Avantco 178APPT49HC Service Manual
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Avantco 178APPT49HC Service Manual

Avantco 178APPT49HC Service Manual

Refrigerated pizza prep tables, 49"/72"/91" 1/2/3 door refrigerated pizza prep table
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Refrigerated Pizza Prep Tables
#178APPT49HC
49" 1 Door Refrigerated Pizza Prep Table
#178APPT71HC
72" 2 Door Refrigerated Pizza Prep Table
#178APPT91HC
91" 3 Door Refrigerated Pizza Prep Table
NOTICE
This manual is for a certified service technician and should not be used by those who are not properly trained.
This manual cannot cover all possible conditions that may occur and is not intended to be all encompassing.
You should read this manual in its entirety and the specific repair you wish to do prior to starting the repair.
This will allow you to determine if you have the correct tools, instruments, and skills to perform the procedure.
REVISED: 05/2022
Service Manual

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Summary of Contents for Avantco 178APPT49HC

  • Page 1 Service Manual Refrigerated Pizza Prep Tables #178APPT49HC 49" 1 Door Refrigerated Pizza Prep Table #178APPT71HC 72" 2 Door Refrigerated Pizza Prep Table #178APPT91HC 91" 3 Door Refrigerated Pizza Prep Table NOTICE This manual is for a certified service technician and should not be used by those who are not properly trained.

  • Page 2: Table Of Contents

    Turn off and disconnect power before servicing ........12 Evaporator fan blade .................. 12 Evaporator fan motor ................. 12 Evaporator coil ................... 12 Wire Diagram ....................... 14 178APPT49HC .................... 14 178APPT71HC .................... 15 178APPT91HC .................... 16 Parts Diagram List ....................17 178APPT49HC .................... 17 178APPT71HC ....................

  • Page 3: Troubleshooting

    Troubleshooting Problem Possible Solution Ensure that unit is plugged in Ensure the outlet is correct and dedicated and has power Unit will not turn on Check power switch Check controller Ensure door is properly closed Check door gasket for rips, tears, cut, etc. Ensure all pans are installed on top Ensure ambient air is above 85°F Ensure condenser coil is clean...

  • Page 4: Temperature Controller Settings

    Temperature Controller Settings 1. To access settings on temperature Mode Setting Display controller, press and hold the "SET" button Temperature Unit F/C until the display flashes with "PS". (Fig. 2) Cabinet Offset 2. Press the "SET" button again to display a Evap Offset blinking "0".
  • Page 5 Temperature Controller Settings Fig. 4 /C1= Probe 1 differential -50.0° to 50.0°; Default = 0° (Fig. 4) Use up or down arrow to change, then press "Set" button to keep the option. Fig. 5 /C2 = Probe 2 differential (Not used on Refrigerators) (Fig.
  • Page 6 Temperature Controller Settings Fig. 9 c0 = Compressor and fan start delay 0 to 100 minutes Default = 2 minutes (Fig. 9) Use up or down arrow to change, then press "Set" button to keep the option. dl = Time between defrosts Fig.

  • Page 7: Part Testing

    If amperage is at Locked Rotor Amps, compressor needs replaced. Max Load Locked Rotor Amps Model # Amps (LRA) Fig. 14 178APPT49HC 4 Amps 13.2 Amps 178APPT71HC 5 Amps 16.4 Amps 178APPT91HC 7 Amps 28.6 Amps...

  • Page 8: Controller

    Part Testing Controller Fig. 16 Check for 120 volts between white (N) and black (L) (#4) at the back of the controller. NOTE: there are two black (L) wires. (Fig. 16) With controller calling for compressor to run, check for 120 volts between white (N) and red (Compressor) wire.

  • Page 9: Door Seal Heater

    Part Testing Door Seal Heater Fig. 20 Disconnect unit from power and unplug red connector, check for 220 Ω at 70°F +/- 10%. (Fig. 20) Check for 120 volts between white and black wires on the red plug at rear of condenser/ compressor compartment.

  • Page 10: Condensing Tray Components

    Part Replacement Condensing Tray Fig. 25 Components Compressor 1. Remove control panel from front of unit by lifting it up and then towards you to remove from mounting studs. 2. Remove 2 Phillips head screws holding condensing tray inside unit. (Fig. 25) Fig.

  • Page 11: Filter Drier

    Part Replacement Condensing Tray Fig. 32 Fig. 33 Components Cont. Filter Drier 11. With condensing tray pulled out, remove by cutting process tube and liquid line to filter. 12. Remove from clamp by prying apart clamp clip. 13. With all refrigerant removed from system and a safe working condition, sweat out the capillary Fig.

  • Page 12: Evaporator Compartment Parts

    Part Replacement Evaporator Fig. 39 Fig. 40 Compartment Parts Turn off and disconnect power before servicing Evaporator Fan Blade 1. Open door nearest to controller panel, remove shelf if needed, unscrew 4 Phillips head screws holding evaporator panel in place. Fig.
  • Page 13 Part Replacement Evaporator Fig. 47 Fig. 48 Compartment Parts Cont. 10. Lift top off of base (may require 2 people depending on size of prep table) Ensure all bins have been removed from top prior to removing. 11. Remove screws from top of evaporator coil holding cover plate in place.

  • Page 14: Wire Diagram

    Wire Diagram (178APPT49HC) θ...

  • Page 15: 178Appt71Hc

    Wire Diagram (178APPT71HC)

  • Page 16: 178Appt91Hc

    Wire Diagram (178APPT91HC)

  • Page 17: Parts Diagram List

    Parts Diagram List (178APPT49HC)
  • Page 18 Parts Diagram List (178APPT49HC) Item # Description Part # Door Door gasket 178GSKT16809 Door cartridge 178CARTRIDGE Lower right door hinge 178HINGSCLBR Upper right door hinge 178HINGSCLTR Standoff bracket - rear 17818837 Power switch 17810365 Controller - temperature 17815350 Left lid hinge...

  • Page 19: 178Appt71Hc

    Parts Diagram List (178APPT71HC)
  • Page 20 Parts Diagram List (178APPT71HC) Item # Description Part # Door - right Door gasket 178GSKT18130 Door cartridge 178CARTRIDGE Lower right door hinge 178HINGSCLBR Upper right door hinge 178HINGSCLTR Door - left Door gasket 178GSKT17749 Lower left door hinge 178HINGSCLBL Upper left door hinge 178HINGSCLTL Standoff bracket - rear 17818837...

  • Page 21: 178Appt91Hc

    Parts Diagram List (178APPT91HC)
  • Page 22 Parts Diagram List (178APPT91HC) Item # Description Part # Door - middle/right Door gasket 178GSKT17749 Door cartridge 178CARTRIDGE Lower right door hinge 178HINGSCLBR Upper right door hinge 178HINGSCLTR Door - left Door gasket 178GSKT17749 Lower left door hinge 178HINGSCLBL Upper left door hinge 178HINGSCLTL Standoff bracket - rear 17818837...

This manual is also suitable for:

178appt71hc178appt91hc

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