Electrofreeze 88RMT Service Manual

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H.C. Duke & Son, Inc. P/N 184950 July 2007 Printed In U.S.A.

184950

Operator’s Manual

with Illustrated Parts List

FREEDOM

Series

Soft Serve Twist Freezer

Model 88T-RMT

P/N 184950 7/07

360

º

Operator’s Manual

for

Electro Freeze Freedom 360° Series

Soft Serve Twist Freezer

Model 88T-RMT

184950

i

5

ELECTRO FREEZE Soft Serve Model 88T-RMT

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Follow these four steps to safety ....

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1. Recognize Safety Information ....Look for this

safety alert symbol throughout this manual.

2. Understand Signal Words ....

DANGER

WARNING

CAUTION

SAFETY FIRST!

When you see this symbol on your freezer or in this manual, be alert to the potential for personal injury. Follow recommended precautions and safe operating practices.

The signal words — DANGER, WARNING and CAUTION — are used with the safety alert symbol (DANGER decals on the freezer may or may not have the safety alert symbol, but the message is the same). Decals with the words DANGER, WARNING or CAUTION appear on the freezer. DANGER identifies the most serious hazard. Decals with the words DANGER or WARNING are typically near specific hazards on the freezer. General precautions are listed on CAUTION safety decals. In this manual, CAUTION messages with the safety alert sym-

bol call attention to safety messages.

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3. Follow Safety Instructions ....

4. Operate Safely ....

184950

ELECTRO FREEZE Soft Serve Model 88T-RMT

SAFETY FIRST!

Read and understand all safety messages in this

Safety First!

manual. Read and understand the decal safety messages on your freezer. Take notice of the location of all decals on the freezer and keep the safety decals in good condition. Check them periodically and replace missing, damaged or illegible safety decals. The safety decals must remain in place and legible for the life of the freezer. If you need new decals, use the information and illustrations on pages iv and v of this manual to identify the decals and order replacements.

DO NOT attempt to operate the freezer until you read and understand all safety messages and the operating instructions in this manual.

DO NOT allow untrained personnel to maintain or service this machine. Failure to follow this instruction may result in severe personal injury. DO NOT operate the freezer unless all service panels and access doors are secured with screws. DO NOT attempt to repair the freezer until the main power supply has been disconnected. Some freezers have more than one disconnect switch. Contact your local Electro Freeze Distributor for authorized service.

iii

5

ELECTRO FREEZE Soft Serve Model 88T-RMT

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Safety Decal Locations

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Do not attempt to operate the freezer until all safety precautions and operating instructions in this manual are read and understood.

Take notice of all warning, caution, instruction and information decals (or labels) on the freezer as shown in the figure to the right. The labels have been put there to help maintain a safe working environment.

The labels have been designed to withstand washing and cleaning. All labels must remain legible for the life of the freezer. Check labels periodically to be sure they can be recognized as warning labels.

If it is necessary to replace any label, please contact your local authorized Electro Freeze Distributor or H. C. Duke & Son, Inc. When ready to order, you will need to determine the (1) part number, (2) type of label, (3) location of label, and (4) quantity required, and include a return shipping address.

No. Part No. Description (Qty)

1 HC165025 Decal — Beater Warning (1) 2 HC165126 Decal — Panel Removal Warning (3) 3 HC165246 Decal — Pressurized System Warning (1) 4 HC165048 Decal — Warning Rotating Parts (2)

iv

You may contact your local authorized Electro Freeze Distributor, as follows

: Name: Address:

Phone: or —for factory service assistance —

contact H. C. Duke & Son, Inc., Electro Freeze Service Department by phone, fax or e-mail:

Phone: (309) 755-4553



(800) 755-4545 FAX: (309) 755-9858 E-mail: Service@hcduke.com

(The decals on the next page are numbered 1, 2, 3, and 4. Those numbers correspond to the numbers in the table below. The table provides the part number, description, and quantity for each decal.)

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ELECTRO FREEZE Soft Serve Model 88T-RMT

Safety Decal Locations

Hazardous rotating beater shaft. Do not operate unit with dispense head removed

Before removing dispense head:

1. Turn all control switches to "OFF", and

2. Disconnect all power supplies. Unit may have more than one power supply.

INSIDE CABINET

4

P/N HC165048

Pressurized system. Depressurize unit before dismantling mix transfer system.

P/N HC165246

3

.

2

P/N HC165126

P/N HC165025

1

!

WARNING

Hazardous moving parts. Machine starts automatically. Do not oper ate with pane l removed.

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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Safety First .................................................................................... ii

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Safety Decal Locations .................................................................. iv

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1 Introduction .................................................................... 1

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2 Note to Installer ............................................................... 1

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3 Specifications .................................................................. 4

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4 Part Names and Functions ........................................... 6

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5 Operator Controls and Indicators ................................ 10

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2.1 Uncrating and Inspection ............................................. 2

2.2 Installation ................................................................... 2

2.3 Electrical Requirements............................................... 3

2.4 Electrical Connections ................................................. 3

3.1 Particulars ................................................................... 4

3.2 Data Plate .................................................................... 4

3.3 Reference Information.................................................. 5

3.4 Installation Date ........................................................... 5

3.5 Dimensions .................................................................. 5

5.1 Selector Switch............................................................ 10

5.2 Day–Night Switch......................................................... 11

5.3 Mix Transfer System (MTS) Switch................................ 11

5.4 Cabinet Switch............................................................. 11

5.5 Timer ........................................................................... 11

5.6 Reset — Overload ........................................................ 12

5.7 Indicator Light — “ADD MIX” ........................................ 12

5.8 Probe — “ADD MIX” ...................................................... 13

5.9 Thermometer — Cabinet .............................................. 13

2 Note to Installer

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The Model 88T-RMT Freezer is designed to produce soft serve ice cream, ice milk, yogurt, and similar frozen dairy products, with a product serving temperature range of 15 to 25°F (-9 to -4°C). If such products are prepared from powdered concentrate, they should be precooled to 40ºF (4°C) prior to introduction to the freezer. Use of other products in this machine is considered misuse (see Warranty).

This manual has been prepared to assist

Make sure all personnel responsible for equipment operation completely read and understand this manual before operating the freezer. When properly operated and maintained, the freezer will produce a consistent quality product.

If you require technical assistance, please contact your local authorized Electro Freeze Distributor as follows:

Name __________________________ Address: _______________________

you in the proper operation and general maintenance of the Electro Freeze Soft Serve Model 88T-RMT.

Your freezer will not compensate for or correct any assembly or priming errors made during the initial start-up; therefore, it is important to follow the assembly and priming procedures detailed in this manual.

_________________________ Phone: _________________________ For factory service assistance — contact

H. C. Duke & Son, Inc., Electro Freeze Service Department as follows:

Phone: (309) 755-4553



(800) 755-4545 FAX: (309) 755-9858 E-mail: Service@hcduke.com

This freezer must be installed and serviced by an Electro Freeze Distributor or authorized service technician in accordance with the installation instructions.

After installation, the warranty registration card must be completed and returned to validate the warranty.

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2.1 Uncrating and Inspection

2.2 Installation

Figure 2-1 Machine Bolted to Shipping Base

When the unit is received and while the carrier is still present, inspect the shipping carton for any damage that may have occurred in transit. If the SHOCKWATCH® label indicates red and/or the carton is broken, torn, or

Figure 2-2 Installing Mounting Legs or Casters

All materials and connections must conform to local requirements and be in compliance with the National Electrical Code (NEC).

CAUTION Be sure to properly support the machine when removing bolts and installing legs or casters.

CAUTION

punctured, note the damage on the carrier’s freight bill and notify the carrier’s local agent immediately.

1. Remove the carton from the pallet, and move the machine as close as possible to the permanent location.

2. Remove the shipping bolts on the bottom of the freezer (figure 2-1) and install either the legs or casters (figure 2-2).

NOTE: Screw casters or legs all the way in coupling, then adjust out to level side to side with 1/4” slope to the front.

1. This freezer is designed for indoor use and must be protected from outdoor weather conditions.

– continued

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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2.2 Installation (continued)

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2.3 Electrical Requirements

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2.4 Electrical Connections

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2. Where codes permit, Electro Freeze recommends that the freezer be installed on casters and have flexible water and electrical connections for easier service and cleaning.

3. All freezers require a minimum 6 inch (15 cm) clearance on either the side panels or the rear panel for adequate ventilation. Freezers designed with top air discharge require that at least 18 inches (45 cm) above the top panel be free of obstructions. Anything blocking ventilation of the freezer (including cone dispensers) will reduce the efficiency of the freezer.

CAUTION To prevent accidental electrical shock, a positive earth ground is required.

1. Always verify electrical specifications on the data plate of each freezer. Data plate specifications will always supersede the information in this manual.

CAUTION T o prevent accidental electrical shock, a positive earth ground is required.

1. Check the data plate for fuse size, wire ampacity and electrical specifications.

2. Refer to the wiring diagram provided for proper power connections.

4. Water cooled models will require a 3/8 inch MPT water inlet and water waste connection. The connections are found on the bottom under the compressor mounting area and are clearly tagged “Water Inlet” and “Water Waste.” A manual shut-off valve should be installed in the water inlet line at the time of installation. The water pressure must be between 35-140 psig (241-965 kPa) for proper operation.

5. Place the freezer in the final location and level by adjusting the legs or casters so that it is level side-to-side and the front is approximately ¼ inch (6 mm) lower than the rear to allow proper drainage of the freezing cylinder.

2. Supply voltage must be within +

10% of voltage indicated on the nameplate. Also, on three-phase systems, voltage between phases must be balanced within 2%. (More than a 6 volt difference between any two voltage measurements at 208-230 volts indicates a possible imbalance.) Request your local power company to correct any voltage problem.

3. An easily accessible main power

disconnect must be provided for all poles of the wiring to the freezer.

3. Electrical connections are made in the junction box located mid-level behind the left side panel.

4. Use a flexible connection when permissible. All materials and connections must conform to local codes and/or the National Electric Code.

5. For 3 phase freezers, beater shaft rotation must be clockwise as viewed from the front of the freezer.

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3 Specifications

3.1 Particulars

3.2 Data Plate

Always check and verify voltage and amperage on the data plate located on the back panel of each freezer.

88T-RMT

Width (in/cm) 24/61 Height (in/cm) 68/173 Depth (in/cm) 30.5/77.5 Weight (lbs/kg) 680/308 Compressor* 2 HP/12000 BTUH

Beater Motor 2 HP/1.5 kw Refrigerant 404a Charge 3.75 lb/1.7 kg Mix Container (2) 20 Qts/18.9 Liters Cylinder (2) 3 Qts/2.8 Liters

*Contact factory for other voltages

Figure 3-1

1.5 kw (Motor)

3.8 kw (Cooling)

The data plate provides important information that the operator should record and have available for parts ordering, warranty and service requests.

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3.3 Reference Information

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3.4 Installation Date

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3.5 Dimensions

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Write in Reference Informa-

1 Model Number: ________________

tion HERE!



Fill in this information as soon as you receive the Electro Freeze 88T-RMT Soft Serve Twist Freezer. The item numbers, encircled, correspond with the callout numbers in figure 3-1.

Fill in the date of installation, and the name, address, and phone number of the installer in the space provided below. This information will be needed when ordering parts or service for the 88T-RMT Freezer.

Date of installation: __________________________________

Installed by: __________________________________

Address: __________________________________

__________________________________

Phone: __________________________________

Figure 3-2

2 Serial Number: ________________ 3 Electrical Spec: Voltage _________

Phase _______ Hertz __________ 4 Maximum Fuse Size: ____________ 5 Minimum Circuit Ampacity: _______

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4 Part Names and Functions

Figure 4-1 Head Assembly

1 HEAD

Encloses the freezing cylinder and provides an opening for product to be dispensed.

2 BUSHING - HEAD

Holds the beater in place at the front of the cylinder. Must lubricate center of bushing.

3 O-RING - HEAD

Seals the head to the freezing cylinder. Must be lubricated.

4 PLUNGER

Seals the product opening in the dispense head when closed. Allows product to flow when open.

5 O-RING - PLUNGER

Seals the plunger in the head. Must be lubricated to seal and slide properly.

6 ROD - PLUNGER

Starts the freezer when dispensing. Must be in place before freezer will operate.

BLEED

7 PLUG - AIR BLEED

Seals the air bleed opening in the dispense head when closed. Allows excess air to be removed from the cylinder in the filling process.

8 O-RING - PLUG

Seals the air bleed plug in the dispense head.

9 PIN - HANDLE

Secures the handle to the dispense head.

10 KNOB - HAND

Secures the dispense head to the freezing cylinder.

11 HANDLE - DISPENSE

Opens and closes the plunger to start and stop the flow of product from the freezer.

12 NOZZLE

Forms the frozen product as it is dispensed.

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4 Part Names and Functions (continued)

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Figure 4-2 Beater Shaft Assembly

1 SHAFT - BEATER

2 BLADE - SCRAPER FRONT

3 BLADE - SCRAPER REAR

4 SEAL - ASSY. SHAFT

4A SEAL - BEATER SHAFT

4B WASHER - SHAFT SEAL

4C O-RING - SEAL

BLADE-SCRAPER

Rotates in the freezing cylinder, blending air and ejecting product.

Scrapes the frozen product from the freezing cylinder.

Seals the opening between the freezing cylinder and the beater shaft. Consists of the following 4A, 4B, and 4C.

(CUP SEAL)

(BUSHING)

SHAFT-BEATER

BLADE-SCRAPER

5 BUSHING - DISPENSE HEAD

Holds the beater in place at the front of the cylinder. Must lubricate center of bushing.

SEAL-ASSY. SHAFT

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8

4 Part Names and Functions (continued)

Figure 4-3 Mix Transfer System (MTS)

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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4 Part Names and Functions (continued)

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1 SUPPORT-ROLLER BEARING

Holds roller assembly in place.

2 SHOE-ROLLER

Provides an opening to insert the mix transer hose. Squeezes transfer hose against rollers.

3 ROLLER ASSEMBLY COMPLETE

Squeezes mix/air through tubing to freezing cylinder.

4 KNOB-HAND

Locks roller shoe in positon.

5 CLAMP-SHOE

Swings hand knob into position over roller shoe.

6 RETAINER-AIR TUBE

Holds air meter tube in the “up” position.

7 AIR METER

Regulates the amount of air being drawn into the system.

8 TUBE-AIR

Provides connection for the air meter.

9 CLAMP-ASSY. SOFT HOSE 5/8"

Prevents mating parts from leaking.

10 HOSE-ASSY. MIX BRAIDED

Connecting hose between the Mix Transfer System and the cylinder inlet.

11 COVER-MTS

Protection against moving parts. Cover must be in place for the MTS to operate.

12 HOSE-TRANSFER RED

Special “red-lined” hose that is squeezed by rollers to transfer mix to freezer.

13 TUBE-ASSEMBLY MIX INLET

Carries mix from mix container to MTS.

14 DUCKBILL

A rubber check valve that prevents mix from falling back into the mix container.

15 PORT-AIR/MIX

Blends air and mix as it flows into the transfer hose.

16 CLIP-TUBE RETAINER

Locks mix pickup tube into air/mix port.

17 O-RING

Seals the mix tube in the air/mix port.

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5 Operator Controls and Indicators

5.1 Selector Switch 1

Figure 5-1

The following paragraphs describe the operator controls and indicators. Refer to figure 5-1 for location of these controls and indicators on the freezer.

NOTE: The head must be in place before the beater will operate.

This three-position switch controls the operating mode of your freezer.

a. "CLEAN" (left) — This position operates the beater only (no refrigeration to the cylinder). This position must be used in all cleaning and sanitizing operations.

b. "OFF" (center) — In this position the beater motor and refrigeration system will not operate.

CAUTION Test operation of the head switch prior to placing the freezer in service. See Section 11, Routine Maintenance, Monthly.

 Important: Do not use the "AUTO" position with water or sanitizer in the cylinder — the freezer will be damaged.

c. "AUTO" (right) — This position activates both the beater motor and the refrigeration unit. This is the normal operating position.

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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5 Operator Controls and Indicators (continued)

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5.2 DAY-NIGHT Switch 2

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5.3 Mix Transfer System (MTS) Switch 3

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5.4 Cabinet Switch 4

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5.5 Timer 5

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This two-position switch controls the day and night refrigeration modes.

a. "DAY" (left) — The temperature thermostat controls the system refrigeration to maintain the product serving temperature between 18 to 21°F (-8 to 6°C). This is the normal operating position.

This two-position switch controls the operation of the MTS located in the refrigerated mix storage cabinet.

a. "MIX ON" (left) — This position is the normal operating mode. This position is for priming the cylinder, cleaning, and day operation.

This two-position switch controls the cabinet refrigeration.

NOTE: Cabinet door must be closed for cabinet refrigeration to operate.

a. "ON" (left) — The cabinet thermostat controls the system refrigeration to maintain a mix temperature of 36 to 41°F (2 to 5°C) in the storage cabinet. Use this position when mix is in the storage cabinet but not in the cylinder.

This control will bypass the thermostat, forcing the compressor and beater motor to run up to 3 minutes. Use the timer for for quick start-ups or fast recovery when dispensing large portions.

b. "NIGHT" (right) — The mediumtemperature thermostat controls the system refrigeration to maintain a mix holding temperature of 40°F (4ºC) or below.

b. "OFF" (right) — In this position the MTS will not operate. Use this position for night operation.

b."OFF" (right) — In this position

the cabinet will not be refrigerated.

NOTE: The cabinet is automatically "ON" when either SELECTOR switch is in the"AUTO" position.

 Important: Excessive use of the timer causes freeze-up and damage to the freezer.

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5 Operator Controls and Indicators (continued)

5.6 Reset — Overload 6

5.7 Indicator Light — “ADD MIX”

Figure 5-1

This control protects the beater motor against failure from an overload condition by automatically shutting down the freezer. To restart the freezer properly, turn the SELECTOR switch to “OFF” and wait 2-3 minutes. Then depress the red reset button and turn the SELECTOR switch back to the “AUTO” or “CLEAN” position.

When flashing, this light indicates the mix in the mix container is at a low level and should be refilled as soon as possible. Always maintain at least 2 inches (5 cm) of mix in the tank. For best operating results keep mix tank full.

 Important: If the overload trips frequently, your freezer should be checked for proper product temperature, overrun and voltage. Contact your Electro Freeze Distributor.

7 7

7

7 7

 Important: If proper mix level is not maintained, a freeze-up may occur and cause damage to the freezer.

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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5 Operator Controls and Indicators (continued)

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5.8 Probe - “ADD MIX” (See Figure 5-2)

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5.9 Thermometer - Cabinet

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(See Figure 5-2)

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For the “ADD MIX” indicator light to indicate low mix, the must be installed in the mix tank, with cord attached and plugged into the receptacle located in the back of the cabinet wall.

This thermometer is used to monitor the temperature in the mix cabinet. When the cabinet switch is in the “ON” position, the thermometer should be green which indicates the temperature is between 35º to 41ºF (2º to 5ºC). If the thermometer is indicating red or blue and the cabinet switch is “ON” contact your authorized service company for service.

Figure 5-2

This chart shows the correct positions of the switches for day and night operations. This decal is located on the dispensing panel.

To turn the entire machine off, switches numbered 1, 3, and 4 must be in the “OFF” position.

THERMOMETER

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6 Disassembly and Cleaning

Safety Information

This freezer uses pressure to assure consistent product quality. It is important for your safety that the freezer is depressurized slowly and completely whenever the freezer is to be drained, disassembled, cleaned, or serviced. The safety instructions in this manual will remind you when to check to make sure the freezer is depressurized. When you see this CAUTION statement

CAUTION Make sure freezer is depressurized before proceeding.

the following steps should be taken:

1. Make sure both MTS switches and both selector switches are in the “OFF” position.

2. Place a clean bucket under the dispense head.

3. Slowly open the plungers by pulling down on each of the dispense handles, allowing any pressurized cleaning solution or air to escape. If there is product in the freezer refer to Section 9, Closing Procedures, 9.2 Draining Product.

4. Remove the plunger rods and open the plungers completely.

CAUTION To avoid electrical shock or contact with moving parts, make sure all switches are in the “OFF” position and that the main power supply is disconnected. Some freezers have more than one disconnect switch.

5. Inside the cabinet, remove the MTS cover, loosen the shoe clamp hand knob, swing back the shoe clamp and swing open the roller shoe on both mix transfer systems.

Following these steps will assure that the system is depressurized.

It is important that the freezer be disassembled, washed, lubricated and sanitized before operation.

The cleaning and sanitizing instructions explained in this manual are required to maintain a clean, sanitary freezer. The freezer should be disassembled, cleaned, reassembled, lubricated and sanitized daily to ensure the best possible product quality and freezer operation.

Persons assembling, cleaning or sanitizing the freezer must first wash and sanitize hands and forearms with an approved sanitizer.

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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6.1 Cleaning Accessories

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HC158018 BRUSH -7/16” DIA x 12” OAL

3

4

HC158026 BRUSH -1” DIA x 12” LG.

5

HC158037 BRUSH -1/4” DIA x 18-1/2” LG.

The following accessories shipped with the freezer are necessary for cleaning, sanitizing, and disassembly/assembly:

1 BRUSH - Cylinder, 4 inch diameter

with 36 inch handle: used to clean the cylinder.

5 BRUSH - 1/4 inch diameter with an

overall length of 18-1/2 inches: used to clean the air meter hose, the small hole in the back of the dispense head

2 BRUSH - 9/16 inch diameter with an

and small parts. overall length of 30 inches: used to clean the drain tube, the mix feed tube in the ceiling of the cabinet, and the pickup tube.

3 BRUSH - 7/16 inch diameter with an

overall length of 12 inches: used to

6 TOOL - O-RING REMOVAL: aids in

removing o-rings from the spigot,

head, air bleed plug, and shaft seal.

7 LUBRICANT - Petrol Gel: approved

lubricant for moving parts and o-rings. clean the transfer hose, the braided

hose and the air bleed opening in the dispense head.

8 KIT - O-RING: contains all o-rings

and seals needing replacement on a

regular basis. (not shown)

4 BRUSH - 1 inch diameter with an

overall length of 12 inches: used to clean the plunger opening in the dispense head. Also use to clean the disassembled shaft seal and the head bushing.

1

HC158004 BRUSH -4” DIA x 36” HANDLE

2

HC158019 BRUSH -9/16” DIA x 30” OAL

HC169374 TOOL -O RING

6

REMOVAL

HC158000A

7

LUBRICANTPETROL GEL

8

HC196103 BOTTLEWASH 500ml

Figure 6-1

See Replacement Parts section of manual, Accessories, for additional part numbers.

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6.2 Disassembly Instructions

Figure 6-2 Head Assembly

BLEED

CAUTION T o avoid electrical shock or contact with moving parts, make sure all switches are in the “OFF” position and that the main power supply is disconnected. Some freezers have more than one disconnect switch.

CAUTION Make sure freezer is depressurized before proceeding.

CAUTION T o prevent bacteria growth, remove ALL O-rings when disassembling for cleaning. Failure to do so could create a health hazard.

1. If there is product in the freezer,

refer to Section 9, Closing Procedures,

9.2 Draining Product.

2. Remove the plunger rods (6, figure 6-2) by lifting up and swinging the bottom out and down. Remove hand knobs (10) and pull the dispensing head (1) straight out.

3. Remove the head bushings and beater shafts from the cylinders.

4. Remove scraper blades and shaft seals from the beater shafts.

5. Remove the drip tray (see Replacement Parts Manual - Panel Assembly) and drip tray insert from the front of the freezer.

6. Remove the air bleed plugs (7, figure 6-2) and remove the two O-rings (8) on each plug. (See figure 6-2)

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6.2 Disassembly Instructions (continued)

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Figure 6-4 MTS Figure 6-5 MTS Hose Assembly

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Figure 6-3 Shaft Seal

7. Remove the handle pin (9), handles (11), plungers (4) and nozzles (12) from the dispense head.

8. Remove O-rings (3) from the dispense head and O-rings (5) from the plungers (4).

9. Remove the cup seals (figure 6-3) and O-rings from the plastic washers on the shaft seal assemblies.

10. Remove mix tanks, covers and low mix probes.

O-RING

WASHER

CUP SEAL

11. Remove MTS cover.

12. Remove MTS hose assemblies from the Mix Transfer Systems as follows (figure 6-4):

a. loosen the hand knob, b. swing back the shoe clamp, c. swing open the roller shoe, d. loosen the clamp on braided

hose,

e. pull tube off cylinder inlet and slide hose assembly out of roller support housing.

13. Disassemble MTS hose

assembiles as shown in figure 6-5.

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18

6.3 Cleaning Instructions

The cleaning instructions explained in this section are procedures to remove bacteria and maintain a clean, sanitary freezer. The freezer must be disassembled, washed, and sanitized according to the instructions in this manual. Always sanitize before start-up to ensure the best possible cleanliness.

CAUTION Electrical shock hazard. Do not splash water on switches or allow water to flow onto electrical components inside the machine.

NOTE: It is your responsibility to be

aware of, and conform to, the requirements for meeting all federal, state, and local laws concerning the frequency of cleaning and sanitizing the freezer.

1. Prepare a three-compartment sink for cleaning, rinsing, and sanitizing parts removed from the freezer, per applicable local health codes. Also prepare a clean surface to air-dry all parts.

Figure 6-6 Clean head ports and openings with brush.

CAUTION T o prevent bacteria growth, remove all O-rings when cleaning. Failure to do so could create a health

 Important: Do not use unapproved sanitizer or laundry bleach. These materials may contain high concentrations of chlorine and will chemically attack freezer components.

NOTE: The sanitizer should be mixed according to the manufacturer’s instructions to yield 100PPM available chlorine solution (example: Stera-Sheen Green Label.) Use warm water (100° to 110°F or 38° to 43°C) to wash, rinse, and sanitize.

2. Wash all parts removed from the freezer thoroughly with dish detergent. Clean the following parts with the appropriate supplied brush:

a. The mix tank, pickup tube

assemblies, hoses, and probes.

— continued

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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184950

6.3 Cleaning Instructions (continued)

b. The head plunger openings, center plunger ports, O-ring grooves, dispense nozzle mounting rings, and mix ports, as shown in figure 6-6.

c. The shaft cup seals, washers, and O-rings, plunger O-ring grooves and nozzles, as shown in figure 6-7.

d. The air bleed plug O-ring grooves.

e. The beater shaft and the scraper blade pin holes as shown in figure 6-8.

ÖImportant: Do not leave parts in sanitizer for more than 15 minutes.

3. After all parts are washed, rinse and then place them in the sanitizer solution. Brush the inside of all mix transfer hoses with sanitizer. For proper sanitizing, the parts must remain fully immersed in the sanitizer for 5 minutes. Allow parts to air-dry after sanitizing.

4. Using a warm dish detergent solution thoroughly brush; the mix feed tubes from the refrigerated cabinet to the cylinders as shown in figure 6-9, the inside of the cylinders including the back wall, and the inside of the drain tube, as shown in figure 6-10. Repeat with sanitizing solution and rinse with clear water.

5. Remove the drip tray and insert. Wash in a warm dish detergent solution and rinse with clear water.

6. Wash the outside of the freezer and inside of the cabinet with a warm dish detergent solution. Rinse with clear water.

Replace worn brushes. Use

only Electro Freeze original

or authorized replacement

parts. See Accessories

parts list in Part II of this

Manual to order new

brushes.

Figure 6-7

and nozzle with brush.

Figure 6-8

Figure 6-9

Figure 6-10

Clean O-ring grooves, seal

Clean beater shaft pin holes.

Brush inside of cylinder mix

feed tubes.

Brush inside of drain tube

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6.3.1 Cleaning and Lubricating MTS Assembly

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NOTE: Clean the shoe weekly or when necessary . Do not interchange the

shoe with any other MTS shoes.

1. Remove the O-rings and slide the shoe off of the pivot arm and the swing clamp off of the clamp arm. See figure 6-11.

2. Carry to the sink, wash in mild detergent with the brush provided and dry thoroughly.

3. Brush in between rollers. Flush clean with water bottle.

Figure 6-11

Do not let shoe sit in sanitizing solution or water. Corrosion will occur in bore.

4. Lubricate the shoe pivot arm and the swing clamp arm with food grade lubricant such as Petrol-Gel.

5. Reassemble the shoe and O-ring on pivot arm.

6. Reassemble the shoe swing clamp and O-ring on the swing clamp arm.



Important:

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ELECTRO FREEZE Soft Serve Model 88T-RMT

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7 Assembly

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184950

Figure 7-1 Shaft Seal Assembly

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Figure 7-3 Scraper Blade Installation

O-RING

WASHER

CUP SEAL

Correct assembly of the freezer is essential to prevent leakage of the product and damage to the freezer. To assemble the freezer you will need an approved lubricant (such as Petrol-Gel). Make sure all parts of the assemblies have been washed and sanitized before assembling. Follow these directions for each cylinder of the freezer.

CAUTION T o avoid electrical shock or contact with moving parts, make sure all switches are in the “OFF” position and that the main power supply is disconnected. Some freezers have more than one disconnect switch.

1. Persons assembling the freezer must first wash and sanitize their hands and forearms with an approved sanitizer.

2. To assemble the shaft seal, install the cup seal and O-ring on the bushing (see figure 7-1). Apply a light amount of approved sanitary lubricant (such as Petrol-Gel) to the O-ring and the face of the plastic washer opposite the bell portion of the seal. Do not allow any lubricant to come into contact with the bell-shaped rubber portion of the seals.

3. Install the shaft seal over the rear of the beater shaft, with the bellshaped portion facing the rear, as shown in figure 7-2.

4. Place the scraper blades on the beater shaft, making sure the blades are installed properly (see figure 7-3).

5. Install the assembled beater shaft into the cylinder by placing the rear blade on the bottom of the cylinder. This will center the beater and allow alignment with the drive coupling. Rotate the beater assembly while pushing, until the shank has engaged the coupling. Repeat for second cylinder assembly.

-continued

21

Electrofreeze 88RMT Service Manual

Safety Decal Locations

Table of Contents

2 Note to Installer

2.2 Installation

2.3 Electrical Requirements

2.4 Electrical Connections

3 Specifications

3.1 Particulars

3.2 Data Plate

3.3 Reference Information

3.4 Installation Date

3.5 Dimensions

Safety Information

6.1 Cleaning Accessories

6.2 Disassembly Instructions

6.3 Cleaning Instructions

7 Assembly