 Crathco®Remote Beverage Freezers
Freezer Specifications
Models 3341/3341A Models 3342/3352
Dimensions
(HxWxD)
26 1/2”H x 13”W x 29”D
67cm x 33cm x 73cm
(includes header box)
26 1/2”H x 18 1/2”W x 29” D
67cm x 47cm x 73cm
(includes header box)
Electrical
115 volt, 60 Hz, 1 Phase
Dedicated 20 Amp circuit
115 volt, 60 Hz, 1 Phase
Dedicated 20 Amp circuit
Drive Motor (1) 1/2 hp (2) 1/2 hp
Compressor Remote condensing unit Remote condensing unit
Cooling N/A N/A
Actual Weight 110 lbs. (49.9 kg) 140 lbs. (63.5 kg)
Mix Hopper Capacity
3341-5 gallons (18.9 liters),
3341A-2.25 gallons (8.55 liters) 3 gallons (11.3 liters)
Freezing Cylinder Capacity 1-1/2 gallons (5.7 liters) 1 1/2 gallons (5.7 liters)
Refrigerant See Serial Number Plate See Serial Number Plate
Refrigerant Charge See Serial Number Plate See Serial Number Plate
High Side
(approximate operating pressure) 120ºF – 130ºF 120ºF – 130ºF
Low Side
(approximate operating pressure) 10ºF – 15ºF 10ºF – 15ºF
High Side Design Pressure See Serial Number Plate See Serial Number Plate
Low Side Design Pressure See Serial Number Plate See Serial Number Plate
Mix Considerations – General
Freezing characteristics are affected by the amount of sweeteners and solids in the mix, called BRIX. BRIX can be
measured with an instrument called a refractometer. A BRIX reading of between 11 and 14 will provide optimum freezer
operation. Mixes with the correct BRIX level will freeze down to a smooth, uniform consistency. Mixes with too high a
brix level will take longer to freezer down and will yield a soft, wet, frozen product. Mixes with too low a brix level will
have larger ice crystals and will have a tendency to dispense slowly or freeze up machine.
Alcohol content affects product freezing characteristics. High alcohol content may prevent the freezer from serving a
product at proper thickness.
NOTE: Always take BRIX measurements using mix that has been thoroughly blended, before it is frozen. Always allow
frozen mix to thaw thoroughly before taking a reading.
For maximum output capacity always pre-chill mix before adding it to the freezer. Pre-chilled mix gives the freezer a
head start on the freezing process and will speed both initial freeze down and recovery time. It is normal for output
capacity to decrease when warm mix is added, or when the freezer is operated in a warm area.
Crathco®Remote Beverage Freezers Page 5
INSTALLATION
Shipment T
ransit
The freezer has been operated and tested at the factory. Upon arrival the complete
freezer must be thoroughly checked for any damage which may have occurred in
transit. NOTE: A Tip (N) Tell warning device is placed on each shipping carton at the
factory. If the arrow tip is blue, the carton has been tipped in transit. (see Figure B)
THE CARRIER IS RESPONSIBLE FOR ALL DAMAGE IN TRANSIT WHETHER
VISIBLE OR CONCEALED. DO NOT PAY THE FREIGHT BILL until the freezer has
been checked for damage. Have the carrier note any visible damage on the freight bill.
If concealed damage and/or shortage is found later, advise the carrier within 10 days
and request inspection. The customer must place any claim for damage and/or shortage
with the carrier. Grindmaster Corporation cannot make any claims against the carrier.
Installing your Freezer
1. Place the self-sealing rubber pad on a level counter stable and strong enough to
support the freezer’s weight. If equipped with legs instead of pad, install legs by
screwing them into the four leg holes on the bottom of the unit.
2. Make sure freezer is to be placed in a location that is within 6' of a properly grounded
circuit and allows adequate space for rear remote refrigeration connections and on
the sides for air circulation.
NOTE: Minimum clearance is 2" (5cm) on both sides and 8" (20cm) above the freezer.
(see Figure C)
3. Remove the side panels with a Phillips screwdriver and supporting all four sides, lift
machine up and place in appropriate area.
CAUTION: IF EQUIPPED WITH SPINNER DO NOT LIFT UNIT BY SPINNER SHAFT TO AVOID SERIOUS
DAMAGE TO SPINNER.
CAUTION: BEVERAGE FREEZERS ARE HEAVY PIECES OF EQUIPMENT. IT IS RECOMMENDED THAT
MOVING OR LIFTING THE UNIT BE DONE BY TWO PEOPLE TO AVOID INJURY.
CAUTION: FAILURE TO ALLOW ADEQUATE VENTILATION WILL VOID THE WARRANTY.
4. Remove cable tie used to secure motor during shipment. Make sure motor rocks freely.
(see Figure D)
5. Connection of refrigeration system: The unit is supplied with mating quick disconnect
fittings. Removal of the rear panel will show: One 5/8” suction connection, one 3/8”
liquid connection for each barrel. Connect unit to condensing unit using the quick
disconnects supplied. Line sizing to the unit should be sized to minimize pressure drops
through the suction and liquid lines. (see Figure E)
NOTE: This procedure must be done by a qualified technician.
6. 3341A and 3352 – Connect autofill product feed hose from pump assembly to
solenoids via the 1/4” tube in the rear of the machine. Page 35.
Figure C
Figure D – Removing
Plastic Cable Tie
Figure B
Figure E
Page 6 Crathco®Remote Beverage Freezers
Installing Your Freezer (cont.)
7. Review hopper contents to make sure all parts are available:
*Optional items specified when the unit is ordered.
8. Fill out Warranty Registration Card with the requested information and mail to Grindmaster Corporation.
9. Replace side panels.
10. Assemble the dispense valve following the instructions on page 9. The valve plunger, spring and retaining pin
come in the small parts bag.
11. Be sure ON-OFF-CLEAN switch (toggle switch located underneath the electrical box) is in the “OFF” position.
12. Connect the power cord directly to a properly grounded DEDICATED 120V/60Hz, 15 Amp circuit.
Do not use an extension cord.
CAUTION: Do not alter or deform the plug in any way! Altering or deforming the plug may damage
unit and will void warranty.
13. Remove the drip tray kit from the bubble wrap. Separate the parts and remove the protective coating. The drip
tray is mounted on two screws that are located on the lower front of the freezer cabinet.
14. Place the key hole slot of the drip tray support bracket on to these screws and tighten the screws.
15. Angle the back of the drip tray surround bracket into the drip tray support bracket and lower bracket
to lock it into place.
16. Place drip tray onto drip tray surround bracket.
17. Place the louvered drip tray insert into drip tray.
18. A private label or different drink header can be installed by removing
two screws from the electrical box cover. Carefully remove electrical box
cover. Place the header (transparency) between the clear and opaque
plates (plastic lens). Put these in place under the lip of the machine top.
Slip the electrical box cover back on to machine and reinsert the
screws. (see Figure F)
Part # Description
W0600224 Manual
W0600073 Rubber Pad Sheet
W0600121 Merchandiser Installation Sheet
W0600012 MSDS Sanitizer Sheet
W0600159 Warranty Registration Card
* Drip Tray Kit
* Hopper Cover
W0480445 Valve Handle
W0631230 Valve Spring
*
Carb Tube
*
Dispense Valve Plunger
W0470076 Lubricant
W0631903 Sanitizer Packets
W0600058 Laminated Cleaning Card
W0600327 Seal Installation Instructions
W0890220 4” Leg Set
Figure F
Crathco®Remote Beverage Freezers Page 7
OPERATION AND ADJUSTMENTS
How to Operate
1. Sanitize unit following the cleaning instructions starting on page 10.
2. Fill the mix storage hopper following the instructions on page 10. Allow
barrel to fill with product to proper level, then insert carb tube from parts
bag in hole toward rear of hopper. See Figure G.
3. Turn power switch to “ON” position.
4. Allow product to freeze in barrel. Compressor will turn off when product reaches
pre-set consistency.
5. To dispense product pull down valve handle and release when done.
6. If product consistency is not as desired, adjust per the instructions on page 7.
7. Refill mix storage hopper when “mix out” light is ON.
8. Clean the unit regularly following local health codes.
9. Perform maintenance when necessary to increase the life of the unit. See chart in this manual for regular
maintenance schedule.
Mix Low Function
These models will sense when the mix is low in the hopper. On 3341 and 3342 models, a simple float mechanism is
used to sense when mix is low in the hopper. (see Figure G) When the mix level is low, the mix low light located on
the front of the machine will illuminate. NOTE: Do not run the unit under mix low conditions for long periods of time.
This can affect machine performance or damage componentry.
On 3341A and 3352 models, mix low is sensed via the autofill system. When the mix level is low, the mix low light
will illuminate continuously for 2 minutes. After 2 minutes the light will begin to blink off and on for the next 8 minutes.
At the end of the 10-minute time the light will illuminate fully again. After the 10-minute cycle, the mix out safety
function is activated making the unit inoperable. The safety function shuts off the autofill and refrigeration. The unit
can be reset back to the freeze mode by simply adding mix into the hopper.
NOTE: If the mix low safety function has activated disabling the unit, and the product has not been added for an
extended period of time – verify the product is okay for re-use. If it is not, use fresh product to restart the unit. Empty
the unit of old product and follow cleaning and sanitizing procedures (page 8).
Consistency Adjustment
From time to time, it may become necessary to readjust the consistency setting (thickness) to compensate for
variation between different mixes or to switch from one type of product to another. This adjustment is made
as follows:
1. Disconnect electrical power.
WARNING: Do not attempt to readjust the freezer until electrical power has been disconnected.
2. Remove right side panel (facing the freezer).
3. Use the adjustment screw, situated on the front of the drive motor mounting bracket to
change product thickness. Turn the thumbscrew (3 full turns for red spring, 1 turn for
yellow spring) to make a noticeable change in consistency. (see Figure H)
NOTE: Clockwise is for thicker product consistency and counter clockwise is for thinner
product consistency. (see Figure I)
4. Reinstall the side panel, reconnect power.
5. Turn freezer to “ON” and allow it to freeze to desired consistency.
6. Check product. Repeat process until desired consistency is achieved.
NOTE: When making changes to a colder (thicker) setting, recheck
consistency again after the compressor has cycled off. When adjusting
(counter-clockwise) to a thinner consistency, a large portion of product
should be drawn from the dispense valve to reduce the product thickness
below the new set point (adjustment). Then allow the freezer to refreeze
product to the new setting.
Figure G
Figure H
Increase Thickness (turn clockwise)
Decrease Thickness (turn counterclockwise)
Figure I
Mix Low Float O-Ring
Carburetor
Mix Low Float
Adjustment Screw
Page 8 Crathco®Remote Beverage Freezers
CARE AND CLEANING
Cleaning and sanitizing frequency must be followed according to state and local health department regulations.
NOTE: Each time the freezer is disassembled, all internal components must be thoroughly washed and sanitized
using procedures recommended by your local health department. In lieu of local department recommendations,
use a three compartment sink; one compartment to wash parts in detergent, one compartment to rinse, and one
to sanitize.
For units with internal autofill, see section on page 11 for instructions on cleaning and sanitizing the autofill system.
Drain and Rinse
1. If the freezer is empty, proceed to Disassembly and Cleaning. If there is product in the freezer, turn the front
panel switch to “CLEAN”. On models using Remote Fill Control, (3341A and 3352 models), turn internal autofill
“OFF” before draining.
2. Open the front dispensing valve and drain all product from the freezer. Close dispensing valve.
3. Remove the carb tube and pour water into the storage hopper. Allow the water to fill the freezing cylinder.
NOTE: Use approximately 2 1/2 gallons (10 liters) of cool water per barrel to rinse freezer.
4. Turn the freezer panel switch to “CLEAN” for 5 minutes.
5. Open the dispensing valve and drain the water from the freezer. Close valve.
6. Turn the freezer “OFF”.
Disassembly and Cleaning
NOTE: For cleaning and sanitizing before initial start-up, remove carb tube, dispense plunger, handle and spring
from parts bag first.
1. Disassemble the dispensing valve assembly (figure J). Pull out valve handle retaining pin while supporting the
valve plunger from the bottom (figure K). Push up on the valve plunger and remove the stainless handle (figure L).
Slide the valve plunger and spring downward to remove (figure M).
2. Remove knobs and carefully remove the front dispensing valve assembly, leaving the
dasher assembly in the cylinder. Remove the plunger and valve body “O” Rings as
shown in figure N.
NOTE: The best way to remove an o-ring is to first wipe off all of the lubricant using a
clean paper towel. Pinch the o-ring upward with a dry paper towel between your index
finger and thumb. When a loop is formed in the o-ring, roll it out of the groove with your
other thumb. Always remove the o-ring farthest from the end of the plunger first. Carefully
inspect the o-rings and replace if necessary.
3. Remove the dasher assembly from inside the freezing cylinder taking care to avoid
damaging the rear seal assembly at the back of the freezing cylinder. Disassemble
the dasher assembly by removing the stator rod and front and rear stator rod bearings.
4. Remove stationary half of the shaft seal assembly from the back end of the freezer
cylinder. This is accomplished by reaching into the cylinder and pulling seal out with
your index finger. (see Figure O).
Figure K Remove PinFigure J Disassemble
Dispensing Valve
Figure L Remove Handle Figure M Remove
Plunger and Spring
Figure N Ring Removal
Figure O Installing the
stationary portion seal
Crathco®Remote Beverage Freezers Page 9
Disassembly and Cleaning (cont.)
5. Slide the rotary half of the seal off the dasher shaft. Inspect both seal components
carefully for nicks or cracks. Replace seal if defective.
NOTE: To prevent leakage, the surfaces of the rotary seal and stationary seal must be
smooth with no chips or cracks.
NOTE: All units are shipped with a standard ceramic seal (#W0340201) unless otherwise
specified. Certain products contain a coconut oil with requires a different sealing material.
For these products use the coconut oil seal (#W0340210). The stationary half of the
standard seal has a white polished surface. The stationary half of the coconut oil seal
has a glossy black surface.
6. Remove carb tube from bottom of hopper and remove o-rings. (see Figure P).
7. Remove drip tray and empty contents.
8. Take all components to the cleaning area.
9. Prepare 1 gallon solution of hot tap water and a good grade of dishwashing detergent.
10. Thoroughly wash all components in a warm, mild detergent solution, including
the inside of the freezing cylinder and mix storage hopper. DO NOT WASH
COMPONENTS IN A DISHWASHER.
11. Use a medium sized brush to clean the bottom of the valve body and the inside
of the plunger bore with detergent solution taking care to remove all remaining
lubricant (figure Q).
12. The exterior of the freezer should be cleaned as needed with a cloth towel.
CAUTION: Coarse rages, abrasive cleaners and excessive force can damage
and/or scratch the surfaces of the freezer.
Reassembly
NOTE: Allow all parts to dry completely before reassembly.
1. Reassemble drip tray and install.
2. Wet the inner rubber lip of the rotary half of the seal and the back end of the dasher
shaft with water. Slide rotary half of assembly onto the dasher shaft, RUBBER
FIRST, with the smooth sealing surface toward the back of the dasher. (see Figure R).
Be sure the rotary half is fully seated against the shoulder of the shaft.
3. Insert the stationary half of the seal into the ribbed rubber boot with the polished
surface facing out (forward).
4. Lightly lubricate the ribbed rubber boot of the stationary ceramic seal, (taking care
not to get any lubricant on the polished surface) and insert it straight back into the
recess at the back of the freezing cylinder, RUBBER FIRST. (Figure S)
NOTE: The stationary half of the seal must be completely dry before reassembling.
If the circular half of the seal is white, make sure that the grooved side is toward
the rubber. If the circular half is black, be sure the glossy side is facing out.
5. Reassemble the dasher assembly, as shown in Figure T. Insert the larger front
and smaller rear white plastic bearings into dasher, then slip in the stator rod.
6. Carefully and slowly guide the dasher into the freezing cylinder, taking care
not to damage the seal assembly. Turn dasher shaft until it engages the square
drive coupling. Slide the dasher back into the cylinder so that the two smooth
sealing surfaces meet. (see Figure U)
7. Inspect and lightly lubricate the large square o-ring and refit it into the back of the
valve block assembly. Install the valve assembly on the front studs and tighten the
knobs until they are finger tight. Use a cross tightening pattern. Do not use tools
to tighten knobs.
NOTE: Failure to lightly lubricate the large o-ring before installing into the valve block
can result in product leakage.
Figure Q Clean Valve Body
Figure P Carb Tube
Figure R Re-assemble rotary
portion of seal as shown
Figure S Installing the
stationary portion seal
Figure T Seal Assembly
installed correctly
Figure U Dasher Assembly
Page 10 Crathco®Remote Beverage Freezers
Sanitizing and Refilling
1. Re-assemble carburetor assembly by installing the two “O” Rings at the bottom of
the carb tube.
2. Place the carburetor assembly in the bottom of the hopper.
3. Install the “O” Rings on valve plunger and lay plunger assembly on a clean piece
of paper towel.
4. Prepare a minimum of 2.5 gallons (9.5 liters) of sanitizing solution (Kay-5
Sanitizer/Cleaner or equivalent) following the manufacturer’s instructions.
NOTE: Add 1 ounce of Kay-5 to 2.5 gallons (9.5 liters) of 120ºF (50ºC) water to achieve
a concentration of 100 parts per million.
5. Dip a medium sized brush into the sanitizing solution and sanitize the inside bore
of the dispensing valve (figure V).
6. Place a small amount of lubricant onto a piece of clean paper toweling (figure W).
Use a clean piece of paper toweling to pick up the small end of the valve plunger
assembly. Apply a thin film of lubricant from the other piece of paper toweling to
the “O” Rings on the valve plunger assembly (figure W).
7. Slide the valve plunger spring over the small end of the valve plunger and, using
another clean piece of paper toweling, pick up the valve plunger at the outlet end
and insert plunger and spring into the valve body (figure X).
8. Push up on the valve plunger and insert the stainless steel handle (figure Y).
9. Holding the handle down slightly so that the hole in the handle and valve block
are aligned, insert the dispensing valve handle retaining pin (figure Z).
10. Pour sanitizing solution into the mix storage hopper and allow the solution to fill
freezing cylinder. Use a large brush to sanitize all hopper surfaces (figure AA).
11. Turn panel switch to “CLEAN” and allow freezer to run for 10 minutes.
12. Open dispensing valve and drain solution. Allow the dasher to push remaining
sanitizer out of the freezing cylinder. Once the sanitizing solution is drained,
turn panel switch to “OFF”.
13. Place a small amount of sanitary lubricant onto another piece of clean paper
toweling. Use a clean piece of paper toweling to pick up the large end of the
carburetor from the bottom of the hopper taking care not to touch the sanitized
carburetor with your bare hand. Apply the lubricant on the other piece of paper
toweling to the two “O” rings on the bottom of the carburetor assembly.
14. Place the lubricated carburetor assembly on a clean piece of paper toweling.
15. Prepare fresh product according to manufacturer’s instructions.
16. Hold open the dispensing valve, and pour product (approx. 10 oz.) into the
hopper to allow this product to chase out any remaining sanitizer. Watch the
product flowing out of the dispensing valve and close the valve when the new
mix has purged the sanitizer remaining in the cylinder.
17. Fill mix storage hopper with fresh product.
18. Use a clean piece of paper toweling to insert the sanitized carburetor assembly
into the inlet hole in the hopper. Cover hopper with hopper lid.
19. Turn front panel switch to “ON”. Allow freezer to reach proper consistency.
Figure V Sanitize Valve Body
Figure W Lubricate Plunger
Figure X Installing Plunger and Spring
Figure Z Insert Retaining Pin
Figure Y Insert Valve Handle
Figure AA Sanitize Hopper
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