Component Operation and Maintenance

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 23 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 (typical). When installing traps, pro- vide clearance for swing end of access door. Traps are to extend above base of coil by a minimum of 7-1/2" (190 mm).

7.4.7Water/Glycol Cooled Condensers Coaxial Condenser

Each water- or glycol-cooled module has a coaxial condenser that consists of a steel outside tube and a copper inside tube.

Coaxial condensers do not normally require maintenance or replacement if the water supply is clean. If your system operates at high head pressure with reduced capacity, and all other causes have been eliminated, the coaxial condenser may be obstructed and needs to be replaced.

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Emerson 3000/ITR manual Water/Glycol Cooled Condensers Coaxial Condenser, Outdoor fan/condenser configuration

3000/ITR specifications

The Emerson 3000/ITR is a powerful and versatile instrument designed for industrial automation and process control applications. This modular platform integrates advanced features and technologies tailored to meet the needs of diverse industries including oil and gas, pharmaceuticals, and manufacturing.

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