Carrier AquaEdge 19DV Series Start-up, Operation And Maintenance Instructions Manual

Also see for AquaEdge 19DV series: Start-up, operation and maintenance instructions Installation, operation and maintenance instructions Installation instructions Controls operation and troubleshooting Operation and Troubleshooting

Carrier AquaEdge 19DV Series Start-up, Operation And Maintenance Instructions Manual Manual pdf 3 page image

3INTRODUCTIONPrior to initial start-up of the 19DV unit, those involved in thestart-up, operation, and maintenance should be thoroughly fa-miliar with these instructions and other necessary job data.Procedures in this manual are arranged in the sequence re-quired for proper chiller start-up and operation. This book alsooutlines the control system for those involved in the start-up,operation and maintenance of the unit before performing start-up procedures. It is intended to be used in combination with the19DV Semi-Hermetic Centrifugal Liquid Chillers ControlsOperation and Troubleshooting manual that describes the con-trols in detail.WARNINGLOCK OPEN AND TAG electrical circuits during servic-ing. IF WORK IS INTERRUPTED, confirm that all cir-cuits are de-energized before resuming work.AVOID SPILLING liquid refrigerant on skin or getting itinto the eyes. USE SAFETY GOGGLES. Wash any spillsfrom the skin with soap and water. If liquid refrigerant en-ters the eyes, IMMEDIATELY FLUSH EYES with waterand consult a physician.NEVER APPLY an open flame or live steam to a refriger-ant cylinder. Dangerous overpressure can result. When it isnecessary to heat refrigerant, use only warm (110°F [43°C])water.VERIFY that refrigerant storage cylinders are clean with noresidual moisture, oil, or refrigerant that can contaminatethe refrigerant charge.DO NOT REUSE disposable (nonreturnable) cylinders orattempt to refill them. It is DANGEROUS AND ILLE-GAL. When cylinder is emptied, evacuate remaining gaspressure, loosen the collar, and unscrew and discard thevalve stem. DO NOT INCINERATE.CHECK THE REFRIGERANT TYPE before adding re-frigerant to the chiller. The introduction of the wrong re-frigerant can cause damage or malfunction to this chiller.Operation of this equipment with refrigerants other thanthose cited herein should comply with ANSI/ASHRAE 15(latest edition). Contact Carrier for further information onuse of this chiller with other refrigerants.DO NOT ATTEMPT TO REMOVE fittings, covers, etc.,while chiller is refrigerant charged or at any time whilechiller is running. Be sure pressure is at 0 psig (0 kPa) be-fore breaking any refrigerant connection. Note that chillerwill be in a vacuum condition when temperature is belownormal room temperature.CAREFULLY INSPECT all rupture discs and other reliefdevices AT LEAST ONCE A YEAR. If chiller operates in acorrosive atmosphere, inspect the devices at more frequentintervals.DO NOT ATTEMPT TO REPAIR OR RECONDITIONany relief device when corrosion or build-up of foreign ma-terial (rust, dirt, scale, etc.) is found within the valve bodyor mechanism. Replace the device.DO NOT install relief devices in series or backwards.USE CARE when working near or in line with a com-pressed spring. Sudden release of the spring can cause itand objects in its path to act as projectiles.CAUTIONFailure to follow these procedures may result in personalinjury or damage to equipment.DO NOT STEP on refrigerant lines. Broken lines can whipabout and release refrigerant, causing personal injury.DO NOT climb over a chiller. Use platform, catwalk, orstaging. Follow safe practices when using ladders.USE MECHANICAL EQUIPMENT (crane, hoist, etc.) tolift or move inspection covers or other heavy components.Even if components are light, use mechanical equipmentwhen there is a risk of slipping or losing your balance.BE AWARE that certain automatic start arrangements CANENGAGE THE STARTER, TOWER FAN, OR PUMPS.Open the disconnect ahead of the starter, tower fans, orpumps.USE only repair or replacement parts that meet the code re-quirements of the original equipment.DO NOT VENT OR DRAIN waterboxes containing indus-trial brines, liquid, gases, or semisolids without the permis-sion of your process control group.DO NOT LOOSEN waterbox cover bolts until the water-box has been completely drained.DO NOT LOOSEN a packing gland nut before checkingthat the nut has a positive thread engagement.PERIODICALLY INSPECT all valves, fittings, and pipingfor corrosion, rust, leaks, or damage.PROVIDE A DRAIN connection in the vent line near eachpressure relief device to prevent a build-up of condensate orrain water.DO NOT leave refrigerant system open to air any longer thanthe actual time required to service the equipment. Seal circuitsbeing serviced and charge with dry nitrogen to prevent con-tamination when timely repairs cannot be completed.CAUTIONDo NOT punch holes or drill into the top surface of the con-trol or VFD enclosure for field wiring. Knockouts are pro-vided for field wiring connections. Drilling holes throughthe top of the cabinet can result in a loss of warranty on thestarter assembly because of metal particulate falling on andinto electronic components.CAUTIONPROVIDE MACHINE PROTECTION. Store machine andstarter indoors, protected from construction dirt and mois-ture. Inspect under shipping tarps, bags, or crates to be surewater has not collected during transit. Keep protective ship-ping covers in place until machine is ready for installation.Follow latest Water-Cooled Chillers Long Term Storagedocument located in Chiller Builder Library.