Master Bilt IM-23GB Manual de usuario

IM-23GB

Installation & Operations Manual

With TLY 25 Controller

Master-Bilt Products

908 Highway 15 North

New Albany, MS 38652

Phone: (800) 684-8988

LN_ 09/26/06

TABLE OF CONTENTS

INTRODUCTION................................................................................................................................................................4

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

WARNING LABELS AND SAFETY INSTRUCTIONS.......................................................................................................4

NOTICE ..............................................................................................................................................................................5

GENERAL INSTRUCTIONS..............................................................................................................................................5

MECHANICAL....................................................................................................................................................................6

MASTER-BILT ELECTRONIC REFRIGERATION CONTROL (TLY-25 6

OPERATION..........................................................................................................................................................8

MANUAL DEFROSTS...........................................................................................................................................8

HOW TO CHANGE SETPOINTS..........................................................................................................................8

LIST OF PARAMETERS .......................................................................................................................................9

ALARM & OTHER SIGNALS.................................................................................................................................9

ELECTRICAL CONNECTIONS .......................................................................................................................................10

PROBE CONNECTIONS .................................................................................................................................................10

SERVICE INSTRUCTIONS..............................................................................................................................................10

TROUBLE SHOOTING....................................................................................................................................................11

CHECK LIST....................................................................................................................................................................11

CABINET CLEANING PROCEDURES............................................................................................................................12

ICE MERCHANDISER MONTHLY CHECKLIST............................................................................................................12

PARTS LIST.....................................................................................................................................................................13

SALE AND DISPOSAL ....................................................................................................................................................14

WIRING DIAGRAMS........................................................................................................................................................15

INTRODUCTION

Thank you for purchasing Master-Bilt Ice Merchandiser. This manual contains important instructions for installing,

using, cleaning, and servicing Master-Bilt Indoor Ice Merchandiser. A parts list is included with this manual. Read all

documents carefully before installing or servicing your equipment.

STORE CONDITIONS

The Master-Bilt Ice Merchandisers are designed to operate in a controlled environment. The temperature should be at

75°F or below for an indoor ice merchandiser, with relative humidity of 55% or less. At higher temperature or humidity

conditions, the performance of these merchandisers may be affected and the capacity diminished.

The Master-Bilt Ice Merchandiser should not be positioned where it is directly exposed to rays of the sun or near a

direct source of radiant heat or airflow. This will adversely affect the ice merchandiser and will result in poor

performance.

If this ice merchandiser is to be located against a wall, there should be at least 6” space between the wall and the back

of the unit. This space will allow for the circulation of air behind the ice merchandiser, which will prevent condensation

on the exterior surfaces.

WARNING LABELS AND SAFETY INSTRUCTIONS

This symbol is the safety-alert symbol. When you see this symbol on your ice merchandiser 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 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

CAUTION!

GROUND REQUIRED

FOR SAFE OPERATION

This label is attached on the cabinet

back and in the machine compartment. This label is located on the power cord.

NOTICE

Read this manual before installing, cleaning, or performing any maintenance on 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, 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

GENERAL INSTRUCTIONS

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

2. Keep the ice merchandiser clean and sanitary so it will meet your local sanitation codes. Clean the unit with a mild

detergent and water, then rinse.

3. Rotate your stock so that older stock does not accumulate.

4. Do not place product in the ice merchandiser when it is soft or partially thawed. Also, product should not be put in

the ice merchandiser for at least 6 hours after it is started.

5. Stock ice merchandiser as quickly as possible, exposing only small quantities to condition 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 Master-Bilt Ice Merchandiser, an immediate investigation should be

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

ice merchandiser 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.

The compressor is hermetic so it is internally spring mounted and ready to run.

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.

Check voltage and amps drawn on (Page 12-13) to determine proper line and fuse or circuit breaker size. Check power

supply for low voltage. If voltage reads “115” with no load, and it drops below “100” 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 ice merchandiser to prevent another appliance from blowing

the fuse or breaker, causing loss of product.

MASTER-BILT ELECTRONIC REFRIGERATION CONTROL (TLY-25)

GENERAL DESCRIPTION

The model TLY-25/29 is a digital controller with microprocessor that is typically used in cooling applications that have

temperature control with ON/OFF regulation and defrosting control with set time and hours intervals (Real Time Clock

Defrosting) by means of electrical.

The instrument has 3 relay outputs, two inputs for PTC or NTC temperature probes and a digital input, that can all be

configured.

The 3 outputs can be used for controlling the compressor or the temperature control device (OUT), the defrosting

device (DEF), the evaporation fan (FAN) or, alternatively any of the previous functions, using an auxiliary device (AUX)

or an alarm (AL).

The two inputs for the PTC and NTC temperature probes (which can be selected by parameter) can be used to

measure the cell temperature (Pr1) and the evaporator temperature (Pr2).

MICROPROCESSOR-BASED DIGITAL ELECTRONIC FREEZER CONTROLLER

712 136511 8

Aux

-OK+ Fan AuxDefOut

TLY 25

1 - Key P: Used for setting the Set point and for programming the function parameters

2 - Key DOWN/Aux: Used for decreasing the values to be set and for selecting the parameters. It can also be programmed via

the parameter “Fbd” to carry out other functions such as activating the Aux output, starting up the

continuous cycle, selecting the active set point or turning on and off (stand-by) the device.

3 - Key UP/DEFROST: Used for increasing the value to be set, for selecting the parameters and for activating manual defrosting.

4 - Key U: Used for visualising the temperatures taken by the cell probes and evaporator (Pr1 and Pr2) and the internal clock

(if present). It can also be programmed via the parameter “USrb” to carry out other functions, just like the

key DOWN/AUX (see par. 4.12).

5 - Led OUT: Indicates the compressor output status (or the temperature control device) on (on), off (off) or inhibited (flashing)

6 - Led DEF: Indicates defrosting in progress (on) or dripping (flashing).

7 - Led FAN: Indicates fan output status on (on), off (off) or delayed after defrosting (flashing)

8 - Led AUX: Indicates AUX output status on (on), off (off) or inhibited (flashing)

9 - Led AL: Indicates the alarm status (on), (off) and silenced or memorized (flashing)

10 - Led SET: Indicates the input in programming mode and the programming level of the parameters. It also serves to indicate

the Stand-by status.

11 - Led -: Indicates that a low temperature alarm is in progress (lit) or that a low temperature alarm has been memorised

(flashing).

12 - Led OK: Indicates that no alarms are in progress

13 - Led +: Indicates that a high temperature alarm is in progress (lit) or that a high temperature alarm has been memorised

(flashing)

OPERATION

Fan The fan will run constantly except when a defrost is initiated, or when the evaporator temp is above

35oF. 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. The difference of the evaporator

and room temperature of more than 9oF will override the fan delay. FAN LED indicator is flashing during 2

minutes drip period.

Defrost The control uses time defrosts with four defrost per day for oil return safety. The defrost timer

begins counting on power up. For example, if a defrost is desired at 12 am, 6 am, 12m, and 6 pm then

power up the unit at any of those four times.

MANUAL DEFROST

1. Push this DEFROST ”UP/DEFROST” key for more than 5 seconds and a manual defrost will

start, if the conditions are correct, the led DEF will light up and the instrument will carry out a

defrosting cycle.

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 DEF

led is flashing in drip mode.

HOW TO CHANGE SET POINTS

1. Press the P until sp-1 is displayed.

2. Push UP ▲or DOWN▼arrows to change the value.

3. To Exit: Press SET + UP ▲or wait 20 seconds 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: Master-Bilt’s SETPOINT is set at a recommended 20°F at the factory.

NOTE 3: If power is turned off to the unit, the set point returns to factory set value.

LIST OF PARAMETERS

Here is a list of factory set parameters the value of which can not be change in the field without the

password.

Symbols Descriptions Range M/B Setting

SPAt Active Set point 1 ÷ 2 1

SP1 Set Point 1 SPLL ÷ SPHL 20

SP2 Set Point 2 SPLL ÷ SPHL 20

SEnS Probes Type Ptc - ntc ntc

Unit Unit of measurement °C - °F °F

diSP Normal Display (Room Temperature) OFF - Pr1 - Pr2 - SP - CL Pr1

HSEt Differential 0 ÷ 30 °C/°F 5

tonE Compressor will run for 6 minutes OFF ÷ 99.59 min.sec 6.00

toFE Then off for 4 Minutes OFF ÷ 99.59 min.sec 4.00

dtyP EL = electrical Defrost EL - in EL

dint Defrosting interval OFF ÷ 99.59 hrs.min 6.00

dEFE Max. length of defrost cycle 0.01 ÷ 99.59 min.sec 30.00

tEdF Defrost stop temperature - 58 ÷ 302 °C/°F 55

tdCO Compressor delay after defrost (drainage time) OFF ÷ 99.59 min.sec 2.00

dLo Defrost display On - OFF - Lb lb

FLt High temperature fan off - 58 ÷ 302 °C/°F 45

PtC Compressor protection time OFF ÷ 99.59 min.sec 1.00

od Delay at power on OFF ÷ 99.59 min.sec 0.10

HAL High temperature Alarm threshold OFF / - 58 ÷ 302 °C/°F 32

ALd Temperature Alarms delay OFF ÷ 99.59 min.sec 30

ALARM SIGNALS

Message Cause Outputs

-E1 Reading Outside Range Inputs

Probe 1 bad or dis connected Control goes into fail safe mode. Compressor on 6 minutes

and of 4 minutes.

-E2 Reading Outside Range Defrost end is timed

E2 Probe 2 bad or disconnected Inputs

AL Allarm in Progress Outputs unchanged.

EEPr Inernal Memory Error Inputs

OTHER SIGNALS

Message Reason

od Delay in switching on in progress

dEF Defrosting in progress with “dLo” = Lb

PdEF Post-defrosting in progress with “dLo” = Lb

CC Continous Cycle in progress

HI Maximum temperature alarm in progress

LO Minimum temperature alarm in progress

AL Digital input alarm in progress

AP Door Open

ELECTRICAL CONNECTIONS

The controller is provided with screw terminal block to connect cables with a cross section up to 2,5 mm2. Before

connecting cables make sure the power supply complies with the control’s requirements. Separate the probe cables

from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current

allowed on each relay, in case of heavier loads use a suitable external relay.

PROBE CONNECTIONS

The probes shall be mounted with the bulb upwards to prevent damage due to casual liquid infiltration. It is

recommended to place the thermostat probe away from air streams to correctly measure the average room

temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is

formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.

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. Ice merchandiser not cycling – coil blocked with frost:

A. Defective temperature controller, or improper settings.

B. Refrigerant overcharged.

C. Location too hot.

D. Condenser clogged.

E. Condenser fan motor defective.

F. For freezer, defrost heater not operating.

G. Air leakage into ice merchandiser due to open door or faulty door seal.

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

A. Low voltage

B. Relay defective.

C. Overload defective.

D. High head pressure (see #1).

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