Thermo King CRR-40 119, Manual

Page: 148 / 170

Structural/Accessory Maintenance
148
Defrost Drains
Clean the defrost drains every 1,000 operating
hours to be sure the lines remain open.
Fresh Air Exchange System
The fresh air exchange system has an adjustable
vent door for ventilation. The evaporator fans
draw in outside air through an air intake and
discharge an equal amount of container air
through an air outlet.
NOTE: Set the disk or door position to the
ventilation rate indicated on the shipping
manifest.
Disk Adjustment: Low Ventilation
Rates
1. Loosen wing nut on handle assembly.
2. Rotate the disk to set the Indicator at the air
exchange rate shown on the ventilation scale
on the door:
• CRR40 and CRR40SL Models: 0 to 125 m
3 /hr (0 and 75 ft 3 /min.)
3. Tighten the wing nut.
1. Disk Scale: Low Ventilation Rates
2. Disk Assembly with Rate Indicator
3. CO
2
Port
4. Ventilation Door
5. Handle Assembly with Scale: high Ventilation
rates
6. Handle Bracket
7. Wing Nut
Figure 50: Air Exchange System
1
2
4
5
6
7
AJA1456
3