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

Also see for AquaEdge 19XRV series: Start-up and service instructions Installation instructions Start-up, operation and maintenance instructions Start-up and service instructions User manual

Carrier 19XRV Start-up, Operation And Maintenance Instructions Manual Manual pdf 52 page image

ontheSETUPItable.Thecompressorwill restartwhenthechilleris:• in LCW CONTROLandthe LEAVING (7HILLEDWATER temperature is greater than the CONTROLPOINT plus the (RECYCLE CONTROL) RESTARTDELTA T.• in ECW CONTROL and the ENTERING CHILLEDWATER temperature is greater than the CONTROLPOINT plus the (RECYCLE CONTROL) RESTARTDELTA T.Once these conditions am met, the compressor initiates ast_ut-up with a normal start-up sequence.An alert condition may be generated if 5 or more recyclestmt-ups occur in less than 4 hom.s. Excessive recycling canreduce chiller life; therefore, compressor recycling due toextremely low loads should be reduced.To reduce compressor recycling, use the time schedule toshut file chiller down dunng known low load operation period,or incmase the chiller load by running the fan systems. If thehot gas bypass is installed, adjust the values to ensum that hotgas is energized during light load conditions. Increase the(RECYCLE CONTROL) RESTART DELTA T on the SETUPItable to lengthen the time between restmts.The chiller should not be operated below design minimumload without a hot gas bypass installed.Safety Shutdown- A safety shutdown is identic_d toa manual shutdown with the exception that, during a safetyshutdown, the ICVC displays the mason for the shutdown, thealarm light blinks continuously, and the spare alarm contactsam energized.After a safety shutdown, the _ soflkey must be pressedto clem the ahum. If the ahum condition is still present, the _dmlnlight continues to blink. Once file ;tlarm is clemed, file operatormust press the _ or_ softkeys to restart the chillel:BEFORE INITIAL START-UPJob Data Required• list of applicable design temperatums and pressures(product data submittal)• chiller certified prints• starting equipment details and wiring diagrams• diagrams and instructions for special controls or options• pumpout unit instructionsEquipment Required• mechanic's tools (refrigeration) including T30 torx• True RMS digital multimeter with clamp-on currentprobe or True RMS digital clamp-on meter rated for atleast 480 vac or 650 vdc• electronic leak detector• absolute pressure manometer or wet-bulb vacuumindicator (Fig. 28)• 500-v insulation tester (megohmmeter) for compressormotors with nameplate voltage of 600 v or less, or a5000-v insulation tester for compressor motor ratedabove 600 vUsing the Optional Storage Tank and Pump-out System -- Refer to Chillers with Storage Tanks sec-tion, page 71 for pumpout system prepmation, refngeranttransfeL and chiller evacuation.Remove Shipping Packaging -- Remove any pack-aging material from the control centeL power panel, guide vaneactuatoL motor cooling and oil reclaim solenoids, motor andbearing temperatum sensor covers, and the VFD._'SAE PLUG__"SAE FLARENUT I_-THERMC8"(203 mm)SIGHTDISTIWATER ORMETHYLALCOHOLFig. 28 -- Typical Wet-Bulb TypeVacuum IndicatorOpen Oil Circuit Valves -- Check to ensure the oil fil-ter isolation valves (Fig. 4) am open by removing the valve capand checking the valve stem.Oil Charge -- The oil chmge for the 19XRV compmssordepends on the compressor Frame size:• Frame 2 compressor-- 8 gal (30 L)• Frame 3 compressor-- 8 gal (30 L)• Frame 4 compressor-- 10 gal (37.8 L)• Frame 4 compressor with split ring diffuser option --12 gal (,45 L)• Frame 5 compressor-- 18 gal (67.8 L)The chiller is shipped with oil in the compressor When thesump is full, the oil level should be no higher than the middleof the upper sight glass, and minimum level is the bottomof the lower sight glass (Fig. 2). [f oil is added, it must meetC_urier's specification for centrilhgal compressor use asdescribed in the Oil Specification section. Charge the oilthrough the oil charging valve located near the bottom of thetransmission housing (Fig. 2). The oil must be pumped fromthe oil container through file charging valve due to higherrefrigerant pressure. The pumping device must be able to liftfrom 0 to 200 psig (0 to 1380 kPa) or above unit pressure. Oilshould only be charged or removed when the chiller is shutdown.Tighten All Gasketed Joints and Guide VaneShaft Packing -- Gaskets ;rod packing normally relax bythe time the chiller rerives at the jobsite. Tighten all gasketedjoints and the guide vane shaft packing to ensum a leak-tightchillel: Gasketed joints (excluding O-rings) may include jointsat some or all of the following:• Waterbox covers• Compressor suction elbow flanges (at compressor and atthe cooler)• Compressor discharge flange• Compressor discharge line spacer (both sides) if no isola-tion valve• Cooler inlet line spacer (both sides) if no isolation valve• Hot gas bypass valve (both sides of valve)• Hot gas bypass flange at compressorRefer to Table 10 for bolt torque requimments.52