TM 10-7360-226-13&P
0018 00
CONTAINERIZED KITCHEN (WITH TRAILER)
UNIT MAINTENANCE PROCEDURES
Electrical Power: See Power Entrance Panel: WP 0026 00
Cook Center Fan Assemblies: Rotate the fan control knob on the kitchen wall to the full
clockwise position. To check the intake fan, remove the filter located on the air conditioning
side of the Mechanical Room. Remove the cover from the fan and check the voltage. It should
measure approximately 220 VAC. As the fan control is rotated counterclockwise position the
voltage will decrease. If voltage is not present, check the circuit breaker and the voltage at the
circuit breaker panel. If 220 VAC is present, the fan assembly needs to be replaced. Refer to
the replacement procedure in the next section for access to the fan.
To check the exhaust fan, remove and retain the four mounting bolts on the exhaust duct and
remove the fan assembly. Follow the procedure above to check fan operation.
Environmental Control Unit (ECU): The ECU is controlled from the wall switch in the food
preparation area. If the ECU is not cooling or warming properly, check that the ECU Mode
Switch in the food preparation area is set to the proper position. At the ECU Control Box
located on the Mechanical Room wall behind the generator, next to the air conditioners, check
the power supply output voltage at P5 (5 VDC) and P6 (12 VDC) as shown in Figure 1. If the
voltage is not correct, replace the power supply. If the voltage is correct, perform the following
diagnostic check to isolate the problem to an individual ECU and verify operation of the ECU
control card.
1 21 2
GREEN LEDS
RED LEDS
P5
P6
LOW COOL
P2
P1
HIGH COOL
UNUSED
UNIT-1 EVAPORATOR BLOWER LOW
UNUSED
HEAT
UNIT-1 NO FREEZE
UNIT-2 NO FREEZE
DAMPER OPEN
P3
P4
UNIT-2 EVAPORATOR BLOWER LOW
UNUSED
Figure 1. ECU Controller Board.
Remove the access panels of both air conditioners. Set the ECU Mode Switch in the operating
area for High Cool. Monitor ECU operation by noting the LEDs as shown in Figure 1 LED
configuration is also shown on the inside cover of the control box. As the air conditioners are
automatically cycled through their operation (See Figure 2 for reference) note the sequence of
events.
Change 2
0018 00-2