Instruction/ maintenance manual of the product A0544325 Sterling
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SMC-050 to SMC-150 Series 0.5 to 1.5 hp Portable Chillers Operation and Installation Manual Sterling, Inc./Sterlco P. O. Box 245018 5200 West Clinton Avenue Milwaukee, WI 53224-9518 Tel ( 414 ) 354-0970 Fax ( 414 ) 354-6421 Part No. A0544325 Bulletin No.
Page 2 SMC Series Chillers Sterling/Sterlco is committed to a continuing program of product improvement. Specifications, appearance, and dimensions described in this manual are subject to change without notice. © Copyright Sterling/Sterlco and Sterling, Inc.
SMC Series Chillers Page 3 Safety Considerations SMC Series Chillers are designed to provide safe and reliable operation when installed and operated within design specifications, following national and local safety codes.
Page 4 SMC Series Chillers Table of Contents 1 General Information ................................................. 7 1-1 Introduction 1-2 Necessary Documents 1-3 Models Covered 1-4 Available Options.
SMC Series Chillers Page 5 Table of Contents 4 Startup Checklists .................................................. 23 4-1 Introduction 4-2 SMC Pre-Startup Checklist 4-3 SMC Startup Checklist 5 Microprocessor Control .................................
Page 6 SMC Series Chillers Charts and Figures 1 SMC050A Process Pump Curves 10 2 SMC100A Process Pump Curves 10 3 SMC150A Process Pump Curves 11 4 SMC Series Chiller Specifications 12 5 Ethylene Glyco.
SMC Series Chillers Page 7 1 General Information 1-1 Introduction SMC Series Water Chillers are reliable, accurate, and easy-to-use air cooled chillers designed for use with water/glycol. Standard range of operation is 30 ° F (-1°C) to 65 ° F (18°C).
Page 8 SMC Series Chillers 1-4 Available Options SMC Series Chillers are available with options that tailor the unit to your requirements. Some are factory installed, some can be retrofitted in the field. Consult your local Sterlco Sales Representative.
SMC Series Chillers Page 9 1-6 In the Event of Shipping Damages Important! According to the contract terms and conditions of the Carrier, the responsibility of the Shipper ends at the time and place of shipment. The Carrier then assumes full responsibility of the shipment.
Page 10 SMC Series Chillers 1-9 Returns Important! Do not return any damaged or incorrect items until you receive shipping instructions from STERLCO. Figure 1 SMC050A Process Pump Curves 60 HERTZ PUMP CURVE CURVES REPRESENT PUMP DISCHARGE ADJUSTED FOR INTERNAL BY-PASS SMC050A - PROCESS PUMPS SELECTIONS PER MINUTE LITRES PER MINUTE U.
SMC Series Chillers Page 11 Figure 3 SMC150A Process Pump Curves 60 HERTZ PUMP CURVE CURVES REPRESENT PUMP DISCHARGE ADJUSTED FOR INTERNAL BY-PASS SMC150A - PROCESS PUMPS SELECTIONS PER MINUTE LITRES PER MINUTE U. S. GALLONS 24 12 18 40 35 80 49 37 52 120 69 160 MTRS TOTAL HEAD PSI FEET 10.
Page 12 SMC Series Chillers Figure 4 SMC Series Chiller Specifications POWER A0537868 OFF ON REFRIGERANT Mini Chiller PUMP ON COMPRESSOR ON Portable Chiller HIGH PRESSURE REFRIGERANT LOW PRESSURE PC S.
SMC Series Chillers Page 13 2 Chiller Installation 2-1 Electrical Connections Check serial tag voltage and amperage requirements and make sure your electrical service conforms.
Page 14 SMC Series Chillers Process Water Bypass All SMC chillers have an internal bypass device (patent pending). If the process flow becomes blocked during chiller operation, this component allows water to flow through the chiller.
SMC Series Chillers Page 15 ; A corrosion inhibitor suitable for the materials in the system should be added to the glycol/water solution. ; If straight water use is desired, contact the Sterlco Engineering Department. ; The six gallon (23 liter) reservoir is not designed to withstand water pressure above 5 psi (34 kPa).
Page 16 SMC Series Chillers 2-5 Overhead Process Considerations If your application has chilled water or process piping above the reservoir fill and vent level, install a standpipe to a point 1’ (30 cm) above the highest point in the system. In applications where the process or its piping is 15 feet (4.
SMC Series Chillers Page 17 3 Sequence of Operation Important! • The SMC unit has a leaving water temperature range of 30°F (-1°C) to 65°F (18°C). Do not attempt to run the SMC unit outside this temperature range or damage to the unit may occur .
Page 18 SMC Series Chillers 3-3 High Pressure Cutout The high pressure cutout is an electro-mechanical safety feature that opens the control circuit if the system condensing pressure exceeds a safe level. The chiller will automatically restart when the pressure drops back to an acceptable level.
SMC Series Chillers Page 19 Figure 7 SMC Component Identification.
Page 20 SMC Series Chillers Figure 8 Piping Schematic — 1 Pump with Reservoir Expansion valve Filter Drier Sight glass Filter High pressure control Compressor Legend Refrigeration lines Chilled wate.
SMC Series Chillers Page 21 Figure 9 Piping Schematic — 1 Pump without Reservoir Legend Refrigeration lines Chilled water piping Condenser water piping End of unit piping Temperature compressor-moun.
Page 22 SMC Series Chillers Figure 10 Piping Schematic — No Pump, No Reservoir Flow switch Temperature compressor-mounted access valve, Refrigeration Compressor Optional CPR valve Low control pressu.
SMC Series Chillers Page 23 4 Startup Checklists 4-1 Introduction Follow the check lists below for the startup of your new chiller. These lists assume the installation information elsewhere in this manual has been read and followed. New chillers should be started up and checked by a qualified refrigeration service technician.
Page 24 SMC Series Chillers Figure 11 SMC Water Circuit Pressure Drop Table Model Gallons per minute ∆ P (psig) 2.0 2.5 2.4 4.0 3.6 7.5 SMC050A 4.8 12.
SMC Series Chillers Page 25 5 Microprocessor Control 5-1 Introduction Standard SMC Series chillers use a microprocessor based controller. The controller is a modular, self-contained unit that can slide from its mounting housing. It is factory set and adjusted; no field adjustment to the internal controls is necessary.
Page 26 SMC Series Chillers Figure 12 SMC Control SP AL AL ON C° OMRON E5CS Scroll -- Steps Through Process set point, actual temperature, and alarm value displays Lights when the display shows the p.
SMC Series Chillers Page 27 6 Optional Graphic Panel 6-1 Indicator Lights PUMP ON (green) This indicator is lit when the pump runs. COMPRESSOR ON (green) This indicator is lit when the compressor operates. HIGH REFRIGERANT PRESSURE (red) This indicator lights if the condensing pressure exceeds a safe level.
Page 28 SMC Series Chillers Figure 13 Optional Graphic Panel OFF ON PRESSURE LOW REFRIGERANT POWER ON PUMP COMPRESSOR ON Portable Chiller REFRIGERANT PRESSURE HIGH A0537868 SMC Series ON AL O RO E5CS.
SMC Series Chillers Page 29 7 Routine Maintenance 7-1 Lubrication Every three months, grease all fan motors and pump motors that do not have permanently sealed bearings. Remove grease relief plug (motors only) before adding grease. Failure to do so may result in dislodging the bearing grease retainer, eventually causing bearing failure.
Page 30 SMC Series Chillers Figure 15 Typical SMC Wiring Schematic 1T 1T 1FU 1FU 1 X1 1 1 Jumper Remote interlock by others 1S-1LT 1 3 1C 1 41 6 1 5 2C Pump starter Condensing unit contactor G 1S-1LT .
SMC Series Chillers Page 31 Figure 16 SMC Wiring Schematic for Chillers with No Pump or Reservoir 1T 1T 1FU 1FU X1 1 1 Jumper Remote interlock by others 1S 1S-1LT 5 7 6 1C Condensing unit contactor G .
Page 32 SMC Series Chillers - Notes -.
SMC Series Chillers Page 33 8 Troubleshooting Guide Problem Possible cause Solution No power. Check main disconnect fuses, wiring, and power lead to the unit. Wrong voltage supplied to the chiller. Voltage must be within plus or minus 10% of the nameplate rating.
Page 34 SMC Series Chillers Problem Possible cause Solution Refrigerant is low. Check the refrigerant charge. Pressure switch contacts are open. Sight glass should be clear while compressor runs. Call for service if bubbling or foaming. Refrigerant high pressure cutout switch contacts are open.
SMC Series Chillers Page 35 Figure 17 SMC Spare Parts List Part number Description A0537868 SMC graphic A0537899 BZ pressure gauge A0534584 Red neon graphic light * A0534586 Green neon graphic light *.
Page 36 SMC Series Chillers Service Notes.
SMC Series Chillers Page 37 Service Notes.
Page 38 SMC Series Chillers Parts Department Call toll-free 7am–6pm CST [ 800 ] 783-7835 or call [ 414 ] 354-0970 The Sterling/Sterlco Parts Department at Sterling, Inc. is ready to provide the parts to keep your systems up and running. Sterling/Sterlco replacement parts ensure operat ion at design specifications.
An important point after buying a device Sterling A0544325 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sterling A0544325 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sterling A0544325 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sterling A0544325 you will learn all the available features of the product, as well as information on its operation. The information that you get Sterling A0544325 will certainly help you make a decision on the purchase.
If you already are a holder of Sterling A0544325, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sterling A0544325.
However, one of the most important roles played by the user manual is to help in solving problems with Sterling A0544325. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sterling A0544325 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
