Henny Penny MPC-1L Service Manual

Henny Penny

Multipurpose Holding Cabinet

Model MPC-554
Model MPC-1L
Model MPC-22

FM06-038-B

TECHNICAL MANUAL

Model MPC-1L, MPC-22, MPC-554

TABLE OF CONTENTS

Section Page

Preface SAFETY AND COMPLIANCE ........................................................................................... ii

WARRANTY......................................................................................................................... iii

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

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

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

1-3. Test Instrument ............................................................................................................ 1-2

1-4. Troubleshooting ........................................................................................................... 1-2

1-5. Error Codes .................................................................................................................. 1-4

Section 2. SPECIAL PROGRAMMING MODE................................................................................... 2-1

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

2-2 Accessing Special Programming Mode....................................................................... 2-1

2-3 Entering Password....................................................................................................... 2-1

2-4 Programming Descriptions.......................................................................................... 2-2

Section 3. MAINTENANCE ................................................................................................................. 3-1

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

3-2. Maintenance Hints ....................................................................................................... 3-1

3-3. Control Board Replacement ........................................................................................ 3-1

3-4. Transformer Replacement ........................................................................................... 3-2

3-5. Relay Replacement ...................................................................................................... 3-3

3-6. Power Switch & LED Replacement ............................................................................ 3-5

3-7. MPC-554 Liner/Heater Assy. Replacement ................................................................ 3-6

3-8. MPC-22 & MPC-1L Liner/Heater Assy. Replacement ............................................... 3-8

3-8. Wiring Diagrams ......................................................................................................... 3-9

Section 4. PARTS INFORMATION....................................................................................................... 4-1

4-1. Introduction ................................................................................................................. 4-1

4-2. Genuine Parts............................................................................................................... 4-1

4-3. When Ordering Parts ................................................................................................... 4-1

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

4-5. Delivery ....................................................................................................................... 4-1

4-6. Recommended Spare Parts for Distributors ................................................................ 4-1

i FM06-038-BOct. 2018

Model MPC-1L, MPC-22, MPC-554

PREFACE:SAFETY AND COMPLIANCE

These are the original version controlled Henny Penny instructions for Multipurpose Holding Cabinet
(MPC) Model MPC - 554, 1L, and 22. This manual is available on the Henny Penny Public website
(www.hennypenny.com). Read these instructions completely prior to installation and operation of
this appliance to ensure compliance to all required installation, operation and safety standards. Read
and obey all safety messages to avoid damage to the appliance and personal injury.

This appliance is intended for commercial use in kitchens of restaurants, bakeries, hospitals, etc. but
not for the continuous mass production of food such as in a factory setting. During use the units
airborne A-weighted emission sound pressure is below 70 db(A). All repairs must be performed by

the manufacturer, its service agent or similarly qualied persons in order to avoid a hazard.

Always use strain relief. Install the provided power cord with the ground wire dimensioned to fail last.
If the supplied power cord or an existing one becomes damaged, do not use it; rather, replace it with
a known good power cord.The power cord must be replaced by the manufacturer, its service agent or

similarly qualied persons in order to avoid a hazard.

Proper daily, weekly, monthly, quarterly and yearly maintenance must be performed on this
appliance to ensure safe and continuous operation. This appliance must never be cleaned with a
water jet or steam cleaning tool. Cleaning brushes are shipped with the appliance and proper
cleaning instructions are included in this manual.

This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.

This appliance is not intended to be operated by means of an external timer or a separate remote
control system.

iiOct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

LIMITED WARRANTY FOR HENNY PENNY EQUIPMENT

Subject to the following conditions, Henny Penny Corporation makes the following limited warranties to the original pur-

chaser only for Henny Penny appliances and replacement parts:

NEW EQUIPMENT: Any part of a new appliance, except baskets, lamps, and fuses, which proves to be defective in
material or workmanship within two (2) years from date of original installation, will be repaired or replaced without

charge F.O.B. factory, Eaton, Ohio, or F.O.B. authorized distributor. Baskets will be repaired or replaced for ninety (90)

days from date of original installation. Lamps and fuses are not covered under this Limited Warranty. To validate this
warranty, the registration card for the appliance must be mailed to Henny Penny within ten (10) days after installation.

FILTER SYSTEM: Failure of any parts within a fryer lter system caused by the use of the non-OEM lters or
other unapproved lters is not covered under this Limited Warranty.

REPLACEMENT PARTS: Any appliance replacement part, except lamps and fuses, which proves to be defective in
material or workmanship within ninety (90) days from date of original installation will be repaired or replaced without

charge F.O.B. factory, Eaton, Ohio, or F.O.B. authorized distributor.

The warranty for new equipment covers the repair or replacement of the defective part and includes labor charges and

maximum mileage charges of 200 miles round trip for a period of one (1) year from the date of original installation.

The warranty for replacement parts covers only the repair or replacement of the defective part and does not include any
labor charges for the removal and installation of any parts, travel, or other expenses incidental to the repair or replacement of
a part.

EXTENDED FRYPOT WARRANTY: Henny Penny will replace any frypot that fails due to manufacturing or workmanship
issues for a period of up to seven (7) years from date of manufacture. This warranty shall not cover any frypot that fails due to
any misuse or abuse, such as heating of the frypot without shortening.

0 TO 3 YEARS: During this time, any frypot that fails due to manufacturing or workmanship issues will
be replaced at no charge for parts, labor, or freight. Henny Penny will either install a new frypot at no cost
or provide a new or reconditioned replacement fryer at no cost.

3 TO 7 YEARS: During this time, any frypot that fails due to manufacturing or workmanship issues will
be replaced at no charge for the frypot only. Any freight charges and labor costs to install the new frypot

as well as the cost of any other parts replaced, such as insulation, thermal sensors, high limits, ttings, and

hardware, will be the responsibility of the owner.

Any claim must be presented to either Henny Penny or the distributor from whom the appliance was purchased. No allow­ance will be granted for repairs made by anyone else without Henny Penny’s written consent. If damage occurs during shipping,

notify the sender at once so that a claim may be led.

THE ABOVE LIMITED WARRANTY SETS FORTH THE SOLE REMEDY AGAINST HENNY PENNY FOR ANY
BREACH OF WARRANTY OR OTHER TERM. BUYER AGREES THAT NO OTHER REMEDY (INCLUDING CLAIMS
FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES) SHALL BE AVAILABLE.

The above limited warranty does not apply (a) to damage resulting from accident, alteration, misuse, or abuse; (b) if the
equipment’s serial number is removed or defaced; or (c) for lamps and fuses. THE ABOVE LIMITED WARRANTY IS EX­PRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY AND
FITNESS, AND ALL OTHER WARRANTIES ARE EXCLUDED. HENNY PENNY NEITHER ASSUMES NOR AUTHO­RIZES ANY PERSON TO ASSUME FOR IT ANY OTHER OBLIGATION OR LIABILITY.

Revised 01/01/07

iii FM06-038-BJune 2007

Model MPC-1L, MPC-22, MPC-554

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 rst operation of a new cabinet.

1-2. SAFETY The Henny Penny unit has many safety features incorporated.
However, the only way to ensure safe operation is to fully
understand the proper installation, operation, and
maintenance procedures. The instructions in this manual have
been prepared to aid you in learning the proper procedures.
Where information is of particular importance or is safety
related, the words DANGER, WARNING, CAUTION,
or NOTICE are used. Their usage is described as follows:

DANGER! indicates a hazardous situation which, if not

avoided, will result in death or serious injury.

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

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

NOTICE is used to for information considered important
regarding property damage.

NOTE: is used to highlight especially important information

SHOCK HAZARD SYMBOL

HOT SURFACE SYMBOL

1-1 FM06-038-BOct. 2018

Model MPC-1L, MPC-22, MPC-554

These two test instruments will help to check the electrical

1-3. TEST INSTRUMENTS

components:

1. A voltmeter

2. An ohmmeter.

When the manual refers to the circuit being closed, the ohmme-

ter should read zero unless otherwise noted. When the manual
refers to the circuit being open, the ohmmeter will read innite

resistance.

Do not use an ohmmeter to check solid state relays. Use a
voltmeter as decribed in the Troubleshooting Section.

1-4. TROUBLESHOOTING To isolate a malfunction, proceed as follows:

1. Clearly dene the problem (or symptom) and when it

occurs.

2. Locate the problem in the troubleshooting table.

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

PROBLEM CAUSE CORRECTION

With power switch in • Open circuit • Check to see that unit is
POWER position, unit plugged in
is completely
inoperative (no power) • Check breaker or fuse at
supply box

• Check voltage at wall
receptacle

• Check POWER switch;
replace if defective

• Check internal component
connectors, and the cord and plug,
for loose connections

• Transformer defective • Check input and output voltage;
replace if defective

• Control board defective • Check for 12 volt input from
transformer; if control board shows
12 volts, replace control board

1-2Oct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

1-4. TROUBLESHOOTING (Continued)

PROBLEM CAUSE CORRECTION

Unit will not heat

• Control board not calling
for heat

• Verify set-point reading; if zone (see Zone

Positions at left) tempeature is below
setpoint and not calling for heat
(no 5 vdc), control board defective

Individual zone does

• Faulty heat relay

not heat

MPC-554

ZONE POSITIONS

Top

Bottom

V1901-RH

Side

To avoid electrical shock, make con­nections before applying power, take
reading, and remove power before

Side

Top

Bottom

removing meter leads. The following
checks are performed with the wall
circuit breaker closed and the main

V1901-LH

power switch in the ON position.

Testing for proper relay operation:

1. With no power (5 vdc) going to the relay,
120 volts should show on the output side
of the relay, and 0 volts on the input
(5 volts). If no 120 volts, check for open
heater, and if heater is OK, replace relay.

2. With the component energized, 0 volts

should show on the output side of the relay,
and 5 vdc on the input side. If not,
replace relay. Also, check for reverse
polarity of 5 vdc to relay-reference wiring
diagram.

3. If voltage varies from steps 1 and 2,
remove power to unit pull input wires from
relay and place leads of meter onto input
wires. Reapply power to unit. When unit
is running, if the input wires to relay shows
5vdc, the relay is faulty.

• Faulty heater

• Faulty heater RTD

• Refer to wiring diagrams in back of this
manual, and with the outputs on, check
across terminal #1 of the appropriate
relay and the neutral wire (#N5 on 554 or
#N2 on 1L or 22) at the transformer. If
meter shows full voltage (120V), but
heater is not heating, replace heater and
liner assy.

• Refer to wiring diagrams in back of this
manual, and disconnect 15-pin connector
at control board. With an ohm meter,
check between the appropriate terminals
on connector and the corresponding termi­ nal on the terminal block. Meter should
read 35 to 41 ohms at room temperature.
Replace liner and heater assy if necessary

• Refer to wiring diagram page 2-9, and
disconnect 15-pin connector at control
board. With an ohm meter, check between
the appropriate terminals on connector,
based upon which RTD is being checked.
Meter should read about 1080 ohms at
room temperature. Replace liner and
heater assy. if necessary.

1-3 FM06-038-BJuly 2011

Model MPC-1L, MPC-22, MPC-554

1-4. TROUBLESHOOTING (Continued)

PROBLEM CAUSE CORRECTION

Product not holding
temperature

• Heat settings too low

• Have heat zones set to factory default

temperatures

Red LED, when should
be green, or vice versa

Front LED does not
light

• Low or improper voltage

• Product held too long

• Product not placed correctly in unit

• Polarity reversed on LED wires

• Faulty LED

• Using meter, compare receptacle
voltage to data plate voltage

• Hold product for recommended time

• Push pans in completely

• Access the LED wires on side of unit
and reverse wires at wire nuts

• Access LED wires on side of unit and
check for dc voltage; if no voltage,
check for voltage at control board; if
voltage present, replace LED

1-5. ERROR CODES

DISPLAY CAUSE PANEL BOARD CORRECTION

“E-4” Control board Turn switch to OFF position, then turn switch back

overheating to ON; if display shows “E-4”, the control board is
getting too hot; make sure unit is not overheating;
if control board is not overheating and “E-4”
persists, replace control board

“E-6” Faulty temperature Turn switch to OFF position, then turn switch back
to probe ON; if “E-6” still shows, have temperature
probe checked

“E-41” Memory scrambled Turn switch to OFF position, then turn switch back
to ON; if “E-41” still shows, have the controls

intitialized; if display still shows “E-41”, replace

control board

“E-5” Unit over-heating; If control board doesn’t cut power to relay when the
faulty relay or LED is green, then replace control board; but
control board if control board does cut power to relay when the
LED is green, but unit continues to heat, check relay

1-4Oct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

P

READY

READY

READY

®

SECTION 2. SPECIAL PROGRAMMING MODE

2-1. INTRODUCTION

2-2. ACCESSING SPECIAL
PROGRAMMING MODE

2-3. ENTERING PASSWORD

PASSWORD = 1234

This mode records historic information on the holding cabinet
and operator performance, which could help in troubleshooting
a problem.

To access Special Programming Mode, perform the following
procedure:

1. Turn the unit power switch to OFF.

2. Press and hold the program button as you turn the power
switch to ON.

“SPrg” displays.

After accessing Special Programming Mode, “CodE” displays
and then “0 - - -” displays.

1. Use the UP/DOWN buttons once to increment the number
to 1.

2. Once the correct number displays, press the P button to
select the value and continue to the next number.

3. Use the UP/DOWN buttons once to increment the number
to 2 and press the P button.

4. Use the UP/DOWN buttons once to increment the number
to 3 and press the P button.

5. Use the UP/DOWN buttons once to increment the number
to 4 and press the P button.

Special Programming Mode has been activated.

If an incorrect value is entered, “bad” and “CodE” alternate
on the display. Press any button to resume normal mode.

2-1Oct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

2-4. PROGRAMMING
DESCRIPTIONS

Always press the P button to advance to the next step.

Press and hold the P button at any time to exit Special Programming mode.

Description Action

1. °F/°C Press the UP/DOWN button to toggle the mode.

2. Int/USA Press the UP/DOWN button to toggle between International and
Domestic Unit.

3. Unit Type

Press the UP/DOWN button to toggle between the Unit Types.

(554/222/21L/22/1L)

4. Set point for top heater Press the UP/DOWN button to increment/decrement the set point value.

5. Set point for bottom heater Press the UP/DOWN button to increment/decrement the set point value.

6. Set point for side heater Press the UP/DOWN button to increment/decrement the set point value.

7. CPU temperature Press UP/DOWN button to view highest board temperature.
The actual board temperature displays.

8. Outputs test 1. Use the DOWN button to toggle the heat outputs on/o.

2. Use the UP button to move on to the next step.

3. Use the DOWN button to toggle each of the other three heaters ON/

OFF.

4. Use the UP button to advance to the next step.

The display will show which heater is being tested as follows: OP-
1, top heater. OP-2, bottom heater. OP-3, side heater.

“OP-0” displays with no heater outputs on and “OP-A” displays
when all the heater outputs are on.

9. Initialization “ InI” displays.

1. Press and hold the UP/DOWN button to initialize the control back to

defaults.
The display counts down “In-3”, “In-2”, In-1”, and then “ InI”, “
SyS”, “donE”.

2. Release UP/DOWN when “InI”, “SyS” displays.

Control is now initialized.

3. Wait 2 seconds before turning o power after initialization.

2-2Oct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

SECTION 3. MAINTENANCE

3-1. INTRODUCTION

3-2. MAINTENANCE HINTS

3-3. CONTROL BOARD

This section provides procedures for the checkout and replace­ment of the various parts used in the cabinet. Before replacing
any parts, refer to the Troubleshooting section. It will aid you in
determining the cause of the malfunction.

1. You may want to use an ohmmeter or voltmeter to check
the electric components.

2. When the manual refers to the circuit being closed, the

ohmmeter should read zero unless otherwise noted.

3. When the manual refers to the circuit being open, the ohm

meter will read innity.

4. When tesing the solid state relay, use the voltmeter procedure.

To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.

Figure 1

1. Locate the control access panel on the side of the unit and
using a Phillip’s-head screwdriver, or a #8 Torx socket, re
move the 2 screws securing the panel. Figure 1. Slide panel
out.

Checkout:

To avoid electrical shock, make connections before
applying power, take reading, and remove power before
removing meter leads. The following checks are per­ formed with the wall circuit breaker closed and the
main power switch in the ON position.

a. If control has no display, but recieving 12 volts at P3
connector, replace control board.
b. If zone LED is red, but no 5 vdc shows at associated

relay, check all connections, relay polarity, and then replace
control board if necessary.

c. If zone LED is green, and 5 vdc shows at associated

relay, then replace control board
d. If any of the error codes persists, but the components are
OK, replace control board.

3-1Oct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

3-3. CONTROL BOARD
(Continued)

Figure 2

Replacement:

2. Disconnect the two large, white connectors and remove
component panel from unit.

3. Remove the connectors to the control board. Figure 2.

4. Using a 1/4” socket or wrench, remove the 4 nuts securing
the control board to the panel and remove control board from
panel. Figure 3.

Figure 3

3-4. TRANSFORMER

5. Install new control board in reverse order.

Do not over-tighten the nuts securing the control board, or
the buttons on the controls may not function.

To avoid electrical shock or property damage, move the

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

1. Slide the component panel out as described in the rst step

in Section 2-3.

Checkout:

To avoid electrical shock, make connections before
applying power, take reading, and remove power before
removing meter leads. The following checks are per­ formed with the wall circuit breaker closed and the
main power switch in the ON position.

3-2 FM06-038-BSept. 2007

Model MPC-1L, MPC-22, MPC-554

3-4. TRANSFORMER
REPLACEMENT
(Continued)

Figure 2

3-5. RELAY REPLACEMENT

Checkout (Continued)

If transformer has 120V at the primary terminals, but more than
14 volts, or less than 10 volts at secondary terminals, replace
transformer.

Replacement:

2. Disconnect the two large, white connectors and remove
component panel from unit.

3. Once component panel is removed, label and disconnect
the wires from the transformer.

4. Using a 5/16” socket or wrench, remove the 2 nuts securing
the transformer and pull transformer from panel. Figure 2.

5. Install new control board in reverse order.

To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.

Figure 1

1. Slide the component panel out as described in the rst step

in Section 2-3.
Checkout:

To avoid electrical shock, make connections before
applying power, take reading, and remove power before
removing meter leads. The following checks are per­ formed with the wall circuit breaker closed and the
main power switch in the ON position.

2. Remove the relay cover from the relay. Figure 1.

Do not use an ohmmeter to check solid state relays. Use a
voltmeter in the procedures below.

3. With no power (5 vdc) going to the relay, 120 volts should
show on the output side of the relay, and 0 volts on the
input (5 volts). If no 120 volts, check heater page 2-6.)

3-3Oct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

3-5. RELAY REPLACEMENT
(Continued)

4. With the component energized, 0 volts should show on the

output side of the relay, and 5 vdc on the input side. Also,
check for correct polarity into the relay-reference wiring
diagram.

5. If voltage varies from steps 3 and 4, remove power to unit
pull input wires from relay and place leads of meter onto
input wires. Reapply power to unit. When unit is running,

if the input wires to relay shows 5vdc, the relay is faulty.

6. Uplug power cord to unit.

7. Label and remove wires from relay. Figure 2.

Figure 2

Figure 3

8. Using a 5/16” socket or wrench, remove the 2 nuts securing
the relay and pull relay from panel. Figure 3.

9. Install new relay in reverse order, making sure not to reverse
the polarity on the relays - reference wiring diagram.

3-4Oct. 2018 FM06-038-B

Model MPC-1L, MPC-22, MPC-554

3-6. POWER SWITCH & LED
REPLACEMENT

To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.

Power Switch Checkout:

1. Locate the small access panel on the side of the unit and using
a Phillip’s-head screwdriver, loosen the screw securing the
panel and allow panel to hang out of the way. Figure 1.

Figure 1

Figure 2

2. Using a at-blade screwdriver, insert the screwdriver through

the side access and press on the power switch mounting tabs,
and then pull the power switch out from the front of the unit.
Figure 2.

3. Label and remove the wires from the switch. Check for
continuity across the top and bottom terminals. With the
switch in the ON position, the circuit should be closed.
With the switch in the OFF position, the circuit should be
open. If the switch is defective, replace it by installing new
switch in reverse order.

LED Replacement

1. Remove access panel per step 1 above.

2. Using a nut-driver, insert the nut-driver through the side
access and remove the nut securing the light, and then pull
the light out from the front of the unit. Figure 3.

Figure 3

3. Pull the wires out far enough to reach the wire nuts. Label
wires and remove the wire nuts and remove light from unit.

4. Install new light in reverse order, making sure not to
reverse the LED wires. When unit is operating, the LED is
red, below set- point temperature and green above set-point
temperature.

3-5 FM06-038-BSept. 2007

Model MPC-1L, MPC-22, MPC-554

3-7. MPC-554 LINER/HEATER
ASSY. REPLACEMENT

Figure 1

To avoid electrical shock or property damage, move the
power switch to OFF and disconnect main circuit
breaker, or unplug cord at wall receptacle.

Checkout:

1. Slide the component panel out as described in the rst step

in Section 2-3.

To avoid electrical shock, make connections before
applying power, take reading, and remove power before
removing meter leads. The following checks are per­ formed with the wall circuit breaker closed and the
main power switch in the ON position.

2. Remove the relay cover from the relay.

Figure 2

3. Refer to wiring diagram page 2-9, and with the outputs on,
check across terminal #1 of the appropriate relay and the
neutral wire, N5 at the transformer. If meter shows full
voltage (120V), but heater is not heating, the heater and
liner assembly must be replaced.

The heater is sealed to the liner assembly, so the appropri­ ate liner and heater assembly must be replaced if the heater
is faulty.

Replacement:

4. Using a Phillip’s-head screwdriver, or a #8 Torx socket
(MS01-514), remove the 16 screws around the perimeter
of the enclosure & the 2 screws securing the power cord.
Figure 1.

5. Pull component panel from unit and disconnect the two,
white connectors, and remove component panel from unit.
Figure 2.

Figure 3

6. Pull cabinet enclosure from unit. Figure 3.

3-6 FM06-038-BJuly 2011

Model MPC-1L, MPC-22, MPC-554

3-7. MPC-554 LINER/HEATER
ASSY. REPLACEMENT
(Continued)

7. Using a 5/16” socket or wrench, remove the 5 nuts on the
rear of the front panel. Figure 4.

Figure 4

Figure 5

8. Using a 1/8” drill bit, drill-out the pop-rivets securing the
bottom of the front panel and then remove front panel from
unit. Figure 5.

Figure 6

9. Remove the screws securing the liner(s) to the liner
supports. (The lower screws too, if the lower liner
assembly is to be replaced.) Figure 6.

3-7 FM06-038-BJuly 2011

Model MPC-1L, MPC-22, MPC-554

3-7. MPC-554 LINER/HEATER
ASSY. REPLACEMENT
(Continued)

Figure 7

10. Pull the liner assembly from unit (Figure 7). If the lower
liner assembly needs replaced, remove the top liner, drill­ out the 3 pop rivets (see step 5) holding the side support to
the base, and then pull the lower assembly from unit and
replace in reverse order.

If the single liner needs replaced, drill-out the 3 pop rivets
holding the side support to the base and pull the single
assembly out and replace in reverse order.

11. Using 1/8” pop-rivets, pop-rivet the liners to the side,
bottom liner supports, if needed. (3 on each side.)

12. Using the screws removed in step 6, secure the liner to the
liner supports, and then pop-rivet the front panel to the unit.

13. Replace nuts on front panel, from step 4.

3-8. MPC-22 & MPC-1L
LINER/HEATER ASSY.
REPLACEMENT

14. Reconnect component panel and place into unit.

15. Reinstall cabinet enclosure and secure with screws removed
in step 1, and unit is now ready for use.

For possible heater or temperature sensor failure on MPC-22
and MPC-1L’s, please call Technical Support at 1-800-417­8405/ 1-937-456-8405, or [e-mail].

3-8 FM06-038-BSept. 2011

3-9. WIRING DIAGRAMS

Model MPC-1L, MPC-22, MPC-554

MPC-554

3-9 FM06-038-BJune 2011

Model MPC-1L, MPC-22, MPC-554

HEATER OHM READINGS @ ROOM TEMP

MIN NOM MAX

MPC-1L 124.36 130.91 137.45
MPC-22 68.40 72.00 75.60

3-10 FM06-038-BJuly 2011

Model MPC-1L, MPC-22, MPC-554

SECTION 3. PARTS INFORMATION

3-1. INTRODUCTION This section lists the replaceable parts of the Henny Penny

MPC units.

3-2. GENUINE PARTS Use only genuine Henny Penny parts in your cabinet. Using
a part of lesser quality or substitute design may result in
damage to the unit, or personal injury.

3-3. WHEN ORDERING PARTS Once the parts that you want to order have been found in the
parts list, write down the following information:

Example: Item Number 8
Part Number 63464
Description Switch - Power

From data plate, list the following information:

Example: Product Number MPC554
Serial Number AW001IE
Voltage 120 Volt

3-4. PRICES Your distributor has a price list and will be glad to inform
you of the cost of your parts order.

3-5. DELIVERY Commonly replaced items are stocked by your local
distributor and will be sent out when your order is received.
Other parts will be ordered, by your distributor, from Henny
Penny Corporation.

3-6. WARRANTY All replacement parts (except lamps and fuses) are warranted
for 90 days against manufacturing defects and workmanship.
If damage occurs during shipping, notify the carrier at once

so that a claim may be properly led. Refer to warranty in

the front of the manual for other rights and limitations.

Recommended replacement parts, stocked by your distributor,

3-7. RECOMMENDED

are indicated with √ in the parts lists. Please use care when
ordering recommended parts, because all voltages and varia-
tions are marked. Distributors should order parts based upon
common voltages and equipment sold in their territory.

SPARE PARTS FOR
DISTRIBUTORS

4-1 FM06-038-BJune 2007

Model MPC-1L, MPC-22, MPC-554

MPC-554/MPC-1L/MPC-22

Item No. Part No. Description Quantity

 B 1 30978 Transformer Assembly - 120VP-12VS-20VP 1
 A 2 40645 Relay - 25A - Solid State As Required
 B 3 73602 Control - MPC 1

Recommended Parts: A=Truck Stock/B=Dist. Stock

4-2 FM06-038-BJuly 2011

Model MPC-1L, MPC-22, MPC-554

4 5 6 7 8 9 10

MPC-554

9

8

7

5

11

4

9

8

MPC-1L

Quantity
Item No. Part No. Description 554 1L 22

B 4 71851 Pan - Small MPC 10 - 4
 B 5 71850 Pan - Large MPC 4 1 -
 6 53656 Cord - Power 1 1 1
 7 74129 Decal - Power Switch - Left - MPC-554 & MPC-1L 1 1 -

 7 72774 Decal - Power Switch - Right - MPC-554 1 - ­ A 8 63464 Switch - Power 1 1 1
A 9 LS72-000 Indicator - Bi-Color Panel Mount 1 1 1
 10 69608 Decal - Control - MPC-554/MPC-1L/MPC-22 1 1 1
11 88814 Decal - Power Switch - MPC-22 1 - 1
12 ME50-021 Terminal Block - MPC-554 (not shown) 2 - -

MPC-22

Note: For possible heater or temperature sensor failure on MPC-22 and MPC-1L’s, please call Technical

Support at 1-800-417-8405/ 1-937-456-8405, or [e-mail].

Recommended Parts: A=Truck Stock/B=Dist. Stock

4-3 FM06-038-BMay 2013

Model MPC-1L, MPC-22, MPC-554

Quantity
Item No. Part No. Description 554 1L 22



- 140566 Kit-MPC22/222 Heater 230V Top - - 1

- 140567 Kit-MPC22 Heater 230V Bottom - - 1

- 140568 Kit-MPC222 Heater 230V Bottom - - 1

- 140197 Kit-MPC554 Liner Top LH 120V 1 - -

- 140198 Kit-MPC554 Liner Bot LH 120V 1 - -

- 140199 Kit-MPC554 Liner Short LH 120V 1 - -

- 140200 Kit-MPC554 Liner Top RH 230V 1 - -

- 140201 Kit-MPC554 Liner Bot RH 230V 1 - -

- 140202 Kit-MPC554 Liner Short RH 230V 1 - -

- 140203 Kit-MPC554 Liner Top LH 230V 1 - -

- 140204 Kit-MPC554 Liner Bot LH 230V 1 - -

- 140205 Kit-MPC554 Liner Short LH 230V 1 - -

- 14910 Kit-MPC554 Liner Top RH 120V 1 - -

- 14911 Kit-MPC554 Liner Bot RH 120V 1 - -

- 14912 Kit-MPC554 Liner Short RH 120V 1 - -

- 91699-001 Assy-MPC1L Liner 120V* - 1 -

- 91699-002 Assy-MPC1L Liner 230V* - 1 -

- 91996-003 Assy-MPC1L Liner 100V* - 1 -

- 165496-001 Assy-MPC1L Liner 120V - 1 -

- 165496-002 Assy-MPC1L Liner 230V - 1 -

- 165496-003 Assy-MPC1L Liner 100V - 1 -

- 28979 Transformer 208/240VP 12VS - 1 1

- 165535-001 Assy- MPC22 Liner Bottom 120V - - 2

- 165535-002 Assy- MPC22 Liner Bottom 230V - - 2

- 165535-003 Assy- MPC22 Liner Bottom 100V - - 2

- 91690-001 Assy- MPC22 Liner Top 120V* - - 2

- 91690-002 Assy- MPC22 Liner Top 230V* - - 2

- 91690-003 Assy- MPC22 Liner Top 100V* - - 2

- 91691-001 Assy- MPC22 Liner Bottom 120V* - - 2

- 91691-002 Assy- MPC22 Liner Bottom 230V* - - 2

- 91691-003 Assy- MPC22 Liner Bottom 100V* - - 2

- 165534-001 Assy- MPC22 Liner Top 120V - - 2

- 165534-002 Assy- MPC22 Liner Top 230V - - 2

- 165534-003 Assy- MPC22 Liner Top 100V - - 2

* Applies on units manufactured prior to June 2017.

Note: For possible heater or temperature sensor failure on MPC-22 and MPC-1L’s, please call Technical

Support at 1-800-417-8405/ 1-937-456-8405, or [e-mail].

Recommended Parts: A=Truck Stock/B=Dist. Stock

4-4 FM06-038-BOct. 2018

Henny Penny Corporation
P.O. Box 60
Eaton, OH 45320

1-937-456-8400
1-937-456-8402 Fax

Toll free in USA
1-800-417-8417
1-800-417-8434 Fax

*FM06-038-B*

Revised October 2018

www.hennypenny.com