Master Bilt IHC-27 Manual de usuario

6/17Rev. E 57-02410

Installation & Operations Manual

Master-Bilt Products

908 Highway 15 orth

ew Albany, MS 38652

Phone: (800) 684-8988

6/17 Rev. E 57-02410 2

6/17 Rev. E 57-02410 3

TABLE OF CO TE TS

I TRODUCTIO ....4

STORE CO DITIO S......4

WAR I G LABELS A D SAFETY I STRUCTIO S........5

PRE-I STALLATIO I STRUCTIO S..........................6

Inspection for Shipping Da age!!!!!!!!!!!!!!!!!!!!!!......!!!!!.!!!....6

I STALLATIO I STRUCTIO S...6

General Instructions!!!!!!!!!!!!!!!!!!!!!!!!!!!!!..!!!.!!!!!..6

Mechanical ..!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!..!!!!.!!!..7

Electrical!!!!...!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!..!!!!!!!..7

Leg and Condensate Pan Installation..!!!!!!!!!!!!!!!!!!!!!!!..!!!!!.!..8

SERVICE I STRUCTIO S .......8

TEMPERATURE SE SOR, DEFROST HEATER A D FA MOTOR REPLACEME T.....9

ELECTRO IC REFRIGERATIO CO TROL.....10-11

SE SOR TEMPERATURE A D RESISTA CE....12

FI AL CHECK LIST....12

ACCESSORIES....12

PART UMBERS .....13

SALE A D DISPOSAL.......13

WIRI G DIAGRAM.......14-16

6/17 Rev. E 57-02410 4

I TRODUCTIO

Thank you for purchasing a Master-Bilt

cabinet. This anual contains i portant instructions for installing, using,

and servicing a Master-Bilt

IHC case. A parts list is included with this anual. Read all these docu ents carefully

before installing or servicing your equip ent.

STORE CO DITIO S

The Master-Bilt

IHCcases are designed to operate in the controlled environ ent of an air-conditioned store. The

store te perature should be at or below 75°F and a relative hu idity of 55% or less. At higher te perature or

hu idity conditions, the perfor ance of these cases ay be affected and the capacity di inished.

The Master-Bilt

IHC 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 perfor ance.

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.

OTICE

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.

DA GER

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

death.

NEVER use an extension cord to power these units. All electrical wiring hook-ups must be done in

accordance with all applicable local, regional or national standards.

OTICE

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 anual covering refrigeration and electrical co ponents contain technical instructions intended

only for persons qualified to perfor refrigeration and electrical work.

This anual cannot cover every installation, use or service situation. If you need additional infor ation, call or write

us:

Custo er Service Depart ent

Master-Bilt Products

Highway 15 North

New Albany, MS 38652

Phone (800) 684-8988

Fax (866) 882-7629

6/17 Rev. E 57-02410 5

CAUTION!

GROUND REQUIRED

FOR SAFE OPERATION

WAR I G LABELS A D SAFETY I STRUCTIO S

This sy bol is the safety-alert sy bol. When you see this sy bol on your cabinet or in this

anual, be alert to the potential for personal injury or da age to your equip ent.

Be sure you understand all safety essages and always follow reco ended precautions and safe operating

practices.

OTICE TO EMPLOYERS

You must make sure that everyone who installs, uses or services your cabinet is thoroughly familiar with all

safety information and procedures.

I portant safety infor ation is presented in this section and throughout the anual. The following signal words are

used in the warnings and safety essages:

DA GER: Severe injury or death will occur if you ignore the essage.

WAR I G: Severe injury or death can occur if you ignore the essage.

CAUTIO : Minor injury or da age to your cabinet can occur if you ignore the essage.

OTICE: This is i portant installation, operation or service infor ation. If you ignore the

essage, you ay da age 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 on models with a power cord.

label and on the wiring channel.

6/17 Rev. E 57-02410 6

PRE-I STALLATIO I STRUCTIO S

I SPECTIO FOR SHIPPI G DAMAGE

You are responsible for filing all freight clai s with the delivering truck line. Inspect all cartons and crates for

da age as soon as they arrive. If da age 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 da age is discovered when the cabinet is uncrated, i ediately call the delivering truck line and follow up the call

with a written report indicating concealed da age to your ship ent. Ask for an i ediate inspection of your

concealed da age ite . Crating aterial ust be retained to show the inspector fro the truck line.

I STALLATIO I STRUCTIO S

GE ERAL I STRUCTIO S

1. Be sure the equip ent is properly installed by co petent service people.

2. Keep the equip ent clean and sanitary so it will eet your local sanitation codes. Clean the cabinet with a ild

detergent and water, then rinse.

3. Rotate your stock so that older stock does not accu ulate. This is especially i portant for ice

crea . 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 s all quantities to store te peratures for short periods of ti e.

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

OTICE TO STORE OW ERS / MA AGERS

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 oisture or liquid is observed around or under a Master-Bilt

cabinet, an i ediate investigation should be ade

by qualified personnel to deter ine the source of the oisture or liquid. The investigation should deter ine if the

cabinet is alfunctioning or if there is a drainpipe leaking.

6/17 Rev. E 57-02410 7

MECHA ICAL

Re ove front grille and check refrigeration lines to see that they are free (not touching each other or co pressor).

Spin condenser fan blade to see that it is free.

Check that all service valves (3) are open. Re ove wooden shipping blocks under co pressor. Check all

refrigeration lines and electrical conduit for rubbing or chaffing, paying particular attention to area where lines enter

the cabinet. Make sure the co pressor switch is on before start up the cabinet.

After removering the wooden blocks, the compressor

should move freely on its mounting springs.

Re ove cabinet fro crate base and slide into location. Cabinet ust be level fro side to side and front to back for

correct draining of coil pan and for self-closing doors to operate correctly. Allow ini u of 4” between back of

cabinet and wall and between top of cabinet and ceiling for proper condensing unit air circulation.

To co ply with Sanitation require ents the cabinet ust be ounted on legs (6” high in.) or casters or the base

ust be sealed to the floor with an N.S.F. listed silicone sealant.

To co ply with UL require ents the cabinet ust have a ini u clearance of 4” at the top, 6” at the rear and 0” at

each side.

ELECTRICAL

WAR I G

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 a ps drawn on (Page 17) to deter ine 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 co pressor tries to

start, it is an indication of too s all supply wiring or too long to run.

It is reco ended 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.**

6/17 Rev. E 57-02410 8

LOW TEMPERATURE FREEZERS – “IHC” Models

The IHC 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 otors will not start and you cannot initiate a defrost until the evaporator coil te perature

has lowered to 25°F. This is due to the ther ostat. Also, the cabinet co es with a non-adjustable “Front” control to

keep the ullion heaters off until the cabinet te perature has lowered to 10°F.

EG AND CONDENSATE PAN INSTA ATION FOR TOP MOUNT CABINETS ON Y

1. Screw legs into existing crate ounting holes.

Condensate Heater Pan (IF PROVIDED)

Mount pan and bracket asse bly to rear of cabinet with

2 large sheet etal screws (supplied). Be sure pan is

located directly under cabinet drain.

Condensate Pan Assembly (OPTIO AL)

1. Place the condensate drain pan (evapoway pan) level behind

or slide under the IHC cabinet.

2. Route the drain line of the cabinet to the pan so the water

can drip into the pan during defrost.

* Do not let the drain tube touch the drain pan’s heater. It

can melt the tube or even catch it on fire.

3. Plug the drain pan into a separate 115V power supply.

SERVICE I STRUCTIO S

1. High head pressure and high back pressure:

A. Condenser coil clogged or restricted

B. Condenser fan otor defective.

C. Air discharge in rear of cabinet

restricted.

2. Low back pressure and low head pressure:

A. Restriction in syste .

B. Refrigerant undercharged.

C. Leak in syste

3. Pressure nor al – cabinet war :

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

B. Refrigerant undercharged.

C. Control set too war .

4. Cabinet not cycling – coil blocked with frost:

A. Defective te perature controller.

B. Refrigerant overcharged.

C. Location too hot.

D. Condenser clogged.

E. Condenser fan otor defective.

F. Defrost heater not operating.

5. Co pressor starts and runs – but cycles on

overload:

A. Low voltage

B. Relay defective.

C. Overload defective.

D. High head pressure (see #

6/17 Rev. E 57-02410 9

Temperature sensor, defrost heater and fan motor replacement

Before aking any change, technician should:

1. Disconnect power to the cabinet

2. Re ove screws fro venturi and pull down

To change a te perature sensor (cabinet zone sensor or defrost ter ination sensor), si ply disconnect

the sensor wires fro the controller and replace the new sensor in the original position. Use plastic tie to

tighten the zone sensor. Insert the sensor for defrost ter ination fir ly into the evaporator coil, in

between the fins. Make sure the sensor wires do not touch or are not close to any heater rods.

To change defrost heater – re ove screws fro drain pan and pull down – re ove screws fro coil

ounting straps – spring straps open – re ove heater shield – pull heater out of slots in coil fins.

To change fan otor – disconnect fan otor leads and screws that attach otor to bracket

ROOM TEMP. SENSOR

FAN DELAY/DEFROST

TERMINATION

SENSOR

MOTOR

MOTOR DEFROST

HEATER

HEATER SHIELD

VENTURI

EVAP. COIL

6/17 Rev. E 57-02410 10

MASTER-BILT

ELECTRO IC REFRIGERATIO CO TROL

Display Lay-out

Compressor When power is first turned on to the control, the controller will go through the start-up delay. After

one- inute delay the co pressor co es on. The LED for cooling indicator stays on while co pressor relay is

energized. Display will show actual box te perature. Picture above is the display layout. The co pressor will be

cycled off when the actual box te perature reaches its set point. The cooling indicator will be off.

Fan The fans will run constantly except when a defrost is initiated, or when the evaporator te p is above the 30

When in defrost ode the fan is off until the end of the defrost and the 2 inute drip ti e has passed. There is 2

inutes delay after a defrost before the fan co es on. If the Evaporator te perature is 35

F or below the controller

will override the fan delay. FAN indicator is on while FAN relay is energized.

Defrost The control uses ti e defrost with 2 defrost per day. The defrost sche e can be re-set the for special

applications. During defrost the display will show dEF when the defrost indicator on. The control begins ti ing the

defrost when power is turned on. The para eters of the controller is arranged in hours under the setting DFT. For

an exa ple, if four defrost per day is desired, the value should be set to “4”. Or to have defrost to occur at a

specific ti e such as 8 a and to have “6” defrost per day, power up at 8a , 2p , 8p , or 2a and set DFT to

“6”.

MA UAL DEFROST

Defrosting ay also be induced anually by keeping the defrost button for 3 seconds. Once defrost has started, the

cabinet will go through a defrost and drip ti e pull down cycle.

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