Carrier 17/19EX - Manual (Page 301)

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%
compressor 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
seting of 34 F (1 C).
Impeller Clearance
Displacement switch open Thrust movement excessive
Motor Leak Detector*
Water from motor cooling is leaking Water sensors are installed only on
open-drive motors that use water cool-
ing. (Totally enclosed, water-to-air
cooled [TEWAC] motors)
Table 3 — Protective Safety Limits and Control Settings (Continued)
Monitored Parameter Limit Applicable Comments
Carrier Part No. HK06ZC033
* Applicable to open drive machines only.
Carrier Part No. HK06ZC001
Note: Dimensions in parenthesis are
in millimeters
NO ADJUSTMENTS ARE TO BE MADE ON THIS
SETSCREW! (FACTORY ADJUSTED ONLY)