Air-Cooled Condenser; Figure 3 Outdoor Fan/Condenser Configuration - Emerson Liebert Challenger iCOM 3000 Operation & Maintenance Manual

3.4.6

Air-Cooled Condenser

Restricted airflow through the condenser coil will reduce the operating efficiency of the unit and can
result in high compressor head pressure and loss of cooling.
Clean the condenser coil of all debris that will inhibit air flow. This can be done with compressed air
or commercial coil cleaner. Check for bent or damaged coil fins and repair as necessary. In winter, do
not permit snow to accumulate around the sides or underneath the condenser.
Check all refrigerant lines and capillaries for vibration isolation. Support as necessary. Visually
inspect all refrigerant lines for signs of oil leaks.
Checking Refrigerant Charge (Liebert Lee–Temp
The system refrigerant level must be checked periodically. To do so:
1. Adjust temperature setpoint in the unit so that the compressor will run continuously.
2. The refrigerant level is visible through two sight glasses on the receiver and will vary with
ambient temperature.
a. 40°F (4.4°C) and lower — Midway on the bottom sight glass.
b. 40 to 60°F (4.4 to 15.6°C) — Bottom sight glass should be clear with liquid.
c. 60°F (15.6°C) and above — Midway on the top sight glass.
3. Return temperature setpoint to desired number.
Figure 3 Outdoor fan/condenser configuration
FAN SPEED CONDENSER
Secure each leg to condenser
frame at all points shown using
hardware provided.
Lee-Temp heater pad
connection box
*B - Inverted traps are to be field-supplied and installed (typical). When installing traps,
provide clearance for swing end of access door. Traps are to extend above base of coil by a
minimum of 7-1/2" (190 mm).
™
/Flood Back Head Pressure Control)
Liquid line
Liquid line
13
Component Operation and Maintenance
Electric service
supplied by others
* B
Hot gas line
LEE-TEMP CONDENSER
Liebert ® Challenger 3000
* B
Hot gas line
Electric
service
supplied by
others
™