Carrier PC211 Tests To Be Performed Devices Tested Discrete Outputs, Pumpdown/Lockout

Models: PC211

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Table 8 — Control Test Menu Functions (Continued)

Tests To Be Performed

Devices Tested

 

 

7. Discrete Outputs

All outputs or individual outputs may be energized:

 

Hot gas bypass relay

 

Oil heater relay

 

Motor cooling relay

 

Tower fan relay

 

Alarm relay

8. Pumpdown/Lockout

When using pumpdown/lockout, observe freeze up precau-

 

tions when removing charge:

 

Instructs operator as to which valves to close and when

 

Starts chilled water and condenser water pumps and con-

 

firms flows

 

Monitors —

 

Evaporator pressure

 

Condenser pressure

 

Evaporator temperature during pumpout procedures

 

Turns pumps off after pumpdown

 

Locks out compressor

9. Terminate Lockout

Starts pumps and monitors flows

 

Instructs operator as to which values to open and when

 

Monitors —

 

Evaporator pressure

 

Condenser pressure

 

Evaporator temperature during charging process

 

Terminates compressor lockout

10. Refrigerant Type

Sets refrigerant type used:

 

HCFC-22 or HFC-134a.

 

NOTE: Be sure to ATTACH TO LOCAL DEVICE after

 

changing refrigerant type. See Figure 16.

 

 

*During any of the tests that are not automated, an out-of-range reading will have an asterisk (*) next to the reading and a message will be displayed.

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Carrier PC211 Tests To Be Performed Devices Tested Discrete Outputs, Pumpdown/Lockout, Terminate Lockout, Refrigerant Type