Carrier 16JT Series

To Next Page

To Previous Page

LEGEND

BZ — Alarm Buzzer

GL — Run Light

OL1 — Chilled and Cooling Water Fault Indicator Light

OL2 — Refrigerant and Solution Pump Fault Indicator Light

OL3 — High-Stage Generator Fault Indicator Light

RL — Stop Light

Fig. 14 — Typical Control Sequence, Normal Start

Main Page

Safety Considerations1
Table of Contents2
Introduction3
Machine Description3
Basic Absorption Cycle3
Double-Effect Reconcentration3
Machine Construction3
Flow Circuits6
- Solution Cycle7
- Plotting the Solution Cycle7
Purge System9
Machine Controls10
Start-Stop Systems10
- Semi-Automatic Start-Stop10
- Full Automatic Start-Stop10
Control Wiring10
Control Panel10
Typical Control Sequence, Normal Start14
Typical Control Sequence, Normal Stop16
Typical Control Sequence17
- Abnormal Stop17
Capacity Control18
- Controller18
High Concentration Limit19
Low Concentration Limit19
High-Stage Generator Level Limit19
Before Initial Start-Up19
Job Data and Tools Required19
Inspect Field Piping20
Inspect Field Wiring20
Standing Vacuum Test20
- Long Interval Test20
- Short Interval Test21
Machine Evacuation21
Solution and Refrigerant Charging21
- Handling Lithium Bromide Solution21
- Charging Solution21
- Charging for Conditions Other than Nominal21
- Initial Refrigerant Charging21
Initial Control Checkout22
- And Adjustment22
Preparation22
Energize Control Circuit22
Check Solution and Refrigerant22
- Pump Starters22
Check Pump Starter Overloads22
Check Low-Temperature Cutout22
And Adjustment23
Check Cycle-Guard™ Valve23
Check Solution Thermoswitch23
Check High-Stage Generator Temperature Thermoswitch23
Check High-Stage Generator Pressure Switch23
Check Rotation of Solution and Refrigerant Pumps23
Check Capacity Control Operation23
Completion24
With the Manual Procedure25
- With the Automatic Procedure25
Initial Start-Up25
Preliminary Check25
- Preparation25
Final Adjustment of Capacity Controls25
Final Refrigerant Charge Adjustment25
Check Machine Shutdown27
Check Low-Evaporator Level Operation27
Determine Noncondensable Accumulation Rate27
Operating Instructions27
Operator Duties27
Before Starting Machine27
Start Machine27
Start-Up after Limited Shutdown28
Start-Up after Extended Shutdown28
Start-Up after below Freezing28
- Conditions28
Machine Shutdown - Normal Conditions28
Machine Shutdown - below Freezing28
Actions after Abnormal Shutdown29
Actions after Power Interruption29
Periodic Scheduled Maintenance29
Every Day of Operation29
Every Month of Operation29
Every 2 Months of Operation29
Every 6 Months of Operation29
Every Year of Operation29
Every 3 Years of Operation29
Every 5 Years or 20,000 Hours29
Purge Manual Exhaust Procedure31
Absorber Loss Determination31
Noncondensable Accumulation Rate31
Machine Leak Test33
Machine Evacuation33
Solution or Refrigerant Sampling34
- Solution Sample34
- Refrigerant Sample34
Solution Analysis34
Inhibitor34
Adding Octyl Alcohol35
Removing Lithium Bromide from35
- Refrigerant35
Refrigerant Charge Adjustment35
Capacity Control Adjustment35
Low-Temperature Cutout Adjustment35
Cycle-Guard™ System Operation35
Thermoswitch Adjustment36
Low-Refrigerant Level Operation36
Internal Service36
Service Valve Diaphragm Replacement36
Hermetic Pump Inspection36
- Disassembly36
- Inspection38
- Reassembly38
- Reassembly39
- Completion39
Solution Decrystallization40
Condensing Water Tube Scale40
Water Treatment40
Troubleshooting Guide41

Carrier 16JT Series - Page 15

Table of Contents

Related product manuals