Carrier 16JT Series User Manual

Start-Up, Operation, and
Maintenance Instructions
SAFETY CONSIDERATIONS
Absorption liquid chillers provide safe and reliable serv-
ice when operated within design specifications. When op-
erating this equipment, use good judgment and safety
precautions to avoid damage to equipment and property
or injury to personnel.
Be sure you understand and follow the procedures and
safety precautions contained in the machine instructions
as well as those listed in this guide.
DO NOT USE OXYGEN or air to purge lines, leak test, or
pressurize a machine. Use nitrogen.
NEVER EXCEED specified test pressures. For the 16JT chiller,
the maximum pressure is 12 psig (83 kPa).
WEAR goggles and suitable protective clothing when han-
dling lithium bromide, octyl alcohol, inhibitor, lithium hy-
droxide, and hydrobromic acid. IMMEDIATELY wash any
spills from the skin with soap and water. IMMEDIATELY
FLUSH EYES with water and consult a physician.
DO NOT USE eyebolts or eyebolt holes to rig machine sec-
tions or the entire assembly.
DO NOT work on high-voltage equipment unless you are a
qualified electrician.
DO NOT WORK ON electrical components, including con-
trol panels or switches, until you are sure ALL POWER IS
OFF and no residual voltage can leak from capacitors or solid-
state components.
LOCK OPEN AND TAG electrical circuits during servic-
ing. IF WORK IS INTERRUPTED, confirm that all circuits
are deenergized before resuming work.
NEVER DISCONNECT safety devices or bypass electric in-
terlocks and operate the machine. Also, never operate the
machine when any safety devices are not adjusted and func-
tioning normally.
DO NOT syphon lithium bromide or any other chemical by
mouth.
BE SURE all hydrogen has been exhausted before cutting
into purge chambers. Hydrogen mixed with air can explode
when ignited.
WHEN FLAMECUTTING OR WELDING on an absorp-
tion machine, some noxious fumes may be produced. Ven-
tilate the area thoroughly to avoid breathing concentrated fumes.
DO NOT perform any welding or flamecutting to a machine
while it is under a vacuum or pressurized condition.
NEVER APPLY an open flame or live steam to a refrigerant
cylinder. Dangerous overpressure can result. When neces-
sary to heat a cylinder, use only warm (110 F [43 C]) water.
DO NOT REUSE disposable (nonreturnable) cylinders or at-
tempt to refill them. It is DANGEROUS AND ILLEGAL.
When cylinder is emptied, evacuate remaining gas pressure,
loosen the collar and unscrew and discard the valve stem.
DO NOT INCINERATE.
DO NOTATTEMPT TO REMOVE fittings, covers, etc., while
machine is under pressure or while machine is running.
DO NOT climb over a machine. Use platform, catwalk, or
staging. Follow safe practices when using ladders.
DO NOT STEP ON machine piping. It might break or bend
and cause personal injury.
USE MECHANICAL EQUIPMENT (crane, hoist, etc.) to
lift or move inspection covers or other heavy components.
Even if components are light, use such equipment when there
is a risk of slipping or losing your balance.
VALVE OFF AND TAG steam, water, or brine lines before
opening them.
DO NOT LOOSEN waterbox cover bolts until the water box
has been completely drained.
DO NOT VENT OR DRAIN waterboxes containing indus-
trial brines, liquid, gases, or semisolids without permission
of your process control group.
BE AWARE that certain automatic start arrangements can
engage starters. Open the disconnects ahead of the starters
in addition to shutting off the machine or pump.
USE only repaired or replacement parts that meet the code
requirements of the original equipment.
DO NOTALLOW UNAUTHORIZED PERSONS to tamper
with machine safeties or to make major repairs.
PERIODICALLY INSPECT all valves, fittings, piping, and
relief devices for corrosion, rust, leaks, or damage.
PROVIDE A DRAIN connection in the vent line near each
pressure relief device to prevent a build-up of condensate or
rain water.
IMMEDIATELY wipe or flush the floor if lithium bromide
or octyl alcohol is spilled on it.
16JT
60 Hz
Double-Effect Hermetic Absorption Liquid Chillers
Units 810-880, 080-150, 080L-150L
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2
Tab 5b
PC 211 Catalog No. 531-607 Printed in U.S.A. Form 16JT-2SS Pg 1 4-93 Replaces: 16JT-1SS

Carrier 16JT Series Specifications

General

Brand	Carrier
Model	16JT Series
Category	Chiller
Language	English

Summary

Safety Considerations

Machine Description

Basic Absorption Cycle

Describes the fundamental working principle of the chiller.

Double-Effect Reconcentration

Details the efficiency improvement method used.

Machine Construction

Describes the physical components and vessels of the chiller.

Machine Controls

Start-Stop Systems

Covers different methods for starting and stopping the machine.

Control Panel

Details the components and layout of the main control interface.

Typical Control Sequences

Normal Start Sequence

Step-by-step guide for initiating machine operation.

Normal Stop Sequence

Step-by-step guide for stopping the machine normally.

System Shutdown Procedures

Abnormal Stop Sequence

Explains procedures for shutdowns due to safety device activation.

Capacity Control and Actuators

Capacity Control Overview

Describes the system managing machine output based on load.

Electronic Valve Actuator

Details the electronic component controlling the valve.

Initial Start-Up Preparation

Job Data and Tools Required

Lists necessary specifications, sheets, and tools for setup.

Field Piping and Wiring Inspection

Verifies installation and specifications of piping and wiring.

Solution & Refrigerant Handling

Handling Lithium Bromide Solution

Safety precautions and procedures for the primary solution.

Initial Refrigerant Charging

Steps for adding the correct amount of refrigerant.

Control Checkout & Adjustment

Preparation & Circuit Energization

Steps to prepare and power the control system.

Pump Starter & Overload Checks

Verifies proper operation of pump motor starters.

Low-Temperature Cutout Check

Ensures the safety device functions correctly.

Initial Start-Up Procedures

Preliminary Check

Initial verification steps before system startup.

Final Refrigerant Charge Adjustment

Procedures for setting the correct refrigerant level.

Operating Instructions

Operator Duties

Responsibilities and tasks for the operator.

Pre-Start Checks

Pre-operation checks and conditions.

Machine Start Procedures

General guidance for initiating machine operation.

Machine Shutdown Procedures

Normal Condition Shutdown

Steps for safely stopping the machine normally.

Below Freezing Shutdown

Specific procedures for shutdown in freezing conditions.

Periodic Scheduled Maintenance

Daily & Monthly Maintenance

Routine inspections and data logging.

Quarterly, Annual & Long-Term Tasks

Scheduled maintenance intervals for checks and analysis.

Maintenance Procedures

Purge Manual Exhaust

How to manually vent the purge system.

Absorber Loss Determination

Method for measuring absorber performance.

Machine Leak Test & Evacuation

Steps to find and fix leaks and remove gases.

Solution & Refrigerant Analysis

Sampling Procedures

Methods for drawing fluid samples for analysis.

Solution Analysis & Inhibitor

Interpreting sample results and maintaining inhibitor levels.

Operational Adjustments & Checks

Adding Octyl Alcohol

Procedure for adding octyl alcohol to the solution.

Refrigerant Charge & Thermoswitch Checks

Steps for refrigerant level and temperature switch calibration.

Pump Service & Disassembly

Hermetic Pump Inspection

Detailed checks of pump parts after disassembly.

Disassembly Procedures

Steps for taking apart components, specifically pumps.

Pump Inspection & Reassembly

Inspect Pump Components

Detailed checks of pump parts for wear or damage.

Reassembly Process

Steps for putting pump components back together.

Solution & Water System Maintenance

Solution Decrystallization

Procedures to resolve crystallized solution issues.

Condensing Water Tube Scale

Addresses scale formation in condenser tubes.

Troubleshooting Guide

Machine Start/Shutdown Issues

Identifies causes and remedies for startup failures.

Chilled Water Temperature Problems

Addresses issues with high, low, or fluctuating temps.

Troubleshooting Guide (cont.)

Purging & Crystallization Issues

Diagnoses problems related to purging and solution crystallization.

Pump Noise & Cycle-Guard Issues

Addresses abnormal pump noises and Cycle-Guard operation.