INSTALLATION & OPERATIONS MANUAL

FOR

ICE CREAM HARDENING CABINETS

Models: NXBF27MMS/4 and NXBF48MMS/4

11/11 Rev. A 143589

TABLE OF CONTENTS

INTRODUCTION

STORE CONDITIONS

WARNING LABELS AND SAFETY INSTRUCTIONS

PRE-INSTALLATION INSTRUCTIONS

Inspection for Shipping Damage

INSTALLATION INSTRUCTIONS

Mechanical

Electrical

Low Temperature Freezers

Leg and Condensate Pan Installation

SERVICE INSTRUCTIONS

TEMPERATURE SENSOR, DEFROST HEATER AND FAN MOTOR REPLACEMENT

DIXELL (XR60C) ELECTRONIC REFRIGERATION CONTROL

FINAL CHECK LIST

SENSOR PROBE

SENSOR TEMPERATURE AND RESISTANCE

CABINET & COMPONENT AMP DRAW

ACCESSORIES

PART LIST

SALE AND DISPOSAL

WIRING DIAGRAMS

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6

6

6-7

7

8-9

10

10

3

3

4

5

5

5

5

5-6

10

11

11

12

12

13

INTRODUCTION

This manual contains important instructions for installing, using, and servicing a Ice Cream Hardening cabinets case. A parts list is included with this manual. Read all these documents carefully before installing or servicing your equipment.

STORE CONDITIONS

The Ice Cream Hardening cabinet cases are designed to operate in the controlled environment of an air-conditioned store. The store temperature should be at or below 75

°F and a relative humidity of 55% or less. At higher temperature or humidity conditions, the performance of these cases may be affected and the capacity diminished.

The Ice Cream Hardening cabinets should not be positioned where it is directly exposed to rays of sun or near a direct source of radiant heat or airflow. This will adversely affect the case and will result in poor performance.

If this case is to be located against a wall, there should be at least 4” space between the wall and the back of the case.

This space will allow for the circulation of air behind the case, which will prevent condensation on the exterior surfaces.

NOTICE

Read this manual before installing your cabinet. Keep the manual and refer to it before doing any service on the equipment. Failure to do so could result in personal injury or damage to the cabinet.

DANGER

Improper or faulty hook-up of electrical components on the refrigeration units can result in severe injury or death.

All electrical wiring hook-ups must be done in accordance with all applicable local, regional or national standards.

NOTICE

Installation and service of the refrigeration and electrical components of the cabinet must be performed by a refrigeration mechanic and/or a licensed electrician.

The portions of this manual covering refrigeration and electrical components contain technical instructions intended only for persons qualified to perform refrigeration and electrical work.

This manual cannot cover every installation, use or service situation. If you need additional information have the serial number at hand and call Customer Service Department.

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WARNING LABELS AND SAFETY INSTRUCTIONS

This symbol is the safety-alert symbol. When you see this symbol on your cabinet or in this manual, be alert to the potential for personal injury or damage to your equipment.

Be sure you understand all safety messages and always follow recommended precautions and safe operating practices.

NOTICE TO EMPLOYERS

You must make sure that everyone who installs, uses or services your cabinet is thoroughly familiar with all safety information and procedures.

Important safety information is presented in this section and throughout the manual. The following signal words are used in the warnings and safety messages:

DANGER:

Severe injury or death will occur if you ignore the message.

WARNING:

Severe injury or death can occur if you ignore the message.

CAUTION:

Minor injury or damage to your cabinet can occur if you ignore the message.

NOTICE:

This is important installation, operation or service information. If you ignore the message, you may damage your cabinet.

The warning and safety labels shown throughout this manual are placed on your Ice Cream Dipping case at the factory. Follow all warning label instructions. If any warning or safety labels become lost or damaged, call your customer service department for replacements

CAUTION!

GROUND REQUIRED

FOR SAFE OPERATION

This label is located on top of the electrical control

This label is attached to the cabinet power cord on models with a power cord.

label and on the wiring channel.

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11/11 Rev. A 143589

PRE-INSTALLATION INSTRUCTIONS

INSPECTION FOR SHIPPING DAMAGE

You are responsible for filing all freight claims with the delivering truck line. Inspect all cartons and crates for damage as soon as they arrive. If damage is noted to shipping crates or cartons or if a shortage is found, note this on the bill of lading (all copies) prior to signing.

If damage is discovered when the cabinet is uncrated, immediately call the delivering truck line and follow up the call with a written report indicating concealed damage to your shipment. Ask for an immediate inspection of your concealed damage item. Crating material must be retained to show the inspector from the truck line.

INSTALLATION INSTRUCTIONS

GENERAL INSTRUCTIONS

Be sure the equipment is properly installed by competent service people.

Keep the equipment clean and sanitary so it will meet your local sanitation codes. Clean the cabinet with a mild detergent and water, then rinse.

Rotate your stock so that older stock does not accumulate. This is especially important for ice cream. A "First-In,

First-Out" rotation practice will keep the products in good salable condition.

Do not place product in the case when it is soft or partially thawed. Also, product should not be put in the case for at least 6 hours after it is started.

Stock cases as quickly as possible, exposing only small quantities to store temperatures for short periods of time.

NOTICE TO STORE OWNERS / MANAGERS

Moisture or liquid around or under the cabinet is a potential slip/fall hazard for persons walking by or working in the general area of the cabinet. Any cabinet malfunction or housekeeping problem that creates a slip/fall hazard around or under the cabinet should be corrected immediately.

If moisture or liquid is observed around or under a Ice Cream Hardening Cabinet, an immediate investigation should be made by qualified personnel to determine the source of the moisture or liquid. The investigation should determine if the cabinet is malfunctioning or if there is a drainpipe leaking.

MECHANICAL

Remove front grille and check refrigeration lines to see that they are free (not touching each other or compressor).

Spin condenser fan blade to see that it is free.

Check that all service valves (3) are open. Remove wooden shipping blocks under compressor. Check all refrigeration lines and electrical conduit for rubbing or chaffing, paying particular attention to area where lines enter the cabinet. Make sure the compressor switch is on before start up the cabinet.

After removing the wooden blocks, the compressor would move freely on its mounting springs.

Remove cabinet from crate base and slide into location. Cabinet must be level from side to side and front to back for correct draining of coil pan and for self-closing doors to operate correctly. Allow minimum of 4” between back of cabinet and wall and between top of cabinet and ceiling for proper condensing unit air circulation.

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11/11 Rev. A 143589

To comply with Sanitation requirements the cabinet must be mounted on legs (6” high min.) or casters or the base must be sealed to the floor with an N.S.F. listed silicone sealant.

To comply with UL requirements the cabinet must have a minimum clearance of 4” at the top, 6” at the rear and 0” at each side.

ELECTRICAL WARNING

Before servicing electrical components in the case or the doors or door frames make sure all power to case is ff.

Always use a qualified technician.

Check voltage and amps drawn on (Page 11) to determine proper line and fuse or circuit breaker size. Check power supply for low voltage. If voltage reads “230” with no load, and it drops below “207” when the compressor tries to start, it is an indication of too small supply wiring or too long to run.

It is recommended that a separate circuit be run for each cabinet to prevent another appliance blowing the fuse or breaker, causing loss of product.

**The cabinet should be grounded.**

LOW TEMPERATURE FREEZERS – “Ice cream Hardening Cabinet” Models

The Ice Cream Hardening Cabinets has a power cord (15A, 230 Volt) on top of the cabinet at the right rear for connection to power. On initial start-up the evaporator fan motors will not start and you cannot initiate a defrost until the evaporator coil temperature has lowered to 25

F. This is due to the Electronic control. Also, the cabinet comes with a non-adjustable “Front” control to keep the mullion heaters off until the cabinet temperature has lowered to 10

F.

LEG AND CONDENSATE PAN INSTALLATION FOR TOP MOUNT CABINETS ONLY

1. Screw legs into existing crate mounting holes.

2. Mount pan and bracket assembly to rear of cabinet with 2 large sheet metal screws (supplied). Be sure pan is located directly under cabinet drain.

SERVICE INSTRUCTIONS

1. High head pressure and high back pressure:

A. Condenser coil clogged or restricted

B. Condenser fan motor defective.

C. Air discharge in rear of cabinet restricted.

2. Low back pressure and low head pressure:

A. Restriction in system.

B. Refrigerant undercharged.

C. Leak in system

3. Pressure normal – cabinet warm:

A. Coil blocked with frost (see #4).

B. Refrigerant undercharged.

C. Control set too warm.

4. Cabinet not cycling – coil blocked with frost:

A. Defective temperature controller.

B. Refrigerant overcharged.

C. Location too hot.

D. Condenser clogged.

E. Condenser fan motor defective.

F. Defrost heater not operating.

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11/11 Rev. A 143589

5. Compressor starts and runs – but cycles on overload:

A. Low voltage

B. Relay defective.

C. Overload defective.

D. High head pressure (see #1).

TEMPERATURE SENSOR, DEFROST HEATER AND FAN MOTOR REPLACEMENT

Before making any change, technician should:

1. Disconnect power to the cabinet

2. Remove screws from venturi and pull down

Sensor

To change a temperature sensor (cabinet zone sensor or defrost termination sensor), simply disconnect the sensor wires from the controller and replace the new sensor in the original position. Use plastic tie to tighten the zone sensor.

Insert the sensor for defrost termination firmly into the evaporator coil, in between the fins. Make sure the sensor wires do not touch or are not close to any heater rods.

Defrost Heater

To change defrost heater – remove screws from drain pan and pull down – remove screws from coil mounting straps – spring straps open – remove heater shield – pull heater out of slots in coil fins.

Fan Motor

To change fan motor – disconnect fan motor leads – remove screws from fan guards and motor mounts.

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11/11 Rev. A 143589

ELECTRONIC REFRIGERATION CONTROL

OPERATION

Compressor:

When power is first turned on to the control, the LED snowflake indicator on the display starts blinking.

After one-minute delay the compressor comes on. The LED snowflake indicator stays on while compressor relay is energized. Display will show actual box temperature. Figure 4 is the display layout.

The compressor will be cycled off when the actual box temperature reaches its set point. The LED snowflake indicator indicator will be off.

Fig. 4 – Display Lay-out

Fan:

The fans will run constantly except when a defrost is initiated, or when the evaporator temp is above the 25°F.

When in defrost mode the fan is off until the end of the defrost and the 2 minute drip time has passed. There is 2 minutes delay after a defrost before the fan comes on. If the Evaporator Temperature is 0°F or below the controller will override the fan delay. FAN LED indicator is on while FAN relay is energized.

Defrost

: The control uses time defrost with 3 defrost per day. A programmed “HOT-KEY” has to be used to re-set the defrost scheme for special applications. During defrost the display will show dEF and the LED indicator under DEF in on. The control begins timing the defrost when power is turned on. Three defrost per day means it will occur every 8 hours. To have defrost occur at 8am, 4pm, and 12pm then power up at lone of these three times.

MANUAL DEFROST

key for more than 2 seconds and a manual defrost will start.

2. While in defrost, Push and hold the DEFROST key for more than 5 seconds and the controller will end the defrost cycle. The controller will then enter drip mode for 2 minutes. The dF led is flashing in drip mode.

HOW TO SEE THE SETPOINT (Box temperature cut-out)

1. Push and immediately release the SET key: the display will show the Set point value;

2. Push and immediately release the SET key or wait for 5 seconds to display the probe value (actual box temperature) again.

HOW TO CHANGE THE SETPOINT

the key for more than 2 seconds to change the Set point value;

2. The value of the set point will be displayed and the LED under COMP starts blinking;

3. To change the Set value push the UP ▲ or DOWN▼ arrows within 10s.

4. To memorize the new set point value push the SET key again or wait 10s.

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11/11 Rev. A 143589

HOW TO CHANGE A PARAMETER VALUE

1. Enter the Programming mode by pressing the SET and DOWN ▼ dF and COMP start blinking).

2. Select the required parameter by pushing the UP ▲ or DOWN▼ arrows

keys for 3 seconds (LEDs under

3. Press the “SET” key to display its value (now only the COMP LED is blinking)

5. To exit: Press SET + UP ▲ or wait 15s without pressing a key.

NOTE 1:

The set value is stored even when the procedure is exited by waiting the time-out to expire.

NOTE 2:

Manufacture SETPOINT is set at a recommended –40

F at the factory.

NOTE 3:

To scroll down the parameters without changing them, press the DOWN button.

LIST OF PARAMETERS

Here is a list of the parameters the value of which can be changed in the programming mode, as well as their ranges.

Display

Symbol

Description

St

Hy

AU

AL

Ad

Temperature set point

Cut-out temperature is Set + Hy, Differential

High temperature alarm is enabled after a delay

Low temperaturealarm is enabled after a delay

Alarm delay

ALARM SIGNALS

Message Cause

“P1”

Room probe failure

Outputs

Range

-55 to 15°F

-30

 F

1 to 255°F

7

 F

230°F

-58°F

Factory

Setting

15

-45

0 to 255 min 30

 F

 F

Compressor output according to par. “Con” and “COF”

“P2”

“HA”

Evaporator probe failure

Maximum temperature alarm

Defrost end is timed

Outputs unchanged.

“LA”

Minimum temperature alarm Outputs unchanged.

“dA”

“EA”

Door open

External Alarm

Compressor and fans restarts

Output unchanged

“CA”

Serious External alarm(i1F=bAL) All output off

“CA”

Pressure switch alarm (i1F=PAL) Outputs unchanged.

NOTE:

Probe alarms “P1” and “P2” start some seconds after the fault in the related probe; they automatically stop some seconds after the probe restarts normal operation. Check connections before replacing the probe.

Temperature alarms “HA” and “LA” automatically stop as soon as the thermostat temperature returns to normal values and when defrost starts.

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11/11 Rev. A 143589

FINAL CHECK LIST

A. Check operating pressures.

B. Check electrical requirements of unit to supply voltage.

C. Set temperature control for desired temperature setting.

D. Check sight glass (if applicable) for proper refrigerant charge.

E. Check to make sure the compressor switch, behind the front grill, is on before start up the cabinet.

F. Check condensing unit for vibrating or rubbing tubing. Dampen and clamp as required.

G. All valves should be completely opened counter-clockwise.

H. Check packing nuts on all service valves.

I. Replace all service valve caps and latch unit covers.

SENSOR PROBE

NOTICE:

If the probe assembly is disconnected from the main board during normal operation (unit running), the connectors must be installed in the same position that they had before disconnection (P1 and P2), otherwise the control will not function properly.

The Electronic Refrigeration Control sensors have NTC thermistors. The reference resistance is 10,000 ohms at

77

F (25C). It carries NTC thermistors with a range of –58 to 230 F. In case there is a failure, these sensors should be used in replacement of the sensors shipped with the control. In order to diagnose faults in the probe, the control has LED functions as a diagnostic tool. When power is supplied to the control, the control display will flash P1 for a roomprobe failure and P2 for an evaporature probe failure

In case of a probe failure, the control will go into a safety mode of operation. While in safety mode the control ignores probe inputs and cycles the compressor on for 6 minutes and off for 4 minutes. To replace the sensor probes, disconnect power to the control, replace the probes and restart the unit. Since the wire is fixed to the cabinet, a technician may cut the sensor wire inside the cabinet and splice it with a new sensor.

SENSOR PROBE TEMPERATURE AND RESISTANCE

F

Temperature Resistance

C

Ohms

-31 -35 144,100

-22 -30 111,300

-12.5 -25 861,430

-4 -20 67,770

5 -15 53,410

14 -10 42,470

23 -5 33,900

32 0 27,280

41 5 22,050

50 10 17,960

59 15 14,690

68 20 12,090

77 25 10,000

86 30 8,313

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11/11 Rev. A 143589

CABINET COMPONENT AMP DRAW

(Condition: -30

F box and 80F ambient temperature)

NXBF48MMS/4

ITEM

VOLTAGE AMPS @

PART NO. RATING 208 VOLTS

AMPS @

230 VOLTS

Coil Defrost Heater 149382 230 V

Drain Pan Heater 149412 230 V

4.5

1.4

5

1.5

Condensate Heater 149388 230 V

Door Frame Heater 149401 220 V

Drain Heater 149410 230 V

Condenser motor 149394 230 V

1.2

.52 ea

0.03

0.4 ea.

1.3

0.52 ea.

0.03

0.4 ea.

Evaporator motor 149420 230 V

Compressor

NXBF27MMS/4

149386 230 V

0.2 ea.

6.4

VOLTAGE AMPS @

ITEM

0.2 ea.

6.8

AMPS @

PART NO. RATING 208 VOLTS 230 VOLTS

Coil Defrost Heater 149383 230 V

Condensate Heater 149387 230 V

Door Frame Heater 149401 220 V

Drain Heater 149410 230 V

Condenser motor 149394 230 V

Evaporator motor 149419 230 V

Compressor 149385 230 V

Accessories

2.7

1.2

0.54

0.03

0.4

0.2

4.6

3

1.3

0.54

0.03

0.4

0.2

4.9

Casters (4) 5” diameter

Tray Slides

A297-11140

9/16” lip ledge for 12” X 20” or 18” X 26” pans (must specify)

1-3/16” bottom ledge for 12” X 20” or 18” X 26” pans (must specify)

A340-21100

39-01080 Voltage Boosting Transformer

11

NOTES

Check Yellow wire from controller

Check Yellow wire from controller

Check Either Red or Black leg

Check black/white wire

Check either leg

Check either leg

Check Orange wire from controller

Check either leg

NOTES

Check Yellow wire from controller

Check Either Red or Black leg

Check black/white wire

Check either leg

Check either leg

Check Orange wire from controller

Check either leg

A297-11140

A340-21200

39-01080

11/11 Rev. A 143589

PART LIST

Use this chart when ordering replacement parts for your Ice Cream Hardening Cabinets. Always Advise Cabinet

Serial Number When Ordering Parts.

Cabinet Frame Heater

Coil Defrost Heater

Compressor

Condensate Heater

Condenser Coil

Condenser Fan Blade

Condenser Fan Guard

Condenser Fan Motor

Controller

10’ Sensor assy (2)

Contactor

Door Handle

CRO Valve

Door Frame Heater

Door Gasket

Door Hinge-Inner Doors-L.H.

Door Hinge-Inner Doors-R.H.

Door Hinge-Outer Doors

Door Trim

Drain Line Heater

Drain Pan Heater

Evaporator Coil

Evaporator Fan Blade

Evaporator Fan Guard

Evaporator Fan Motor

Expansion Valve

Female Plug

Front Control

Heater Safety Control

Leg

Compressor Switch

Shelves (Cantilever)

Sight Glass

Vibration Eliminator (1/2”)

Vibration Eliminator (5/8”)

SALE AND DISPOSAL

149381

149383

149385

149387

149389

149391

149392

149394

149395

149396

149397

149398

149399 12.5p set

149401

149402

149406

149407

149408

149410

149413

149415

149417

149419

149421

149422

149424

149425

149426

149427

149429

--

--

149382

149384

149386

149388

149390

149391

149393

149394

149395

143996

149397

149398

149400 22 # Setting

149401

149403

149405

149406

149407

149409

149410

149412

149414

149416

149418

149420

149421

149424

149425

149426

149428

149430

OWNER RESPONSIBILITY

If you sell or give away your cabinet, you must make sure that all safety labels and the Installation Service Manual are included with it. If you need replacement labels or manuals, contact the customer service department and we will provided them free.

The customer service department should be contacted at the time of sale or disposal of your cabinet so records may be kept of its new location.

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