Carrier 17 Start Up & Operation Manual

Contents

Start-Up, Operation, and Maintenance InstructionsSAFETY CONSIDERATIONSCentrifugal liquid chillers are designed to provide safe andreliable service when operated within design specifications.When operating this equipment, use good judgment and safetyprecautions to avoid damage to equipment and property orinjury to personnel.Be sure you understand and follow the procedures and safetyprecautions contained in the machine instructions as wellas those listed in this guide.DO NOT VENT refrigerant relief valves within a building. Outlet fromrupture disc or relief valve must be vented outdoors in accordance withthe latest edition of ASHRAE (American Society of Heating, Refrig-eration, and Air Conditioning Engineers) 15. The accumulation of re-frigerant in an enclosed space can displace oxygen and causeasphyxiation.PROVIDE adequate ventilation in accordance with ASHRAE 15, es-pecially for enclosed and low overhead spaces. Inhalation of high con-centrations of vapor is harmful and may cause heart irregularities, un-consciousness, or death. Misuse can be fatal. Vapor is heavier than airand reduces the amount of oxygen available for breathing. Product causeseye and skin irritation. Decomposition products are hazardous.DO NOT USE OXYGEN to purge lines or to pressurize a machine forany purpose. Oxygen gas reacts violently with oil, grease, and othercommon substances.NEVER EXCEED specified test pressures, VERIFY the allowable testpressure by checking the instruction literature and the design pressureson 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 func-tioning before operating any machine.RISK OF INJURY OR DEATH by electrocution. High voltage is presenton motor leads even though the motor is not running when a solid-stateor inside-delta mechanical starter is used. Open the power supply dis-connect before touching motor leads or terminals.DO NOT WELD OR FLAMECUT any refrigerant line or vessel untilall refrigerant (liquid and vapor) has been removed from chiller. Tracesof vapor should be displaced with dry air or nitrogen and the work areashould be well ventilated. Refrigerant in contact with an open flameproduces toxic gases.DO NOT USE eyebolts or eyebolt holes to rig machine sections or theentire assembly.DO NOT work on high-voltage equipment unless you are a qualifiedelectrician.DO NOT WORK ON electrical components, including control panels,switches, starters, or oil heater until you are sure ALL POWER IS OFFand no residual voltage can leak from capacitors or solid-statecomponents.LOCK OPEN AND TAG electrical circuits during servicing. IF WORKIS INTERRUPTED, confirm that all circuits are deenergized beforeresuming work.AVOID SPILLING liquid refrigerant on skin or getting it into the eyes.USE SAFETY GOGGLES. Wash any spills from the skin with soapand water. If any enters the eyes, IMMEDIATELY FLUSH EYES withwater and consult a physician.NEVER APPLY an open flame or live steam to a refrigerant cylinder.Dangerous overpressure can result. When necessary to heat refrigerant,use only warm (110 F [43 C]) water.DO NOT REUSE disposable (nonreturnable) cylinders or attempt torefill them. It is DANGEROUS AND ILLEGAL. When cylinder is emp-tied, evacuate remaining gas pressure, loosen the collar and unscrewand discard the valve stem. DO NOT INCINERATE.CHECK THE REFRIGERANT TYPE before adding refrigerant to themachine. The introduction of the wrong refrigerant can cause damageor malfunction to this machine.Operation of this equipment with refrigerants other than those citedherein should comply with ASHRAE-15 (latest edition). ContactCarrier for further information on use of this machine with otherrefrigerants.DO NOT ATTEMPT TO REMOVE fittings, covers, etc., while ma-chine is under pressure or while machine is running. Be sure pressureis at 0 psig (0 kPa) before breaking any refrigerant connection.CAREFULLY INSPECT all relief devices, rupture discs, and other re-lief devices AT LEAST ONCE A YEAR. If machine operates in a cor-rosive atmosphere, inspect the devices at more frequent intervals.DO NOT ATTEMPT TO REPAIR OR RECONDITION any relief de-vice 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 actas projectiles.DO NOT STEP on refrigerant lines. Broken lines can whip about andcause personal injury.DO NOT climb over a machine. Use platform, catwalk, or staging. Fol-low safe practices when using ladders.USE MECHANICAL EQUIPMENT (crane, hoist, etc.) to lift or moveinspection covers or other heavy components. Even if components arelight, use such equipment when there is a risk of slipping or losing yourbalance.BE AWARE that certain automatic start arrangements CAN ENGAGETHE STARTER. Open the disconnect ahead of the starter in additionto shutting off the machine or pump.USE only repair or replacement parts that meet the code requirementsof the original equipment.DO NOT VENT OR DRAIN waterboxes containing industrial brines,liquid, gases, or semisolids without permission of your process controlgroup.DO NOT LOOSEN waterbox cover bolts until the waterbox has beencompletely drained.DOUBLE-CHECK that coupling nut wrenches, dial indicators, or otheritems have been removed before rotating any shafts.DO NOT LOOSEN a packing gland nut before checking that the nuthas 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 pressurerelief device to prevent a build-up of condensate or rain water.17/19EXCentrifugal Liquid Chillers50/60 HzWith HFC-134aManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 2 2Tab 5a 5dPC 211 Catalog No. 531-750 Printed in U.S.A. Form 17/19EX-2SS Pg 1 1197 3-96 Replaces: 17/19EX-1SS→