MHG22 Series MercoMax Forced Air Holding Cabinet Instruction Manual
- June 1, 2024
- Merco
Table of Contents
MHG22 Series MercoMax Forced Air Holding Cabinet
Product Infomation
- Specifications:
- Product Name: MercoMax Forced Air Holding Cabinet (MHG)
- Part Number: MER_P_8197432
- Heater Assembly: 120V, 700W for MHG22 with Timer Bars / 120V, 450W for MHG22 without Timer Bars
- Power Supply: 12VDC, 30W for MHG22 with Timer Bars / 12VDC, 65W for MHG22 without Timer Bars
- Tray Insert: Not supplied with domestic units
Product Usage Instructions
- Assembly Instructions:
- Ensure all components are available as per the parts manual.
- Follow the assembly steps provided in the manual for the specific model (MHG22 with Timer Bars or without Timer Bars).
- Securely attach the cover panels and insert any required tray inserts.
- Powering Up the Cabinet:
- Connect the appropriate power supply based on the model (MHG22 with Timer Bars or without Timer Bars).
- Switch on the rocker switch and ensure the cabinet is receiving power.
- Temperature Control:
- Set the desired temperature using the membrane switch on the cabinet.
- Monitor the temperature levels using the display panel if available.
FAQs
- Q: Are tray inserts included with the unit?
- A: Tray inserts are not supplied with domestic units. They need to be purchased separately if required.
- Q: What is the power supply specification for the cabinet?
- A: The power supply is 12VDC, 30W for MHG22 with Timer Bars and 12VDC, 65W for MHG22 without Timer Bars.
Common Components
MHG22 with Timer Bars- Common Components
| Item| Part Number| Description| Note
---|---|---|---|---
| | 1087396| Complete Cabinet Assembly (MHG22) w/ Timer Bar|
| 1| MER10001682| Tray Insert (FM PN 2601740)|
| 2| 2601677| Left Hand Side Cover Panel|
√| 3| 1087309SP| Heater Assembly, 120V, 700W, Air with Fan|
√| 4| 8076100| Heater Pad, 120V, 330W w/Thermocouple Kit|
| 5| 1087289| Right Hand Side Cover Panel|
| 6| 8076146| Membrane Switch|
√| 7| 8076023| Rocker Switch, 250V, 16A|
| 8| MER340011| Hi Temp Leveling Mount (FM PN 8104733)|
√| 9| 8263405| Board, I/O Merco GM|
√| 10| 2195354
8076336
| Power Supply, 12VDC, 30W (FM PN 8076001)
Power Supply, 12VDC, 65W CE
|
| 11| 8104752| Shelf, 2 Wide|
| 12| 1087272| Bracket, Single I/O Board Mount w/o SUI|
| 12A| 1087269| Bracket, Power Supply|
| 13| 8239275| Diffuser, Air Assembly 2 Wide|
| 14| 8242410| Tray Seal|
| 15| 1708578| Plastic Tray, Double Handle (FM PN 8030491)|
√| 16| 8263411| Timer Bar Assembly, 2/Wide 2/Display, Front (Single Sided Unit
only)|
√| 8263412| Timer Bar Assembly, 2/Wide 2/Display, Front (Double Sided Unit
only)|
√| 16A| 8263413| Timer Bar Assembly, 2/Wide 2/Display, Rear (Double Sided Unit
only)|
| 17| 8242417| Assembly, Timer Bar Mounting Bracket|
| 17A| 8239286| Assembly, Timer Bar Mounting Bracket 2-Wide|
| 18| 1087291| Support, Hold-down Shelf|
| 19| 8239271| Divider, W/A, Plenum Center|
| 20| 8239284| Air W/A, 2X2 Plenum|
√| 21| 8076102| Probe, Air Heater|
| 22| 1087306| Cover, 2-Wide Top|
| | 8076029| Cable, Communication Long 9.50”|
| | 2186998| Cable, Communication Master to Display, 6-pin, 12 inch internal
cable (FM PN 8076009)|
| | 2187007| Cable, 12 inch, USB ext., Panel Mount Female, from IO Board to
USB port (FM PN 8076010)|
| | 8076012| Cable, 6-pin to 4-pin, 26”, Display to Timerbar|
| | 8076080| Harness, AC Power, 2X2|
| | 8076079| Harness, DC Power, 2X2|
| | 2186984| Cord, NEMA 5-20P, 12/3 Domestic (FM PN 8076062)|
| | 2187033| Cordset, Pin/Sleeve, 16A, Export|
√ Recommended Parts
MHG22 without Timer Bars- Common Components
| Item| Part Number| Description| Note
---|---|---|---|---
| | 1087443| Complete Cabinet Assembly (MHG22) w/out Timer Bar|
| 1| MER10001682| Tray Insert (FM PN 2601740)|
| 2| 2601818| Left Hand Side Cover Panel|
√| 3| 1087509SP| Heater Assembly, 120V, 450W, Air with Fan|
√| 4| 8076171| Heater Pad, 120V, 200W w/Thermocouple Kit|
| 5| 1087289| Right Hand Side Cover Panel|
| 6| 8076146| Membrane Switch|
√| 7| 8076023| Rocker Switch, 250V, 16A|
| 8| MER340011| Hi Temp Leveling Mount (FM PN 8104733)|
√| 9| 8263405| Board, I/O Merco GM|
√| 10| 2195354
8076336
| Power Supply, 12VDC, 30W (FM PN 8076001)
Power Supply, 12VDC, 65W CE
|
| 11| 8104752| Shelf, 2 Wide|
| 12| 1087272| Bracket, Single I/O Board Mount w/o SUI|
| 12A| 1087269| Bracket, Power Supply|
| 13| 8239275| Diffuser, Air Assembly 2 Wide|
| 14| 8242410| Tray Seal|
| 15| 1708578| Plastic Tray, Double Handle (FM PN 8030491)|
√| 16| 8076021| Board, Display|
| 17| 8076147| Overlay, Display|
| 18| 1087291| Support, Hold-down Shelf|
| 19| 1087304| Air Assy, 2-Wide Plenum|
| 20| 8076102| Probe, Air Heater|
| 21| 1087306| Cover, 2-Wide Top|
| | 2187007| Cable, 12 inch, USB ext., Panel Mount Female, from IO Board to
USB port (FM PN 8076010)|
| | 8076080| Harness, AC Power, 2X2|
| | 8076079| Harness, DC Power, 2X2|
| | 2186984| Cord, NEMA 5-20P, 12/3 Domestic (FM PN 8076062)|
| | 2187033| Cordset, Pin/Sleeve, 16A, Export|
√ Recommended Parts
MHG23 – Common Components
| Item| Part Number| Description| Note
---|---|---|---|---
| | 1087397| Complete Cabinet Assembly (MHG23) w/ Timer Bar|
| 1| MER10001682| Tray Insert (FM PN 2601740)|
| 2| 1087269| Bracket, Power Supply|
√| 3| 1087310SP| Heater Assembly, 230V, 700W, Air w/Fan (replace with 450W if
voltage is greater than 230V)|
√| 1087290SP| Heater Assembly, 230V, 450W, Air with Fan|
| 4| 1087272| Bracket, Single I/O Board Mount w/o SUI|
| 5| 1087289| Right Hand Side Cover Panel|
| 6| 8076146| Membrane Switch|
√| 7| 8076023| Rocker Switch, 250V, 16A|
| 8| MER340011| Hi Temp Leveling Mount (FM PN 8104733)|
√| 9| 8263405| Board, I/O Merco GM|
√| 10| 2195354
8076336
| Power Supply, 12VDC, 30W (FM PN 8076001)
Power Supply, 12VDC, 65W CE
|
√| 11| 8076099| Heater Pad, 230V, 200W w/Thermocouple|
√| 12| 8076098| Heater Pad, 230V, 100W w/Thermocouple Single|
| 13| 8239283| Diffuser, Air Assembly 1 Wide|
| 14| 8239275| Diffuser, Air Assembly 2 Wide|
| 15| 8242410| Tray Seal|
| 16| 8242417| Assembly, Timer Bar Mounting Bracket|
| 17| 1708578| Plastic Tray, Double Handle (FM PN 8030491)|
√| 18| 8263410| Timerbar, 3/Wide 3/Display (Front and Rear)|
| 19| 1087291| Support, Hold-down Shelf|
| 20| 8239271| Divider, W/A, Plenum Center|
| 21| 8239282| Air W/A, 2X3 Plenum|
√| 22| 8076102| Probe, Air Heater|
| 23| 2601677| Left Hand Side Cover Panel|
| 24| 8104729| Shelf, 3 Wide|
| 25| 1087300| Cover, 3-Wide Top|
| | 8076029| Cable, Communication Long 9.50”|
| | 2186997| Comm Cable 8 pin, 52” internal from Primary IO BD to Secondary IO
BD (FM#8076017)|
| | 2186998| Cable, Communication Master to Display, 6-pin, 12 inch internal
cable (FM PN 8076009)|
| | 2187007| Cable, 12 inch, USB ext., Panel Mount Female, from IO Board to
USB port (FM PN 8076010)|
| | 8076012| Cable, 6-pin to 4-pin, 26”, Display to Timerbar|
| | 8076013| Harness, AC Power, 2X4,2X3|
| | 8076015| Harness, DC Power, 2X4, 2X3|
| | 2186993| Cord, NEMA 6-20P, 12/3 Domestic (FM PN 8076026)|
| | 2187033| Cordset, Pin/Sleeve, 16A, Export|
√ Recommended Parts
MHG24 – Common Components
| Item| Part Number| Description| Note
---|---|---|---|---
| | 1087398| Complete Cabinet Assembly (MHG24) w/ Timer Bar|
| 1| MER10001682| Tray Insert (FM PN 2601740)|
| 2| 1087269| Bracket, Power Supply|
√| 3| 1087310SP| Heater Assembly, 230V, 700W, Air w/Fan (replace with 450W if
voltage is greater than 230V)|
√| 1087290SP| Heater Assembly, 230V, 450W, Air with Fan|
| 4| 1087272| Bracket, Single I/O Board Mount w/o SUI|
| 5| 1087289| Right Hand Side Cover Panel|
| 6| 8076146| Membrane Switch|
√| 7| 8076023| Rocker Switch, 250V, 16A|
| 8| MER340011| Hi Temp Leveling Mount (FM PN 8104733)|
√| 9| 8263405| Board, I/O Merco GM|
√| 10| 2195354
8076336
| Power Supply, 12VDC, 30W (FM PN 8076001)
Power Supply, 12VDC, 65W CE
|
√| 11| 8076099| Heater Pad, 230V, 200W w/Thermocouple|
| 12| 8104726| Shelf, 4 Wide|
| 13| 8239275| Diffuser, Air Assembly 2 Wide|
| 14| 8242410| Tray Seal|
| 15| 1708578| Plastic Tray, Double Handle (FM PN 8030491)|
√| 16| 8263407| Timerbar, 4/Wide 4/Display Front (Single Sided Unit only)|
√| 8263408| Timerbar, 4/Wide 4/Display Front /Rear (Double Sided Unit only)|
| 17| 8242417| Assembly, Timer Bar Mounting Bracket|
| 18| 1087291| Support, Hold-down Shelf|
| 19| 8239271| Divider, W/A, Plenum Center|
| 20| 8239272| Air W/A, 2X4 Plenum|
√| 21| 8076102| Probe, Air Heater|
| 22| 2601677| Left Hand Side Cover Panel|
| 23| 1087293| Cover, 4 Wide Top|
| | 8076029| Cable, Communication Long 9.50”|
| | 2186997| Comm Cable 8 pin, 52” internal from Primary IO BD to Secondary IO
BD (FM#8076017)|
| | 2186998| Cable, Communication Master to Display, 6-pin, 12 inch internal
cable (FM PN 8076009)|
| | 2187007| Cable, 12 inch, USB ext., Panel Mount Female, from IO Board to
USB port (FM PN 8076010)|
| | 8076012| Cable, 6-pin to 4-pin, 26”, Display to Timerbar|
| | 8076013| Harness, AC Power, 2X4,2X3|
| | 8076015| Harness, DC Power, 2X4, 2X3|
| | 2186993| Cord, NEMA 6-20P, 12/3 Domestic (FM PN 8076026)|
| | 2187033| Cordset, Pin/Sleeve, 16A, Export|
√ Recommended Parts
MHG32 – Common Components
| Item| Part Number| Description| Note
---|---|---|---|---
| | 1087444| Complete Cabinet Assembly (MHG32) w/ Timer Bar|
| 1| MER10001682| Tray Insert (FM PN 2601740)|
| 2| 2601814| Left Hand Side Cover Panel 3H|
√| 3| 1087290SP| Heater Assembly, 230V, 450W, Air with Fan|
√| 4| 8076099| Heater Pad, 230V, 200W w/Thermocouple Kit|
| 5| 1087301| Right Hand Side Cover Panel 3H|
| 6| 8076146| Membrane Switch|
√| 7| 8076023| Rocker Switch, 250V, 16A|
| 8| MER340011| Hi Temp Leveling Mount (FM PN 8104733)|
√| 9| 8263405| Board, I/O Merco GM|
√| 10| 2195354
8076336
| Power Supply, 12VDC, 30W (FM PN 8076001)
Power Supply, 12VDC, 65W CE
|
| 11| 8104752| Shelf, 2 Wide|
| 12| 1087433| Bracket, Double I/O Board Mount|
| 12A| 1087269| Bracket, Power Supply|
| 13| 8239275| Diffuser, Air Assembly 2 Wide|
| 14| 8242410| Tray Seal|
| 15| 1708578| Plastic Tray, Double Handle (FM PN 8030491)|
| 16| 8263412| Timer Bar Assembly, 2/Wide 2/Display, Front|
√| 16A| 8263413| Timer Bar Assembly, 2/Wide 2/Display, Rear|
√| 16B| 8263466| Timer Bar Assembly, 2/Wide 1/Display, Front 1087600|
√| 16C| 8263467| Timer Bar Assembly, 2/Wide 1/Display, Rear 1087601|
| 17| 8242417| Assembly, Timer Bar Mounting Bracket|
| 17A| 8239286| Assembly, Timer Bar Mounting Bracket 2-Wide|
| 18| 1087291| Support, Hold-down Shelf|
| 19| 2601735| Cover, 2-Wide Top|
| 20| 8239284| Air W/A, 2X2 Plenum|
√| 21| 8076102| Probe, Air Heater|
| | 8076029| Cable, Communication Long 9.50”|
| | 2186998| Cable, Communication Master to Display, 6-pin, 12-inch internal
cable (FM PN 8076009)|
| | 2187007| Cable, 12 inches, USB ext., Panel Mount Female, from IO Board to
USB port (FM PN 8076010)|
| | 8076012| Cable, 6-pin to 4-pin, 26”, Display to Timerbar|
| | 8076145| Harness, AC Power, 3X2|
| | 8076143| Harness, DC Power, 3X2|
| | 2186993| Cord, NEMA 6-20P, 12/3 Domestic (FM PN 8076026)|
| | 2187033| Cordset, Pin/Sleeve, 16A, Export|
√ Recommended Parts
MHG34 – Common Components
| Item| Part Number| Description| Note
---|---|---|---|---
| | 1087399| Complete Cabinet Assembly (MHG34)w/ Timer Bar|
| 1| MER10001682| Tray Insert (FM PN 2601740)|
| 2| 1087293| Cover, 4 Wide Top|
√| 3| 1087290SP| Heater Assembly, 230V, 450W, Air with Fan|
| 4| 2401547| Bracket, Double I/O Board Mount|
| 5| 1087301| Right Hand Side Cover Panel|
| 6| 8076146| Membrane Switch|
√| 7| 8076023| Rocker Switch, 250V, 16A|
| 8| MER340011| Hi Temp Leveling Mount (FM PN 8104733)|
√| 9| 8263405| Board, I/O Merco GM|
√| 10| 2195354
8076336
| Power Supply, 12VDC, 30W (FM PN 8076001)
Power Supply, 12VDC, 65W CE
|
√| 11| 8076038| Relay, Power Heavy Duty 200-240VAC|
| 12| 1087272| Bracket, Single I/O Board Mount w/o SUI|
| 12A| 1087269| Bracket, Power Supply|
| 13| 8239275| Diffuser, Air Assembly 2 Wide|
| 14| 8242410| Tray Seal|
| 15| 1708578| Plastic Tray, Double Handle (FM PN 8030491)|
√| 16| 8263407| Timerbar, 4/Wide 4/Display Front Lower (Single Sided Unit
only)|
√| 8263408| Timerbar, 4/Wide 4/Display Front /Rear Lower (Double Sided Unit
only)|
√| 16A| 8263409| Timerbar, 4/Wide 2/Display Front /Rear Upper (Single and
Double Sided Unit)|
| 17| 8242417| Assembly, Timer Bar Mounting Bracket|
| 18| 1087291| Support, Hold-down Shelf|
| 19| 8239271| Divider, W/A, Plenum Center|
| 20| 8239272| Air W/A, 2X4 Plenum|
√| 21| 8076102| Probe, Air Heater|
| 22| 2601678| Left Hand Side Cover Panel|
| 23| 8104726| Shelf, 4 Wide|
√| 24| 8076099| Heater Pad, 230V, 200W w/Thermocouple Kit|
√| 25| 8076101| Heater Pad, 230V, 200W w/Thermocouple Kit with Long
Thermocouple for Zone #6|
| | 8076029| Cable, Communication Long 9.50”|
| | 2186997| Comm Cable 8 pin, 52” internal from Primary IO BD to Secondary IO
BD (FM#8076017)|
| | 2186998| Cable, Communication Master to Display, 6-pin, 12 inch internal
cable (FM PN 8076009)|
| | 2187007| Cable, 12 inch, USB ext., Panel Mount Female, from IO Board to
USB port (FM PN 8076010)|
| | 8076012| Cable, 6-pin to 4-pin, 26”, Display to Timerbar|
| | 8076014| Harness, AC Power, 3X4|
| | 8076016| Harness, DC Power, 3X4|
| | 2186993| Cord, NEMA 6-20P, 12/3 Domestic (FM PN 8076026)|
√ Recommended Parts
MHG42 – Common Components
| Item| Part Number| Description| Note
---|---|---|---|---
| | 1087445| Complete Cabinet Assembly (MHG42) W/ Timer Bar|
| 1| MER10001682| Tray Insert (FM PN 2601740)|
| 2| 2601811| Left Hand Side Cover Panel 4H|
√| 3| 1087290SP| Heater Assembly, 230V, 450W, Air with Fan|
√| 4| 8076099| Heater Pad, 230V, 200W w/Thermocouple Kit|
| 5| 1087454| Right Hand Side Cover Panel 4H|
| 6| 8076146| Membrane Switch|
√| 7| 8076023| Rocker Switch, 250V, 16A|
| 8| MER340011| Hi Temp Leveling Mount (FM PN 8104733)|
√| 9| 8263405| Board, I/O Merco GM|
√| 10| 2195354
8076336
| Power Supply, 12VDC, 30W (FM PN 8076001)
Power Supply, 12VDC, 65W CE
|
| 11| 8104752| Shelf, 2 Wide|
| 12| 1087433| Bracket, Double I/O Board Mount|
| 12A| 1087269| Bracket, Power Supply|
| 13| 8239275| Diffuser, Air Assembly 2 Wide|
| 14| 8242410| Tray Seal|
| 15| 1708578| Plastic Tray, Double Handle (FM PN 8030491)|
| 16| 8263412| Timer Bar Assembly, 2/Wide 2/Display, Front|
√| 16A| 8263413| Timer Bar Assembly, 2/Wide 2/Display, Rear|
| 17| 8242417| Assembly, Timer Bar Mounting Bracket|
| 17A| 8239286| Assembly, Timer Bar Mounting Bracket 2-Wide|
| 18| 1087291| Support, Hold-down Shelf|
| 19| 2601735| Cover, 2-Wide Top|
| 20| 8239284| Air W/A, 2X2 Plenum|
√| 21| 8076102| Probe, Air Heater|
| | 8076029| Cable, Communication Long 9.50”|
| | 2186998| Cable, Communication Master to Display, 6-pin, 12 inch internal
cable (FM PN 8076009)|
| | 2187007| Cable, 12 inch, USB ext., Panel Mount Female, from IO Board to
USB port (FM PN 8076010)|
| | 8076012| Cable, 6-pin to 4-pin, 26”, Display to Timerbar|
| | 8076144| Harness, AC Power, 4X2|
| | 8076143| Harness, DC Power, 4X2, 3×2|
| | 2186993| Cord, NEMA 6-20P, 12/3 Domestic (FM PN 8076026)|
| | 2187033| Cordset, Pin/Sleeve, 16A, Export|
√ Recommended Parts
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. Bringing innovation to the table · welbilt.com. ©2023 Welbilt Inc. except where explicitly stated otherwise. All rights reserved. Continuing product improvement may necessitate a change of specifications without notice.
CONTACT
- Part Number: MER_P_8197432 05/2023
- MERCO 8700 LINE AVENUE, SHREVEPORT, LA 71106-6800
- MERCO SALES: 800.221.4583
- MERCO SERVICE: 877.392.7770
- Serving Quality on Demand
- WWW.MERCOPRODUCTS.COM.
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 THAT 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. This manual is updated as new information and models are released. Visit our website for the latest manual.
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