Carrier 19XR Start-up, Operation And Maintenance Instructions Manual

Also see for HERMETIC CENTRIFUGAL LIQUID CHILLERS 19XR: User manual Start-up and service instructions Installation instructions Product data Installation instructions

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Carrier 19XR Start-up, Operation And Maintenance Instructions Manual Manual pdf 1 page image

Start-Up, Operation, and Maintenance InstructionsSAFETY CONSIDERATIONSCentrifugal liquid chillers are designed to provide safeand reliable service when operated within design speci-fications. When operating this equipment, use good judg-ment and safety precautions to avoid damage to equip-ment and property or injury to personnel.Be sure you understand and follow the procedures andsafety precautions contained in the chiller instructionsas well as those listed in this guide.DO NOT VENT refrigerant relief valves within a building. Outletfrom rupture disc or relief valve must be vented outdoors in ac-cordance with the latest edition of ANSI/ASHRAE 15 (AmericanNational Standards Institute/American Society of Heating, Refrig-eration, and Air Conditioning Engineers). The accumulation ofrefrigerant in an enclosed space can displace oxygen and causeasphyxiation.PROVIDE adequate ventilation in accordance with ANSI/ASHRAE15, especially for enclosed and low overhead spaces. Inhalation ofhigh concentrations of vapor is harmful and may cause heart ir-regularities, unconsciousness, or death. Misuse can be fatal. Vaporis heavier than air and reduces the amount of oxygen available forbreathing. Product causes eye and skin irritation. Decompositionproducts are hazardous.DO NOT USE OXYGEN to purge lines or to pressurize a chillerfor any purpose. Oxygen gas reacts violently with oil, grease, andother common substances.NEVER EXCEED specified test pressures, VERIFY the allowabletest pressure by checking the instruction literature and the designpressures on the equipment nameplate.DO NOT USE air for leak testing. Use only refrigerant or drynitrogen.DO NOT VALVE OFF any safety device.BE SURE that all pressure relief devices are properly installed andfunctioning before operating any chiller.RISK OF INJURY OR DEATH by electrocution. High voltage ispresent on motor leads even though the motor is not running whena solid-state or inside-delta mechanical starter is used. Open thepower supply disconnect before touching motor leads or terminals.DO NOT WELD OR FLAMECUT any refrigerant line or vesseluntil all refrigerant (liquid and vapor) has been removed from chiller.Traces of vapor should be displaced with dry air or nitrogen andthe work area should be well ventilated. Refrigerant in contact withan open flame produces toxic gases.DO NOT USE eyebolts or eyebolt holes to rig chiller sections orthe entire assembly.DO NOT work on high-voltage equipment unless you are a quali-fied electrician.DO NOT WORK ON electrical components, including control pan-els, switches, starters, or oil heater until you are sure ALL POWERIS OFF and no residual voltage can leak from capacitors or solid-state components.LOCK OPEN AND TAG electrical circuits during servicing. IF WORKIS INTERRUPTED, confirm that all circuits are deenergized be-fore resuming work.AVOID SPILLING liquid refrigerant on skin or getting it intothe eyes. USE SAFETY GOGGLES. Wash any spills from the skinwith soap and water. If liquid refrigerant enters the eyes, IMME-DIATELY FLUSH EYES with water and consult a physician.NEVER APPLY an open flame or live steam to a refrigerantcylinder. Dangerous over pressure can result. When it is necessaryto heat refrigerant, use only warm (110 F [43 C]) water.DO NOT REUSE disposable (nonreturnable) cylinders or attemptto refill them. It is DANGEROUS AND ILLEGAL. When cylinderis emptied, evacuate remaining gas pressure, loosen the collar andunscrew and discard the valve stem. DO NOT INCINERATE.CHECK THE REFRIGERANT TYPE before adding refrigerant tothe chiller. The introduction of the wrong refrigerant can cause dam-age or malfunction to this chiller.Operation of this equipment with refrigerants other than thosecited herein should comply with ANSI/ASHRAE15 (latest edi-tion). Contact Carrier for further information on use of this chillerwith other refrigerants.DO NOT ATTEMPT TO REMOVE fittings, covers, etc., while chilleris under pressure or while chiller is running. Be sure pressure is at0 psig (0 kPa) before breaking any refrigerant connection.CAREFULLY INSPECT all relief devices, rupture discs, and otherrelief devices AT LEAST ONCE A YEAR. If chiller operates in acorrosive atmosphere, inspect the devices at more frequentintervals.DO NOT ATTEMPT TO REPAIR OR RECONDITION any reliefdevice when corrosion or build-up of foreign material (rust, dirt,scale, etc.) is found within the valve body or mechanism. Replacethe 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 toact as projectiles.DO NOT STEP on refrigerant lines. Broken lines can whip aboutand release refrigerant, causing personal injury.DO NOT climb over a chiller. Use platform, catwalk, or staging.Follow safe practices when using ladders.USE MECHANICAL EQUIPMENT (crane, hoist, etc.) to lift ormove inspection covers or other heavy components. Even if com-ponents are light, use mechanical equipment when there is a risk ofslipping or losing your balance.BE AWARE that certain automatic start arrangements CANENGAGE THE STARTER, TOWER FAN, OR PUMPS. Open thedisconnect ahead of the starter, tower fans, or pumps.USE only repair or replacement parts that meet the code require-ments of the original equipment.DO NOT VENT OR DRAIN waterboxes containing industrial brines,liquid, gases, or semisolids without the permission of your processcontrol group.DO NOT LOOSEN waterbox cover bolts until the waterbox hasbeen completely drained.DOUBLE-CHECK that coupling nut wrenches, dial indicators, orother items have been removed before rotating any shafts.DO NOT LOOSEN a packing gland nut before checking that thenut has a positive thread engagement.PERIODICALLY INSPECT all valves, fittings, and piping for cor-rosion, rust, leaks, or damage.PROVIDE A DRAIN connection in the vent line near each pres-sure relief device to prevent a build-up of condensate or rain water.19XRHermetic Centrifugal Liquid Chillers50/60 HzWith PIC II Controls and HFC-134aManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 2Tab 5aPC 211 Catalog No. 531-974 Printed in U.S.A. Form 19XR-3SS Pg 1 6-98 Replaces: New