merco MHC-22 Visual Holding Cabinet Instruction Manual

merco MHC-22 Visual Holding Cabinet

Visual Holding Cabinet (MHC)
Specifications:

• Part Number : MER_P_8197459
• Power Supply : 120V
• Heater Pad Wattage : 140W-200W
• Speaker: 4 ohm
• Communication: WIFI, RFID Reader

Product Information

The Visual Holding Cabinet (MHC) is designed to maintain the quality of food items by keeping them at the desired temperature until they are served. It consists of various components such as control kits, power supplies, heater pads, antennas, and more to ensure efficient operation.

Product Usage Instructions

Assembly :

1. Verify all parts listed in the manual are present.
2. Follow the assembly instructions to put together the cabinet components.
3. Ensure proper placement of heater pads and antennas for optimal performance.

Powering On:

1. Connect the power cord to a suitable power outlet.
2. Switch on the power using the designated switch on the cabinet.
3. The control panel should light up, indicating the cabinet is powered on.

Temperature Settings:

1. Use the touchscreen UI to set the desired temperature for the cabinet.
2. Allow some time for the cabinet to reach the set temperature.
3. Monitor the temperature display to ensure it stays within the desired range.

Cleaning and Maintenance:

1. Regularly clean the cabinet using a mild detergent and a soft cloth.
2. Inspect the components for any signs of wear or damage.
3. Schedule periodic maintenance checks as recommended in the manual.

FAQ :

1. Q: How do I troubleshoot if the cabinet is not heating up?
   A: Check the power supply, heater pads, and wiring connections for any issues. Ensure all components are functioning correctly and are properly connected.

2. Q: Can I adjust the temperature settings remotely?
   A: Depending on the model, some MHC units may have remote temperature adjustment capabilities through the WIFI connection. Refer to the specific manual for detailed instructions.

Visual Holding Cabinet (MHC)

Parts Manual

This manual is updated as new information and models are released. Visit our website for the latest manual.

Part Number: MER_P_8197459 05/2023

NOTICE

IF, DURING THE WARRANTY PERIOD, THE CUSTOMER USES A PART FOR THIS WELBILT EQUIPMENT OTHER THAN AN UNMODIFIED NEW OR RECYCLED PART PURCHASED DIRECTLY FROM MERCO, OR ANY OF ITS FACTORY AUTHORIZED SERVICERS, AND/OR THE PART BEING USED IS MODIFIED FROM ITS ORIGINAL CONFIGURATION, THIS WARRANTY WILL BE VOID. FURTHER, MERCO AND ITS AFFILIATES WILL NOT BE LIABLE FOR ANY CLAIMS, DAMAGES OR EXPENSES INCURRED BY THE CUSTOMER WHICH ARISE DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, DUE TO THE INSTALLATION OF ANY MODIFIED PART AND/OR PART RECEIVED FROM AN UNAUTHORIZED SERVICER.

Replacement Parts List

Part Number| Description|
8263513| Kit, Control, MHC UI Touch| Critical
8076202| Switch, DPDT| Critical
8076204| Contactor, 120v 40A 2P 5×2, 5×4| Critical
8263480| Board, Merco CFA I/O| Critical
8076303| Delta Power Supply| Critical
8076208| Board, RFID Reader|
8076211| Heater Pad, MHC 2X2 , 2×4|
8076212| Board, MHC Power & Comm 2×2, 2×4|
8076173| Speaker, 4 ohm w/filter|
8076226| Dongle, MHC WIFI|
8076234| Heater Pad, MHC 5X2, 2×2 120v 200w|
8076235| Heater Pad, MHC 5X4 Rt. 120v 140w|
8076236| Heater Pad, MHC 5X4 Lt. 120v 140w|
8076298| Antenna Assy, MHC Center w/gnd 2×4, 5×4|
1087852SP| Antenna Assy, MHC LH Short w/gnd 2×2, 2×4|
1087853SP| Antenna Assy, MHC RH Short w/gnd 2×2, 2×4|
1087945SP| Antenna Assy, MHC LH Long w/gnd 5×2, 5×4|
1087946SP| Antenna Assy, MHC RH Long w/gnd 5×2, 5×4|

MHC-22 Common Components

| Item| Description| Part Number| Note
---|---|---|---|---
| 1| PLATE, ELECTRONICS MHC 2X2| 1087662|
| 2| BRACKET, TOUCHSCREEN| 2601832|
| 3| ASSY, DISPLAY PLATE COVER| 1087649|
| 4| BRACKET, MHC SPEAKER| 2601926|
| 5| TOWER, MHC 2X2 LEFT| 2601950|
| 6| TOWER, MHC 2X2 RIGHT| 2601951|
| 7| BASE, MHC 2X2 TOP| 2601954|
| 8| BASE, MHC 2X2 BOTTOM| 2601956|
| 9| PANEL, MHC 2X2 TOP| 2601957|
| 10| PANEL, MHC 2X2 RT SIDE| 2601958|
| 11| PANEL, MHC 2X2 LT SIDE| 2601959|
√| 12| BOARD, MERCO CFA I/O| 8263480|
| 13| ANTENNA ASSY, MHC LH SHORT| 1087852SP|
| 14| ANTENNA ASSY, MHC RH SHORT| 1087853SP|
| 15| HOUSING ASSY, CONTROLS W/LATCH & CHANNELS| 1087622|
| 16| BRACKET, POWER SUPPLY MHC 2X2| 1087665|
| 17| SHELF ASSY, MHC 2X2 UPPER| 1087629|
| 18| INSULATION, TOP MHC 2X2| 8161144|
| 19| INSULATION, TOWER MHC 2X2| 8161141|
| 20| BRACKET, MHC USB SPACER| 2601980|
√| 21| POWER SUPPLY, 12VDC 30W MHC| 8076303|
| 22| INSULATION, MHC 2X2 BOTTOM/BASE| 8161139|
| 23| GASKET, MHC WIFI COVER| 8161133|
| 24| COVER, MHC WIFI| 8161132|
| 25| SPEAKER, 4 OHM, FILTER, VHC| 8076173|
| 26| BUSHING, .875 DIA, HOLE 11/16| 8100045|
| 27| DONGLE, MHC WIFI LM808| 8076226|
√| 28| CONTROL, MHC UI TOUCH UX| 8263676|
| 29| TERMINAL BLOCK, 3 POLE QUICK CONNECT| 8076213|
| Item| Description| Part Number| Note
---|---|---|---|---
| 30| BOARD, MHC POWER & COMM| 8076212|
√| 31| HEATER PAD, MHC 2X2| 8076211|
√| 32| SWITCH, DPDT| 8076202|
| 33| BOARD, RFID READER| 8076208|
| 34| SHELF, MHC 2X2 HEATER| 8104819|
| | CABLE, COMMUNICATION 8 CONDUCTOR RJ-45| 8076011|
| | ANTENNA, MHC 36″ COAX SIDE| 8076156|
| | CABLE, USB PANEL MOUNT 3′| 8076172|
| | CORD,POWER,NEMA 5-15,MHC| 8076177|
| | CABLE, CROSSOVER POWER| 8076179|
| | HARNESS, AC POWER 2X2| 8076192|
| | JUMPER, TOUCH SCREEN ID 2X2M| 8076195|
| | HARNESS, DC POWER 2X2| 8076199|
| | SD CARD CFA CRITICAL LINK| 8122549|
| | SD CARD CFA ULTRATRONIK| 8122638|

• *  Not Illustrated
• √ Critical Parts

MHC-22L Common Components

| Item| Description| Part Number| Note
---|---|---|---|---
| 1| ELECTRONICS PLATE, MHU| 1087838|
| 2| BRACKET, TOUCHSCREEN| 2601832|
| 3| ASSY, DISPLAY PLATE COVER| 1087649|
√| 4| HEATER PAD, MHC 2X2| 8076211|
| 5| TOWER, MHC 2X2L| 2602095|
| 6| BOARD, RFID READER| 8076208|
| 7| BASE, MHC 2X2L TOP| 8242470|
| 8| BASE, MHC 2X2L BOTTOM| 1087842|
| 9| PANEL, MHC 2X2 TOP| 2602099|
| 10| PANEL, MHC 2X2 LT SIDE| 2602096|
| 11| SHELF, MHC 2X2 HEATER| 8104819|
√| 12| BOARD, MERCO CFA I/O| 8263480|
| 13| ANTENNA ASSY, MHC LH SHORT| 1087852SP|
| 14| ANTENNA ASSY, MHC RH SHORT| 1087853SP|
| 15| HOUSING ASSY, CONTROLS W/LATCH & CHANNELS| 1087841|
| 16| BOARD, MHC POWER & COMM| 8076212|
| 17| SHELF ASSY, MHC 2X2 UPPER| 1087629|
| 18| INSULATION, TOP MHC 2X2| 8161144|
| 19| INSULATION, TOWER MHC 2X2| 8161141|
√| 20| SWITCH, DPDT| 8076202|
√| 21| POWER SUPPLY, 12VDC 30W MHC| 8076303|
| 22| INSULATION, MHC 2X2 BOTTOM/BASE| 8161139|
| 23| GASKET, MERCO WIFI COVER| 8161152|
| 24| COVER, MERCO WIFI| 8161157|
| Item| Description| Part Number| Note
---|---|---|---|---
| 25| SPEAKER, 4 OHM, FILTER, VHC| 8076173|
| 26| BUSHING, .875 DIA, HOLE 11/16| 8100045|
| 27| DONGLE, MHC WIFI LM808| 8076226|
√| 28| CONTROL, MHC UI TOUCH UX| 8263676|
| 29| TERMINAL BLOCK, 3 POLE QUICK CONNECT| 8076213|
| 30| CABLE, USB PANEL MOUNT 3′| 8076172|
| | CABLE, COMMUNICATION 8 CONDUCTOR RJ-45| 8076011|
| | CORD,POWER,NEMA 5-15,MHC| 8076177|
| | CABLE, CROSSOVER POWER| 8076179|
| | HARNESS, AC POWER 2X2| 8076192|
| | HARNESS, DC POWER 2X2| 8076199|
| | JUMPER, MHC SCREEN ID 2X2L-M| 8076307|
| | SD CARD CFA CRITICAL LINK| 8122549|
| | SD CARD CFA ULTRATRONIK| 8122638|

• *  Not Illustrated
• √ Critical Parts

MHC-24 Common Components

| Item| Description| Part Number| Note
---|---|---|---|---
| 1| PLATE, ELECTRONICS MHC 2X4| 1087766|
| 2| BRACKET, TOUCHSCREEN| 2601832|
| 3| ANTENNA, MHC CENTER GND| 8076298|
| 4| BRACKET, MHC SPEAKER| 2601926|
| 5| TOWER, MHC 2X2 LEFT| 2601950|
| 6| TOWER, MHC 2X4 RH| 2601989|
| 7| BASE, MHC 2X2 TOP| 8242456|
| 8| BASE, MHC 2X2 BOTTOM| 1087669|
| 9| PANEL, MHC 2X2 TOP| 2602057|
| 10| PANEL, MHC 2X2 RT SIDE| 2601958|
| 11| PANEL, MHC 2X2 LT SIDE| 2601959|
√| 12| BOARD, MERCO CFA I/O| 8263480|
| 13| ANTENNA ASSY, MHC LH SHORT GND| 1087852SP|
| 14| ANTENNA ASSY, MHC RH SHORT GND| 1087853SP|
| 15| HOUSING ASSY, MHC 2X4 CONTROLS| 1087789|
| 16| BRACKET, POWER SUPPLY MHC 2X2| 1087665|
| 17| SHELF, MHC 2X4 LOWER| 1087781|
| 18| INSULATION, MHC 2X4 TOP| 8161145|
| 19| INSULATION, TOWER MHC 2X2| 8161141|
| 20| SHELF, MHC 2X4 HEATER| 8104820|
√| 21| POWER SUPPLY, 12VDC 30W MHC| 8076303|
| 22| INSULATION, MHC 2X4 BOTTOM| 8161140|
| 23| GASKET, MERCO WIFI COVER| 8161152|
| 24| COVER, MERCO WIFI| 8161157|
| Item| Description| Part Number| Note
---|---|---|---|---
| 25| SPEAKER, 4 OHM WITH FILTER, VHC| 8076173|
| 26| BUSHING, .875 DIA, HOLE 11/16| 8100045|
| 27| DONGLE, MHC WIFI LM808| 8076226|
√| 28| CONTROL, MHC UI TOUCH UX| 8263676|
| 29| TERMINAL BLOCK, 3 POLE QUICK CONNECT| 8076213|
| 30| BOARD, MHC POWER & COMM| 8076212|
√| 31| HEATER PAD, MHC 2X2| 8076211|
√| 32| SWITCH, DPDT| 8076202|
| 33| BOARD, RFID READER| 8076208|
| | CABLE, COMMUNICATION 8 CONDUCTOR RJ-45| 8076011|
| | CABLE, USB PANEL MOUNT 3′| 8076172|
| | CORD,POWER,NEMA 5-15,MHC| 8076177|
| | CABLE, CROSSOVER POWER| 8076179|
| | CABLE, COMMUNICATION UI TO UI (ONLY ON UNITS with 2 UI’s) (2×4 & 5×4)| 8076181|
| | HARNESS, AC POWER 2X4| 8076193|
| | HARNESS, DC POWER 2X4| 8076194|
| | JUMPER, TOUCH SCREEN ID 2X4 MASTER (FRONT)| 8076196|
| | JUMPER, TOUCH SCREEN ID 2X4 SLAVE (REAR)| 8076198|
| | SD CARD CFA CRITICAL LINK| 8122549|
| *| SD CARD CFA ULTRATRONIK| 8122638|

• *  Not Illustrated
• √ Critical Parts

MHC-52 Common Components

| Item| Description| Part Number| Note
---|---|---|---|---
| 1| BRACKET, MHC 5X2 ELECTRONICS| 2401628|
| 2| BRACKET, TOUCHSCREEN| 2601832|
| 3| BASE, MHC 5X2 TOP| 8242447|
| 4| TOWER, MHC 5X2 RIGHT| 2601905|
| 5| TOWER, MHC 5X2 LEFT| 2601906|
| 6| BRACKET, MHC SPEAKER| 2601926|
| 7| BASE, ASSY MHC 5X2 BOTTOM| 1087606|
| 8| ANTENNA ASSY, MHC LH LONG| 1087945SP|
| 9| ANTENNA ASSY, MHC RH LONG| 1087946SP|
| 10| INSULATION, TOWER MHC 5X4| 8161134|
| 11| INSULATION, MHC 5X2 BOTTOM| 8161136|
| 12| INSULATION, TOP MHC 5-HIGH| 8161143|
| 13| PANEL, MHC 5X2 SIDE| 2601930|
| 14| PANEL, MHC 5X2 TOP| 2601931|
| 15| SHELF, ASSY MHC 5X2 UPPER| 1087619|
| 16| PANEL, MHC 5X2 RH SIDE| 2601955|
| 17| LOWER SHELF ASSY, MHC 5X2| 1087616|
| 18| BRACKET, MHC USB SPACER| 2601980|
√| 19| POWER SUPPLY, 12VDC 30W MHC| 8076303|
| 20| COVER, MHC WIFI| 8161132|
| 21| GASKET, MHC WIFI COVER| 8161133|
| 22| SPEAKER, 4 OHM, FILTER, VHC| 8076173|
√| 23| SWITCH, DPDT| 8076202|
| 24| SHELF, HEATER MHC 5X2| 8104824|
√| 25| CONTACTOR, 120V 40A 2P| 8076204|
| 26| BOARD, RFID READER| 8076208|
| Item| Description| Part Number| Note
---|---|---|---|---
√| 27| CONTROL, MHC UI TOUCH UX| 8263676|
√| 28| BOARD, MERCO CFA I/O| 8263480|
| 29| DONGLE, MHC WIFI LM808| 8076226|
√| 30| HEATER, MHC 5X2 120V 200W| 8076234|
| | CABLE, USB PANEL MOUNT 3′| 8076172|
| | JUMPER, TOUCH SCREEN ID 5X2M| 8076184|
| | HARNESS, DC POWER 5X2| 8076185|
| | HARNESS, AC POWER 5X2| 8076186|
| | CORD, POWER 5-20P 90 DEGREE| 8076190|
| | SD CARD CFA CRITICAL LINK CRITICAL LINK| 8122549|
| *| SD CARD CFA ULTRATRONIK| 8122638|

• *  Not Illustrated
• √ Critical Parts

MHC-54 Common Components

| Item| Description| Part Number| Note
---|---|---|---|---
| 1| PLATE, ELECTRONICS MHC 5X4| 1087661|
| 2| BRACKET, TOUCHSCREEN| 2601832|
| 3| BASE, ASSY MHC 5X4 TOP| 8242451|
| 4| TOWER, MHC 5X4 RIGHT| 2601890|
| 5| TOWER, MHC 5X4 LEFT| 2601891|
| 6| INSULATION, MHC 5X4 BASE| 8161135|
| 7| INSULATION, TOP MHC 5-HIGH| 8161143|
| 8| LOWER SHELF ASSY, MHC 5X4| 1087643|
| 9| CONTROL HOUSING, MHC 5X4| 1087642|
| 10| PANEL, TOP MHC 5X4| 2601897|
| 11| BASE, ASSY MHC 5X4 BOTTOM| 1087638|
| 12| READER, MHC BOARD MOUNT| 2601921|
| 13| ANTENNA ASSY, MHC LH LONG GND| 1087945SP|
| 14| ANTENNA ASSY, MHC RH LONG GND| 1087946SP|
| 15| BRACKET, MHC SPEAKER| 2601926|
| 16| PANEL, SIDE MHC 5X4| 2601927|
| 17| COVER, MHC WIFI| 8161132|
| 18| BRACKET, MHC USB SPACER| 2601980|
| 19| GASKET, MHC WIFI COVER| 8161133|
√| 20| POWER SUPPLY, 12VDC 30W MHC| 8076303|
| 21| INSULATION, TOWER MHC 5X4| 8161134|
| 22| SHELF, HEATER MHC 5X4| 8104825|
| 23| ANTENNA, MHC CENTER| 8076298|

| Item| Description| Part Number| Note
---|---|---|---|---
| 24| HEATER, MHC 5X4 120V 140W LH| 8076236|
| 25| SPEAKER, 4 OHM, FILTER, VHC| 8076173|
√| 26| HEATER, MHC 5X4 120V 140W R| 8076235|
| 27| DONGLE, MHC WIFI LM808| 8076226|
√| 28| BOARD, MERCO CFA I/O| 8263480|
√| 29| CONTROL, MHC UI TOUCH UX| 8263676|
| 30| BOARD, RFID READER| 8076208|
√| 31| CONTACTOR, 120V 40A 2P| 8076204|
√| 32| SWITCH, DPDT| 8076202|
| | CABLE, COMMUNICATION 8 CONDUCTOR RJ-45| 8076011|
| | CABLE, USB PANEL MOUNT 3′| 8076172|
| | CABLE, CROSSOVER POWER| 8076179|
| | CABLE, COMMUNICATION UI TO UI (ONLY ON UNITS with 2 UI’s) (2×4 & 5×4)| 8076181|
| | JUMPER, TOUCH SCREEN ID 5X4M| 8076182|
| | JUMPER, TOUCH SCREEN ID 5X4S| 8076183|
| | HARNESS, DC POWER 5X4| 8076187|
| | HARNESS, AC POWER 5X4 RIGHT| 8076188|
| | HARNESS, AC POWER 5X4 LEFT| 8076189|
| | ASSY,10/3 CORD,L5-30P,8′| 8076216|
| | SD CARD CFA CRITICAL LINK| 8122549|
| | SD CARD CFA ULTRATRONIK| 8122638|

• *  Not Illustrated
• √ Critical Parts

MERCO
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• Serving Quality on Demand
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• Welbilt offers fully-integrated kitchen systems. Welbilt’s portfolio of award-winning brands includes Cleveland™, Convotherm®, Crystal Tips®, Dean®, Delfield®, Fabristeel®, Frymaster®, Garland®, Inducs®, Koldtech®, Kolpak®, Lincoln®, McCann’s™, Merco®, Merrychef®, Multiplex®, RDI®, SerVend™, SunFire®, U.S. Range™ and WMaxx™. These product brands are supported by these service brands: FitKitchen®, our fully-integrated kitchen systems brand, and KitchenConnect®, our cloud-based digital platform brand.

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©2023 Welbilt Inc. except where explicitly stated otherwise. All rights reserved. Continuing product improvement may necessitate change of specifications without notice. Part Number: MER_P_8197459 05/2023

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