Component Operation and Maintenance

6.4.6Air 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 (Lee–Temp/Flood Back Head Pressure Control)

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 9 Outdoor fan/condenser configuration

FAN SPEED CONDENSER

Electric service

 

supplied by others

* B

 

Hot gas line

 

Secure each leg to condenser

 

frame at all points shown using

 

hardware provided.

 

Liquid line

 

LEE-TEMP CONDENSER

 

Lee-Temp heater pad

* B

connection box

 

Hot gas line

 

Electric

 

service

 

supplied by

Liquid line

others

*B - Inverted traps are to be field-supplied and installed (typ). 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).

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Liebert 3000 manual Air Cooled Condenser, Outdoor fan/condenser configuration

3000 specifications

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