7-2
Defrost Drains
Structural/Accessory Maintenance
CSR-20 & CSR-40, September 1999
Defrost Drains
Clean the defrost drains every 1,000 operating hours to be sure
the lines remain open.
Evaporator Fan Location
Place fan blade on motor shaft with hub located on the outside
of the blade for proper airflow direction. When mounting the
fan blade and hub assembly on the fanshaft, center the assem-
bly in the orifice. Position the front (top) of the fan blade hub
13 mm (0.5 in.) in from the outer edge of the fan orifice.
Condenser Fan Location
Place fan blade on motor shaft with hub located on the outside
of the blade for proper airflow direction. When mounting the
fan blade and hub assembly on the fanshaft, center the assem-
bly in the orifice. Position the front of the fan blade 10 mm
(0.4 in.) in from the outer edge of the fan orifice.
Fresh Air Exchange System
The fresh air exchange system has an adjustable vent door that
is precalibrated for air exchange rates between 0 and 160 m
3
/hr
(0 and 94 ft
3
/min.) on CSR-20SL units; 0 and 285 m
3
/hr (0 and
168 ft
3
/min.) on CSR-40 & CSR-40SL units. The evaporator
fans draw in outside air through an air intake and discharge an
equal amount of container air through an air outlet.
Condenser Fan Blade Placement
1. Airflow Direction
2. 10 mm (0.4 in.)
3. Condenser Coil
4. Condenser Fan Blade
5. Condenser Motor
Evaporator Fan Blade Placement
1. Evaporator Fan Blade
2. Airflow Direction
3. Evaporator Coil
4. Evaporator Motor
5. 13 mm (0.5 in.)
1
2
Air Exchange System
1. Air Vent Adjustment Disk
2. Adjustment Wing Nut
