PDF Publication Title:
Text from PDF Page: 066
MOTOR COMPRESSOR ASSEMBLY — Guide vane actu- ator, transmission, motor cooling system, oil cooling system, temperature and pressure sensors, oil sight glasses, integral oil pump, isolatable oil filter, extra oil and motor temperature sen- sors, synthetic oil, and compressor serviceability. MOTOR COMPRESSOR LUBRICATION SYSTEM — Oil pump, cooler filter, oil heater, oil charge and specification, operating and shutdown oil level, temperature and pressure, and oil charging connections. CONTROL SYSTEM — CCN and LOCAL start, reset, menu, softkey functions, CVC operation, occupancy schedule, set points, safety controls, and auxiliary and optional controls. AUXILIARY EQUIPMENT — Starters and disconnects, separate electrical sources, pumps, and cooling tower. DESCRIBE CHILLER CYCLES — Refrigerant, motor cooling, lubrication, and oil reclaim. REVIEW MAINTENANCE — Scheduled, routine, and ex- tended shutdowns, importance of a log sheet, importance of water treatment and tube cleaning, and importance of maintain- ing a leak-free chiller. SAFETY DEVICES AND PROCEDURES — Electrical dis- connects, relief device inspection, and handling refrigerant. CHECK OPERATOR KNOWLEDGE — Start, stop, and shutdown procedures, safety and operating controls, refrigerant and oil charging, and job safety. REVIEW THE START-UP OPERATION, AND MAINTE- NANCE MANUAL. OPERATING INSTRUCTIONS Operator Duties 1. Become familiar with the chiller and related equipment before operating the chiller. 2. Prepare the system for start-up, start and stop the chiller, and place the system in a shutdown condition. 3. Maintain a log of operating conditions and document any abnormal readings. 4. Inspect the equipment, make routine adjustments, and perform a Control Test. Maintain the proper oil and re- frigerant levels. the high temperature. Do not restart the chiller until corrected. 3. The oil level should be visible anywhere in one of the two sight glasses. Foaming oil is acceptable as long as the oil pressure and temperature are within limits. 4. The oil pressure should be between 18 and 30 psid (124 to 207 kPad) differential, as seen on the CVC default screen. Typically the reading will be 18 to 25 psid (124 to 172 kPad) at initial start-up. 5. The moisture indicator sight glass on the refrigerant motor cooling line should indicate refrigerant flow and a dry condition. 6. The condenser pressure and temperature varies with the chiller design conditions. Typically the pressure will range between 100 and 210 psig (690 to 1450 kPa) with a corresponding temperature range of 60 to 105 F (15 to 41 C). The condenser entering water temperature should be controlled below the specified design entering water temperature to save on compressor kilowatt requirements. 7. Cooler pressure and temperature also will vary with the design conditions. Typical pressure range will be between 60 and 80 psig (410 and 550 kPa), with temperature rang- ing between 34 and 45 F (1 and 8 C). 8. The compressor may operate at full capacity for a short time after the pulldown ramping has ended, even though the building load is small. The active electrical demand setting can be overridden to limit the compressor IkW, or the pulldown rate can be decreased to avoid a high demand charge for the short period of high demand oper- ation. Pulldown rate can be based on load rate or temper- ature rate. It is accessed on the Equipment SERVICE screen, RAMP_DEM table (Table 2, Example 21). To Stop the Chiller 5. Protect the system from damage during shutdown ods. peri- 6. Maintain the set point, time schedules, and other PIC functions. Prepare the Chiller for Start-Up — Follow the steps described in the Initial Start-Up section, page 64. To Start the Chiller 1. Start the water pumps, if they are not automatic. 2. On the CVC default screen, press the LOCAL or CCN softkey to start the system. If the chiller is in the OCCUPIED mode and the start timers have expired, the start sequence will start. Follow the procedure described in the Start-Up/Shutdown/Recycle Sequence section, page 46. Check the Running System — After the compres- sor starts, the operator should monitor the CVC display and observe the parameters for normal operating conditions: 1. The oil reservoir temperature should be above 120 F (49 C) during shutdown and above 125 F (58 C) during compressor operation. 2. The bearing oil temperature accessed on the COMPRESS table should be 120 to 165 F (49 to 74 C). If the bearing temperature reads more than 180 F (83 C) with the oil pump running, stop the chiller and determine the cause of IMPORTANT: Do not attempt to stop the chiller by opening an isolating knife switch. High intensity arcing may occur. Do not restart the chiller until the problem is diagnosed and corrected. After Limited Shutdown — No special preparations should be necessary. Follow the regular preliminary checks and starting procedures. Preparation for Extended Shutdown — The re- frigerant should be transferred into the pumpout storage tank (if supplied; see Pumpout and Refrigerant Transfer Procedures) to reduce chiller pressure and the possibility of leaks. Maintain a holding charge of 5 to 10 lbs (2.27 to 4.5 kg) of refrigerant or nitrogen to prevent air from leaking into the chiller. If freezing temperatures are likely to occur in the chiller ar- ea, drain the chilled water, condenser water, and the pump-out condenser water circuits to avoid freeze-up. Keep the waterbox drains open. Leave the oil charge in the chiller with the oil heater and controls energized to maintain the minimum oil reservoir temperature. 1. 2. The occupancy schedule starts and stops the chiller auto- matically once the time schedule is configured. By pressing the STOP button for one second, the alarm light blinks once to confirm the button has been pressed. The compressor will then follow the normal shutdown sequence as described in the Shutdown Sequence, Start- Up/Shutdown/Recycle Sequence section, page 46. The chiller will not restart until the CCN or LOCAL soft- key is pressed. The chiller is now in the OFF control mode. 66PDF Image | 19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134a
PDF Search Title:
19XR,XRV Hermetic Centrifugal Liquid Chillers 50/60 Hz With PIC II Controls and HFC-134aOriginal File Name Searched:
19xr_4ss_Startup_PICII.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)