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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53170002-01 Printed in U.S.A. Form 17DA-3SS Pg 1 3-09 Replaces: 17DA-2SS,

17DA-3SO

Start-Up, Operation, and Maintenance Instructions

SAFETY CONSIDERATIONS

Centrifugal liquid chillers are designed to provide safe and

reliable service when operated within design specifica-

tions. When operating 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 chiller instructions as

well as those listed in this guide.

DO NOT VENT refrigerant relief valves within a building. Outlet

from rupture disc or relief valve must be vented outdoors in accor-

dance with the latest edition of ANSI/ASHRAE 15 (American

National Standards Institute/American Society of Heating, Refrigera-

tion, and Air Conditioning Engineers). The accumulation of refriger-

ant in an enclosed space can displace oxygen and cause asphyxiation.

PROVIDE adequate ventilation in accordance with ANSI/ASHRAE

15, especially for enclosed and low overhead spaces. Inhalation of

high concentrations of vapor is harmful and may cause heart irregular-

ities, unconsciousness, or death. Misuse can be fatal. Vapor is heavier

than air and reduces the amount of oxygen available for breathing.

Product causes eye and skin irritation. Decomposition products are

hazardous.

DO NOT USE OXYGEN to purge lines or to pressurize a chiller for

any purpose. Oxygen gas reacts violently with oil, grease, and other

common substances.

NEVER EXCEED specified test pressures, VERIFY the allowable

test pressure by checking the instruction literature and the design pres-

sures on the equipment nameplate.

DO NOT USE air for leak testing. Use only refrigerant or dry

nitrogen.

DO NOT VALVE OFF any safety device.

BE SURE that all pressure relief devices are properly installed and

functioning before operating any chiller.

RISK OF INJURY OR DEATH by electrocution. High voltage is

present on motor leads even though the motor is not running when a

solid-state or inside-delta mechanical starter is used. Open the power

supply disconnect before touching motor leads or terminal

O NOT WELD OR FLAMECUT any refrigerant line or vessel until

all refrigerant (liquid and vapor) has been removed from chiller.

Traces of vapor should be displaced with dry air or nitrogen and the

work area should be well ventilated. Refrigerant in contact with an

open flame produces toxic gases.

DO NOT USE eyebolts or eyebolt holes to rig chiller sections or the

entire assembly.

DO NOT work on high-voltage equipment unless you are a qualified

electrician.

DO NOT WORK ON electrical components, including control pan-

els, switches, starters, or oil heater 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 servicing. IF

WORK IS INTERRUPTED, confirm that all circuits are deenergized

before resuming work.

AVOID SPILLING liquid refrigerant on skin or getting it into the

eyes. USE SAFETY GOGGLES. Wash any spills from the skin with

soap and water. If liquid refrigerant enters the eyes, IMMEDIATELY

FLUSH EYES with water and consult a physician.

NEVER APPLY an open flame or live steam to a refrigerant cylinder.

Dangerous over pressure can result. When it is necessary to heat

refrigerant, use only warm (110 F [43 C]) water.

DO NOT REUSE disposable (nonreturnable) cylinders or attempt 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.

CHECK THE REFRIGERANT TYPE before adding refrigerant to

the chiller. The introduction of the wrong refrigerant can cause dam-

age or malfunction to this chiller.

Operation of this equipment with refrigerants other than those

cited herein should comply with ANSI/ASHRAE 15 (latest edition).

Contact Carrier for further information on use of this chiller with other

refrigerants.

DO NOT ATTEMPT TO REMOVE fittings, covers, etc., while

chiller is under pressure or while chiller is running. Be sure pressure is

at 0 psig (0 kPa) before breaking any refrigerant connection.

CAREFULLY INSPECT all relief devices, rupture discs, and other

relief devices AT LEAST ONCE A YEAR. If chiller operates in a

corrosive atmosphere, inspect the devices at more frequent intervals.

DO NOT ATTEMPT TO REPAIR OR RECONDITION any relief

device when corrosion or build-up of foreign material (rust, dirt, scale,

etc.) is found within the valve body or mechanism. Replace the

device.

DO NOT install relief devices in series or backwards.

USE CARE when working near or in line with a compressed spring.

Sudden release of the spring can cause it and objects in its path to act

as projectiles.

DO NOT STEP on refrigerant lines. Broken lines can whip about and

release refrigerant, causing personal injury.

DO NOT climb over a chiller. Use platform, catwalk, or staging. Fol-

low safe practices when using ladders.

USE MECHANICAL EQUIPMENT (crane, hoist, etc.) to lift or

move inspection covers or other heavy components. Even if compo-

nents are light, use mechanical equipment when there is a risk of slip-

ping or losing your balance.

BE AWARE that certain automatic start arrangements CAN

ENGAGE THE STARTER, TOWER FAN, OR PUMPS. Open the

disconnect ahead of the starter, tower fans, or pumps.

USE only repair or replacement parts that meet the code requirements

of the original equipment.

DO NOT VENT OR DRAIN waterboxes containing industrial brines,

liquid, gases, or semisolids without the permission of your process

control group.

DO NOT LOOSEN waterbox cover bolts until the waterbox has been

completely drained.

DOUBLE-CHECK that coupling nut wrenches, dial indicators, or

other items have been removed before rotating any shafts.

DO NOT LOOSEN a packing gland nut before checking that the nut

has a positive thread engagement.

PERIODICALLY INSPECT all valves, fittings, and piping for corro-

sion, 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.

DANGER

WARNING

CAUTION

17DA

Open-Drive Centrifugal Liquid Chillers

50/60 Hz

HFC-134a

1 2 3 4 5 6 ... 31 32

Inhaltsverzeichnis

Seite 1 - HFC-134a

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Cata

Seite 2 - CONTENTS

1014. See Table 4 for normal operating ranges. Check thesecharacteristics hourly, recording readings in refrigerationlog. Refrigeration log should inc

Seite 3

112. If the machine will be exposed to freezing temperatures,drain all water from cooler and condenser. Blow out oilcooler lines to remove all traces

Seite 4

124. Start the pumpout compressor (control switch at ONposition).5. Operate pumpout compressor until suction gage readshighest sustained vacuum (about

Seite 5

132. Open valves 1, 2, 5, 6, 7, and 12.3. Close valves 3, 4, 8, 9, 10 ,11, and 13. 4. Operate the pumpout compressor (control switch in theON position

Seite 6

14refrigerant side of the seal and the oil supply being controlledby the differential pressure regulator. The pressure being sup-plied to the seal is

Seite 7

15machine refrigerant pressure, so that any oil leakage throughthe seal is always in an inward direction.CHECK STARTERS AND VFDS — Refer to the sta

Seite 8 - Operator Duties

16BREAKING VACUUM — When breaking vacuum duringleak testing or other service work, always use dry refrigerant orother form of dry gas; i.e., nitrogen

Seite 9 - Fig. 2 — Refrigeration Log

17to the vacuum indicator only when taking a reading.Leave the valve open for 3 minutes to allow the indicatorvacuum to equalize with the chiller vacu

Seite 10

18• Controls - Instruments which control the brine temperature,protect the various elements of the machine, and automati-cally start and stop the comp

Seite 11

19Auxiliary oil pump, if used, operates when seal oil andback-of-seal oil pressure difference is less than 23 psi. Controlis located on machine safety

Seite 12

2CONTENTSPageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seite 13 - Yearly Maintenance

20During shutdown all pressures equalize and refrigerant willnot separate from air in the purge. Do not vent the purge whenthe machine is not running.

Seite 14

21Table 6A — HFC-134a Pressure —Temperature (F)Table 6B — HFC-134a Pressure —Temperature (C)TEMPERATURE,FPRESSURE(psig)0 6.502 7.524 8.606 9.668 10.79

Seite 15 - General Maintenance

22Chilled Water Temperature Too Low withCompressor RunningCHILLED WATER SET POINT IN THE PLC SET TOOLOW — Correct set point and check for overrides fr

Seite 16 - EVACUATOR ASSEMBLY

23use the same sensors as the operating functions. Per customerspecifications, these may be supplemented by mechanicalswitches which directly measure

Seite 17 - Machine Nameplate —

24Fig. 10 — Typical 17DA Motor-Driven Machine Control DiagramPLC — Programmable Logic Controllera17-579

Seite 18

25Fig. 11 — Typical 17DA Turbine-Driven Machine Control DiagramPLC — Programmable Logic Controller

Seite 19

26Fig. 12 — Machine ConfigurationFRONT VIEWREAR VIEW

Seite 20 - Compressor Will Not Start

27Fig. 12 — Machine Configuration (cont)COMPRESSOR FRONT VIEWCOMPRESSOR REAR VIEWLEGEND 1—Free Cooling Vapor Valve (optional)2—Sub-Cooler Refrigerant

Seite 21 - Temperature (C)

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Cata

Seite 22

Seite 23

3INTRODUCTIONGeneral — All persons concerned with the start-up and op-eration of the centrifugal refrigeration machine should be fa-miliar with the eq

Seite 24

Seite 25

Seite 26 - REAR VIEW

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Cata

Seite 27 - COMPRESSOR REAR VIEW

4trip is a good example of the type of safety that acts directly. Ifspecified, there may be both sensor inputs and mechanicalswitches monitoring some

Seite 28 - 17DA-3SO

5Table 2 — Pumpout System RatingsCharge Machine with Water — When the machinehas been proved leak tight and dry, it may be filled with water,brine or

Seite 29

64. If realignment is required, follow instructions supplied bycoupling manufacturer. Carrier Standard Service Tech-niques, Form SM-15, Rev A, also de

Seite 30

7The proportional band can be adjusted on the PLC to sta-bilize the level if necessary.3. Start the compressor. Observe the machine's operation f

Seite 31

8Table 3B — Typical 17DA Cooler and Condenser Charges (R-134a) (Kg)4. Location of isolation transformer, incoming switch gear.5. Operation and servici

Seite 32 - PRE-START UP CHECK LIST

9REFRIGERATION LOG CARRIER 17DA CENTRIFUGAL REFRIGERATION MACHINEPlant MACHINE MODEL NO. MACHINE SERIAL NO. REFRIGERANT TYPE REMARKS: Indicate shut

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