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Carrier 19XL User Manual

Page 269

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Flow Switches (Field Supplied)

Operate water pumps with machine off. Manually reduce water flow and observe switch for proper cutout.

Safety shutdown occurs when cutout time exceeds 3 seconds.

Starter Acceleration Time
(Determined by inrush current
going below 100% compres-
sor motor load)

>

45 seconds

For machines with reduced voltage
mechanical and solid-state starters

>

10 seconds

For machines with full voltage starters
(Configured on Service1 table)

Starter Transition

>

75 seconds

Reduced voltage starters only

Condenser Freeze Protection

Energizes condenser pump relay if
condenser refrigerant temperature or
condenser entering water tempera-
ture is below the configured con-
denser freeze point temperature.
Deenergizes when the temperature is
5 F (3 C) above condenser freeze
point temperature.

CONDENSER FREEZE POINT config-
ured in Service01 table with a default
setting of 34 F (1 C).

Table 3 — Protective Safety Limits and Control Settings (Continued)

Monitored Parameter

Limit

Applicable Comments