Master Bilt TAC-27 Manuel utilisateur

Installation & Operations Manual

Master-Bilt Products

908 Highway 15 North

New Albany, MS 38652

Phone: (800) 684-8988 PN 217-90000

10/16/03

TABLE OF CONTENTS

INTRODUCTION………………………………….……………………………………………………………………

STORE CONDITIONS…………………………….……………….…..…………………………………………….. 4

WARNING LABELS AND SAFETY INSTRUCTIONS………..…..……………………………………………… 5

PRE-INSTALLATION INSTRUCTIONS………………………..…..………………………………….……………6

Inspection for ShippingDamage……………………………………………………………….……………6

INSTALLATION INSTRUCTIONS………………………………………………………………………………….. 7

General Instructions………………………………………………………………………………………….7

Location………………………………………………………………………………………………………..7

Dimensional Data……………………………………………………………………………………………..7

STARTING PROCEDURE…………………………………………………………………………………………….8

FINAL CHECK LIST…………………………………………………………………………………….……………..8

SERVICE INSTRUCTIONS……………………………………………………………………………………………9

MASTER-BILT PART NUMBERS…………………………………………………………………………………...10

SALE AND DISPOSAL………………………………………………………………………………………………..11

WIRING DIAGRAMS TAC27.…………………………………………….……………………….………………….12

WIRING DIAGRAMS TAC27R.…………………………………………….……………………….………………..13

WIRING DIAGRAMS TAC48.…………………………………………….……………………….………………….14

WIRING DIAGRAMS TAC48R.…………………………………………….……………………….………………..15

WIRING DIAGRAMS TAC74…………………………………………….……………………….……………….….16

WIRING DIAGRAMS TAC74R.…………………………………………….……………………….………………..17

WIRING DIAGRAMS TAF27.…………………………………………….……………………….………………….18

WIRING DIAGRAMS TAF48/TAF74…………………………………….……………………….………………….19

WIRING DIAGRAMS TAF-ALL REMOTE AND QUICK CONNECT….……………………….……………….. 20

INTRODUCTION

Thank you for purchasing a Master-Bilt cabinet. This manual contains important instructions for installing,

using and servicing a Master-Bilt TAF/TAC case. A parts list is included in with this manual. Read all these

documents carefully before installing or servicing your equipment.

STORE CONDITIONS

The Master-Bilt TAF/TAC 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. It is not uncommon in a newly constructed store for the temperature and humidity to be above

design conditions. These excessive conditions may produce sweating in the case until the store is operational

and the ambient environment is more desirable.

The Master-Bilt TAF/TAC should not be positioned where it is directly exposed to rays of sun or near a direct

source of radiant heat or air flow. 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 of 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.

CAUTION!

GROUND REQUIRED

FOR SAFE OPERATION

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, call or

write us:

Customer Service Department

Master-Bilt Products

Highway 15 North

New Albany, MS 38652

Phone (800) 684-8988

Fax (800) 684-8988

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 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 Master-Bilt Products

cabinet at the factory. Follow all warning label instructions. If any warning or safety labels become

lost or damaged, call your customer service department at (800) 684-8988 for replacements.

This label is located on top of the electrical control This label is attached to the cabinet power cord

label and on the wiring channel. on models with a power cord.

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

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

2. Keep the equipment clean and sanitary so it will meet your local sanitation codes.

3. 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.

4. 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.

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

time.

6. When replacing burned out fluorescent tubes, be sure that the electrical power to the lighting circuit is

turned off.

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 (2) are open. Cut compressor

hold-down strap and remove. The springs are secured for

shipping by either tightening bolts or shipping strap. Remove the

strap or loosen the hold-down bolts so that the compressor

floats freely. Check all refrigeration lines and electrical conduit

for rubbing or chaffing, paying particular attention to area where

lines enter the cabinet.

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.

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.

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 Master-Bilt cabinet, an immediated 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 drain pipe leaking.

ELECTRICAL

WARNING

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

case is off. Always use a qualified technician.

INSTALLATION INSTRUCTIONS

To comply with N.S.F. requirements,

7this cabinet must be mounted on

casters, legs (6” high min.) or the

base must be sealed to the floor.

The casters provided with this case

screw into the holes from which the

shipping bolts were removed.

CONDENSATE PAN INSTALLATION FOR TOP MOUNT CABINETS ONLY

1. Before moving cabinet into place,

remove the condensate pan from

the top unit compartment.

2. Using the two screws supplied with

the pan, attach the pan to the back

of the cabinet at the two holes near

the bottom of the plastic drain line.

Be sure pan is NOT located directly

under cabinet. When the pan is

attached, feed drain line into the

open hole in screen and clamp the

heater conduit to the back of the

cabinet. Due to this condensate

pan, this case must be a minimum

of 6” from the wall.

3. If cabinet must be located next to

wall on legs, the pan can be located

under the cabinet. When this is

done, steam will accumulate on the

bottom of the cabinet if there is not

adequate ventilation, and rusting of

the bottom of the cabinet will occur.

Low Temperature Freezers – TAF Models

The TAF - 27 models are cord connected and operate on a 15 amp, 115/60/1 circuit. The TAF – 48 models are

cord connected and operate on a 20 amp, 115/60/1 circuit. The TAF – 74 models have two junction boxes

mounted on top of the cabinet at the right rear for permanent connection to power. One junction box is labeled

115v. (black,white and green lead) ; the other is labeled 230v. (black,red and green lead). These boxes should

be connected to their respective power source.

Check inside the cabinet for the power requirement for each cabinet. The label is located in the upper left hand

corner. These TAF models are equipped with timers and electric defrost with a defrost termination and fan

delay thermostat. Because of this thermostat, on initial start up the evaporator fan motors will not start and you

cannot initiate a defrost until the cabinet temperature is lowered to 10°F to 20°F

The temperature thermostat on the TAF models does not have an “Off” position, so the condensing unit will

start up immediately when the power is connected to the cabinet.

Medium Temperature Refrigerators (TAC Models)

All TAC models are equipped with a 115/60/1 lead cord and plug cap. When connected to power, the

condensing unit and evaporator fan (s) will start. The mullion heaters will heat and, when the door is opened,

the lights will be energized.

FINAL CHECK LIST

A. Check setting of defrost timer:

1. Four defrost/24 hours, with 30 minute fail safe. (TAF ONLY)

B. Check operating pressures.

C. Check electrical requirements of unit to supply voltage.

D. Set temperature control for desired temperature range.

E. Check sight glass for proper refrigerant charge.

F. Check system for proper defrost settings and operation.

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

H. All valves should be completeley open counter-clockwise.

I. Check packing nts on all service valves.

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

SERVICE INSTRUCTIONS (Trouble Shooting Guide)

1. High head pressure and high back pressure:

A. Condenser coil clogged or restricted.

B. Condenser fan motor defective.

2. Low back pressure and low head pressure:

A. Restriction in system.

B. Refrigerant undercharged.

C. Leak in system.

3. Pressures normal – cabinet warm:

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

B. Refrigerant undercharged.

C. Control set too warm.

D. Air screen disturbance.

4. Coil blocked with frost or ice:

A. Defective temperature control. E. P-trap in drain not installed.

B. Time clock not operating properly. F. Doors aren’t sealing when closed.

C. Improper time clock setting. G. Evaporator fan motor defective.

D. Defrost heater not operating. I. Low voltage.

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

A. Low voltage.

B. Dropped phase (3 phase).

C. Overload protector defective.

D. High head pressure (see#1).

6. Compressor will not start – hums, but cycles on overload:

A. Low voltage.

B. Relay defective.

C. Overload defective.

D. High head pressure (see #1).

7. Special service situations:

If moisture or liquid is observed around or under a Master-Bilt cabinet, an immediate investigation

should be made by qualified personnel to determine the source of moisture or liquid. The investigation

made should determine if the cabinet is malfunctioning or if there is a simple housekeeping problem.

Moisture or liquid around or under a 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 a

cabinet should be corrected immediately.

MASTER-BILT PART NUMBERS

The table below gives Master-Bilt part numbers. Use this chart when ordering replacement parts for your

TAC/TAF cases.

Description TAC-27 TAC-48 TAC-74 TAF-27 TAF-48 TAF-74

Bulb 23-00343 23-00343 23-00343 23-00343 23-00343 23-00343

Bulb Holder 23-01080 23-01080 23-01080 23-01080 23-01080 23-01080

Bulb Shield 23-01465 23-01465 23-01465 23-01465 23-01465 23-01465

Caster W \ Brake 27-00591 27-00591 27-00591 27-00591 27-00591 27-00591

Casters W \ O Brake 27-00590 27-00590 27-00590 27-00590 27-00590 27-00590

Capillary Tube 11-01450 11-01450 11-01451

Coil Defrost Heater 17-00443 17-09113 17-09076

Condensate Heater 17-00421 17-00421 17-00421 17-00421 17-00421 17-00421

Condensing Unit 01-01471 01-01471 01-01472 01-01488 01-01510 01-01487

Def. Term. Fan Delay 19-13195 19-13195 19-13195

Digital Thermometer 19-13271 19-13271 19-13271 19-13271 19-13271 19-13271

Door Frame Heater 17-09148 17-09144 17-09144 17-09449 17-09142 17-09142

Door Gasket 37-01207 37-01211 37-01211 37-01207 37-01211 37-01211

Door Handle 35-01488 35-01488 35-01488 35-01488 35-01488 35-01488

Door Hinge Assembly A35-01501 A35-01501 A35-01501 A35-01501 A35-01501 A35-01501

Door Light Switch 35-01506 35-01506 35-01506 35-01506 35-01506 35-01506

Door Opening Trim 29-01481 29-01481 29-01481 29-01481 29-01481 29-01481

Drain Line Heater 17-00404 17-00404 17-00404

Drier 09-09308 09-09308 09-09308 09-09171 09-09506 09-09506

Evaporator Coil 07-00750 07-00135 07-00135 07-00750 07-13089 07-13089

Evaporator Fan Blade 15-01184 15-01184 15-01184 15-01184 15-01184 15-01184

Evaporator Fan Guard 25-00205 25-00205 25-00205 25-00205 25-00205 25-00205

Evaporator Fan Motor 13-00685 13-00685 13-00685 13-00685 13-00685 13-00685

Expansion Valve 09-09187 09-09542 09-09542

Female Plug 21-00577

Front Control

Heater Safety Control 19-01307 19-01164 19-01164

Leg 27-00558 27-00558 27-00558 27-00558 27-00558 27-00558

Pilaster 33-01408 33-01408 33-01408 33-01408 33-01408 33-01408

Pressure Control 19-13173 19-13173

Power Cord 21-00312 21-00312 21-00312 21-01454 21-01454

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