Henny Penny HMI-103 Service Manual

Henny Penny Island Warmer Model HMI-103 Model HMI-105

TECHNICAL MANUAL

Model HMI-103/105

TABLE OF CONTENTS

Section Page

Section 1. TROUBLESHOOTING ............................................................................................... 1-1

1-1. Introduction ........................................................................................................ 1-1

1-2. Safety .................................................................................................................. 1-1

1-3. Troubleshooting .................................................................................................. 1-2

Section 2. MAINTENANCE ......................................................................................................... 2-1

2-1. Introduction ........................................................................................................ 2-1

2-2. Test Instruments .................................................................................................. 2-1

2-3. Fuse ..................................................................................................................... 2-1

2-4. Radiant Heaters ................................................................................................... 2-2

2-5. Light Socket ........................................................................................................ 2-2

2-6. Air Heaters .......................................................................................................... 2-3

2-7. Power Switch ...................................................................................................... 2-3

2-8. Inﬁ nite Regulator ................................................................................................ 2-4

2-9. High Limit .......................................................................................................... 2-5

2-10. Front Glass Removal .......................................................................................... 2-6

2-11. Slide Glass Removal ........................................................................................... 2-7

2-12. Cooling Fans ....................................................................................................... 2-7

2-13. Contactor ............................................................................................................ 2-8

2-14. Wiring Diagrams ................................................................................................ 2-9

Section 3. PARTS INFORMATION .............................................................................................. 3-1

3-1. Introduction ........................................................................................................ 3-1

3-2. Genuine Parts ...................................................................................................... 3-1

3-3. When Ordering Parts .......................................................................................... 3-1

3-4. Prices .................................................................................................................. 3-1

3-5. Delivery .............................................................................................................. 3-1

3-6. Warranty ............................................................................................................. 3-1

3-7. Recommended Spare Parts for Distributors ....................................................... 3-1

FM06-015

Revised 08-12-10

810 i

Model HMI-103/105

SECTION 1. TROUBLESHOOTING

1-1. INTRODUCTION This section provides troubleshooting information in the form

of an easy to read table. If a problem occurs during the ﬁ rst operation of a new cabinet,

recheck the Installation Section of the Operator’s Manual. Before troubleshooting always recheck the Operating

Instructions Section of the Operator’s manual.

1-2. SAFETY Where information is of particular importance or is safety related, the words NOTICE, CAUTION, or WARNING are used. Their usage is described below.

SAFETY ALERT SYMBOL is used with DANGER, WARNING, or CAUTION which indicates a personal injury type hazard.

NOTICE is used to highlight especially important information.

CAUTION used without the safety alert symbol indicates

a potentially hazardous situation which, if not avoided, may result in property damage.

CAUTION used with the safety alert symbol indicates a

potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

203 1-1

Model HMI-103/105

1-3. TROUBLESHOOTING To isolate a malfunction proceed as follows:

1. Clearly deﬁ ne the problem or symptom.

2. Locate the problem in the troubleshooting table.

3. Review all possible causes, then work through the list of corrections one-at-a-time until the problem is solved.

Refer to maintenance procedures in Section 2 to safely

and properly make the checkout and repair needed.

PROBLEM CAUSE CORRECTION

OPERATIONS

Product not holding temperature

A. Lights will not turn on

• Product held too long

• Only hold product for speciﬁ ed times

• Radiant heat too low

• Radiant heat not working

• Turn to a higher setting

• Check radiant heaters per Radiant Heaters Section

• Air heat too low

• Air heaters not working

• High limit open

• Turn to a higher setting

• Check heaters per Air Heaters Section

• Check cooling fan

• Check high limits

LIGHTING

• Defective fuse • Check fuse and replace if necessary

• Faulty switch • Check switch and replace if necessary

• Check ﬁ eld wiring to be sure a true

• No neutral supplied in ﬁ eld wiring neutral has been connected

• Loose or defective wiring

• Check wiring and repair or replace if necessary

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Model HMI-103/105

1-3. TROUBLESHOOTING (Continued)

PROBLEM CAUSE CORRECTION

B. Not all lights turn on

• Faulty light bulb

• Faulty light socket

• Faulty switch

HEATING SECTION

A. Radiant heat not

• Faulty inﬁ nite regulator

working

• Faulty power switch • Check switch and replace if necessary

• Faulty heater • Check heater and replace if necessary

• Faulty contactor • Check contactor and replace if

• High limit opened • Check cooling fans

B. Air heat not

• Faulty inﬁ nite regulator • Replace inﬁ nite regulator per

working

• Faulty power switch • Check switch and replace if

• Replace with recommended bulb

• Replace socket per Light Socket Section

• Check switch and replace if necessary

• Replace inﬁ nite regulator per Inﬁ nite Regulator Section

necessary

• Check high limits (reset)

Inﬁ nite Regulator Section

necessary

• Faulty heater • Check heater and replace if necessary

• Faulty contactor • Check contactor and replace if necessary

• High limit opened • Check cooling fans

• Check high limits (reset)

203 1-3

Model HMI-103/105

SECTION 2. MAINTENANCE

2-1. INTRODUCTION This section provides procedures for check out and replacement

of the various parts used within the cabinet. Before replacing any parts, refer to the Troubleshooting Section. It will aid you in determining the cause of the malfunction.

2-2. TEST INSTRUMENTS You may want to use two test instruments to check the electric components.

1. A continuity light

2. An ohmmeter When the manual refers to a circuit being closed, the continuity

light will be illuminated or the ohmmeter should read zero unless otherwise noted.

When the manual refers to a circuit being open, the continuity light will not illuminate or the ohmmeter will read 1 (one) or inﬁ nite resistance.

A continuity tester cannot be used to check coils. 2-3. FUSE 1. Remove electrical power supplied to the unit.

To avoid electrical shock or property damage, move

power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle.

2. Open the control panel cover and locate both fuse holders.

Step 2

3. Unscrew the caps, counterclockwise, and pull fuses from holders.

4. Place leads of meter on each end of a fuse, and check for continuity on both fuses. If one shows an open circuit, replace it with a 15 amp fuse (HP no. EF02-007).

Step 3

203 2-1

Model HMI-103/105

2-4. RADIANT HEATERS 1. Remove electrical power supplied to the unit.

To avoid electrical shock or property damage, move

power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle.

2. Remove screws from access panel on both sides of radiant

Step 2

heater and let light socket and heater hang down.

3. Remove screw from inner side of access panel.

4. Remove wires from heater; pull radiant heater from panel.

5. Install new radiant heaters.

Step 3

The radiant heaters are paired and wired in series. If one heater is bad, two won’t heat.

Step 4

2-5. LIGHT SOCKET 1. Remove electrical power supplied to the unit.

To avoid electrical shock or property damage, move

power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle.

2. Remove screws from access panel on both sides of light

Step 3

socket, as shown above in the Radiant Heaters Section.

3. Remove wires from light socket.

4. Depress retainer on light socket and push through panel.

5. Install new light socket.

Step 4

2-2 203

Model HMI-103/105

2-6. AIR HEATERS 1. Remove electrical power supplied to the unit.

To avoid electrical shock or property damage, move

power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle.

2. Remove pans and pan supports from unit.

Step 3

3. Remove heater screws from inside of well.

4. Pull heater terminals out into interior of unit to access wires.

5. Remove wires from heater and pull heater from unit.

6. Install new heater.

Step 5

2-7. POWER SWITCH 1. Remove electrical power supplied to the unit.

To avoid electrical shock or property damage, move

power switch to OFF and disconnect main circuit breaker, or unplug cord at wall receptacle.

2. Open control panel cover and remove the four screws

Step 2

securing the control panel.

3. Pull control panel out to access back of switch. Pull and label the wires of switch.

Step 3

203 2-3

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