Circuit breaker CB2 supplies power to the control center, oil heater, and portions of the
starter controls. Circuit breaker CB3 supplies power to oil pump. Both of these circuit breakers
are wired in parallel with CB1 so that power is supplied to them if the CB1 disconnect is open.
All starters are shipped with a Carrier control module called the Starter Management Module
(SMM). This module controls and monitors all aspects of the starter. See the
Controls
section
for additional SMM information. All starter replacement parts are supplied by the starter
manufacturer.
Unit-Mounted Solid-State Starter (Optional)
The 19XL may be equipped with a solid-state, reduced-voltage starter (
Figure 5
,
Figure 6
,
Figure 7
). This starter provides on-off control of the compressor motor as its primary function.
Using this type of starter reduces the peak starting torque, reduces the motor inrush current,
and decreases mechanical shock. This is summed up by the phrase ‘‘soft starting.’’
Two varieties of solid-state starters are available as a 19XL option (factory supplied and
installed). When a unit-mounted, optional, solid-state starter is purchased with the 19XL, either
a Benshaw, Inc. or Cutler-Hammer® solid-state starter will be shipped with the unit. See
Figure 5
and
Figure 6
. The solid-state starter’s manufacturer name will be located inside the
starter access door. See
Figure 7
.
These starters operate by reducing the starting voltage. The starting torque of a motor at full
voltage is typically 125% to 175% of the running torque. When the voltage and the current are
Summary of Contents for PC211
Page 317: ...Figure 1 19XL Identification ...
Page 318: ...Figure 2A Front View Typical 19XL Components Design I See next page for Rear View ...
Page 319: ...Figure 2A Rear View Typical 19XL Components Design I ...
Page 320: ...Figure 2B Front View Typical 19XL Components Design II See next page for Rear View ...
Page 321: ...Figure 2B Rear View Typical 19XL Components Design II ...
Page 322: ...Figure 3 Refrigerant Motor Cooling and Oil Cooling Cycles ...
Page 323: ...Figure 4 Lubrication System ...
Page 324: ...Figure 5 Cutler Hammer Solid State Starter Internal View ...
Page 325: ...Figure 6 Benshaw Inc Solid State Starter Internal View ...
Page 326: ...Figure 7 Typical Starter Front View Solid State Starter Shown ...
Page 327: ...Figure 8 19XL Controls and Sensor Locations ...
Page 328: ...Figure 9 Control Sensors Temperature ...
Page 329: ...Figure 10 Control Sensors Pressure Transducer Typical ...
Page 330: ...Figure 11 Control Panel Front View with Options Module ...
Page 331: ...Figure 12 Power Panel with Options ...
Page 332: ...Figure 13 LID Default Screen ...
Page 333: ...Figure 14 LID Service Screen ...
Page 334: ...Figure 15 Example of Point Status Screen Status01 ...
Page 335: ...Figure 16 19XL Menu Structure ...
Page 336: ...Figure 17 19XL Service Menu Structure ...
Page 337: ...Figure 18 Example of Time Schedule Operation Screen ...
Page 338: ...Figure 19 Example of Set Point Screen ...
Page 339: ...Figure 20 19XL Hot Gas Bypass Surge Prevention ...
Page 340: ...Figure 21 19XL with Default Metric Settings ...
Page 341: ...Figure 22 Example of Attach to Network Device Screen ...
Page 342: ...Figure 23 Example of Holiday Period Screen ...
Page 344: ...Figure 25 Typical Wet Bulb Type Vacuum Indicator ...
Page 345: ...Figure 26 19XL Leak Test Procedures ...
Page 346: ...Figure 27 Typical Optional Pumpout System Piping Schematic with Storage Tank ...
Page 347: ...Figure 28 Typical Optional Pumpout System Piping Schematic without Storage Tank ...
Page 348: ...Figure 29 Dehydration Cold Trap ...
Page 349: ...Figure 30 Benshaw Inc Solid State Starter Power Stack ...
Page 350: ...Figure 31 Ramp Up and Starting Torque Potentiometers ...
Page 351: ...Figure 32 Typical Potentiometer Adjustment ...
Page 352: ...Figure 33 Typical Cutler Hammer Solid State Starter ...
Page 353: ...Figure 34 Correct Motor Rotation ...
Page 356: ...Figure 37 Optional Pumpout System ...
Page 357: ...Figure 38 Guide Vane Actuator Linkage ...
Page 358: ...Figure 39 19XL Float Valve Designs ...
Page 359: ...Figure 40 Optional Pumpout System Controls ...
Page 360: ...Figure 41 PSIO Module Address Selector Switch Locations and LED Locations ...
Page 361: ...Figure 42 LID Module Rear View and LED Locations ...
Page 362: ...Figure 43 Processor PSIO Module ...
Page 363: ...Figure 44 Starter Management Module SSM ...
Page 364: ...Switch Setting Option Module 1 Option Module 2 S1 S2 6 4 7 2 Figure 45 Options Module ...
Page 365: ...Figure 46 Typical Benshaw Inc Solid State Starter Internal View ...
Page 366: ...Figure 47 Resistance Check ...
Page 367: ...Figure 48 SCR and Power Poles ...
Page 368: ...Figure 49 Typical Cutler Hammer Solid State Starter Internal View ...
Page 369: ...Figure 50 Cutler Hammer Terminal Functions ...
Page 370: ...Figure 51 Solid State Starter General Operation Troubleshooting Guide Typical ...
Page 373: ...Figure 54 Compressor Fits and Clearances Continued ...
Page 374: ...Figure 55 Compressor Fits and Clearances Continued ...