13
Service Manual for Subway Front Counters
Refrigeration System
WARNING:
THE POWER MUST BE TURNED OFF
AND DISCONNECTED AT ALL TIMES
DURING MAINTENANCE OR REPAIR
FUNCTIONS.
Location of Refrigeration Assembly
The Refrigeration Assembly is normally accessed
from the operator’s side of the unit. Always replace
the Refrigeration System (Condensing unit) with
the same type of unit that is currently installed.
1. Disconnect the unit from power source.
2. Remove the Lower Functionality Shelf.
3. Remove Louvered Vent Panel.
NOTICE:
Service Bulletin Number 26 can be
found in the SERVICE INFORMATION section
of this manual.
4. Using a Refrigeration-Charging Unit, evacuate
refrigerant from the system according to Duke
Manufacturing Service Bulletin Number 26.
5. Remove expansion valve and evaporator
tubing from refrigeration assembly.
6. Remove Refrigeration Assembly mounting
hardware.
7. Tag and disconnect wiring at Junction Box.
8. Slide out Refrigeration Assembly through
vent.
9. Thoroughly clean the Refrigeration Assembly
Compartment.
NOTICE:
Before installing the replacement
Refrigeration Assembly, pressure check Evaporator
Coils for leaks.
10. Install replacement Refrigeration Assembly
onto Slide Bars.
11. Slide in Refrigeration Assembly to original
position.
12. Install Refrigeration Assembly Mounting
Hardware.
13. Install the Expansion Valve and Evaporator
Tubing from Refrigeration Assembly.
14. Using tags, connect the wiring at the Junction
Box.
15. Connect unit to power source and test unit.
16. Charge system according to Duke Manufacturing
Service Bulletin Number 26.
NOTICE:
Service Bulletin Number 26 can be
found in the SERVICE INFORMATION section
of this manual.
17. Install Louvered Vent Panels.
