Table 3 — Protective Safety Limits and Control Settings
MONITORED PARAMETER
LIMIT
APPLICABLE COMMENTS
TEMPERATURE SENSORS
OUT OF RANGE
–40 to 245 F (–40 to 118.3 C)
Must be outside range for 2 seconds
PRESSURE TRANSDUCERS
OUT OF RANGE
0.08 to 0.98 Voltage Ratio
Must be outside range for 2 seconds.
Ratio = Input Voltage ÷ Voltage Reference
COMPRESSOR DISCHARGE
TEMPERATURE
.
220 F (104.4 C)
Preset, alert setting configurable
MOTOR WINDING TEMPERATURE
.
220 F (104.4 C)
Preset, alert setting configurable
BEARING TEMPERATURE
.
220 F (104.4 C)
Preset, alert setting configurable
EVAPORATOR REFRIGERANT
TEMPERATURE
(Temp converted from Pressure
Reading)
,
33 F (for water chilling) (0.6° C)
Preset, configure chilled medium for water
(Service1 table)
,
Brine Refrigerant Trippoint (set point adjustable
from 0 to 40 F [–18 to 4 C] for brine chilling)
Configure chilled medium for brine (Service1
table). Adjust brine refrigerant trippoint for
proper cutout
TRANSDUCER VOLTAGE
,
4.5 vdc
.
5.5 vdc
Preset (Read voltage at terminals 34 and 35
on PSIO module)
CONDENSER PRESSURE — SWITCH
.
218 ± 7 psig (1503 ± 48 kPa),
reset at 120 ± 10 (827 ± 69 kPa)
Preset
— CONTROL 215 psig (1482 kPa)
Preset
OIL PRESSURE — SWITCH
Cutout
,
11 psid (76 kPad) ± 1.5 psid (10.3 kPad)
Cut-in
.
16.5 psid (114 kPad) ± 4 psid (27.5 kPad)
Preset, no calibration needed
— CONTROL
Cutout
,
15 psid (103 kPad)
Alert
,
18 psid (124 kPad)
Preset
LINE VOLTAGE — HIGH
.
110% for one minute
Preset, based on transformed line voltage to
24 vac rated-input to the Starter Management
Module. Also monitored at PSIO power input.
— LOW
,
90% for one minute or
<
85% for 3 seconds
— SINGLE-CYCLE
,
50% for one cycle
COMPRESSOR MOTOR LOAD
(% Compressor Amps)
.
110% for 30 seconds
Preset
,
10% with compressor running
Preset
.
10% with compressor off
Preset
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 temperature 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 configured in
Service01 table with a default setting 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 cooling. (Totally enclosed,
water-to-air cooled [TEWAC] motors)
Flow Switches (Field Supplied)
Operate water pumps with machine off. Manually re-
duce water flow and observe switch for proper cut-
out. Safety shutdown occurs when cutout time ex-
ceeds 3 seconds.
CUT-OFF
SETTING
ADJUSTMENT
SCREW
Carrier Part No. HK06ZC001
NOTE: Dimensions in parentheses are in
millimeters.
Carrier Part No. HK06ZC033
*Applicable to open-drive machines only.
37
Summary of Contents for 17
Page 13: ...Fig 6 Open Drive 17 Series Lubrication Cycle 13 ...
Page 15: ...Fig 7 17EX Controls and Sensor Locations 15 ...
Page 16: ...Fig 7 17EX Controls and Sensor Locations cont 16 ...
Page 17: ...Fig 7 17EX Controls and Sensor Locations cont 17 ...
Page 19: ...Fig 8 19EX Controls and Sensor Locations cont 19 ...
Page 23: ...Fig 16 17 19EX LID Menu Structure 23 ...
Page 24: ...Fig 17 17 19EX Service Menu Structure 24 ...
