Sterling A0544325 - Manual

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 foruse with water/glycol. Standard range of operation is 30 ° F (-1°C) to 65 ° F (18°C). A crankcase pressure regulating valve option is av...

Page 8 SMC Series Chillers 1-4 Available Options SMC Series Chillers are available with options that tailor the unit to your requirements. Some arefactory installed, some can be retrofitted in the field. Consult your local Sterlco SalesRepresentative. Some of these options are: Special Pumps Special...

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. ; Notify the transportatio...

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 SELECTI...

SMC Series Chillers Page 13 2 Chiller Installation 2-1 Electrical Connections Check serial tag voltage and amperage requirements and make sure your electrical serviceconforms. See Figure 4 on Page 12 for total running amps. Bring properly sized power leads and ground from a fused disconnect (install...

Page 14 SMC Series Chillers Process Water Bypass All SMC chillers have an internal bypass device (patent pending). If the process flow becomesblocked during chiller operation, this component allows water to flow through the chiller. Thisprotects the chiller from freeze-up, excessive pressures, and p...

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 ...

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 ordamage to the unit may occur . • When operating the SMC unit between 30°F (-1°C) and 4...

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 ifthe system condensing pressure exceeds a safe level. The chiller will automatically restart whenthe pressure drops back to an acceptable level. Model...

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 theinstallation information elsewhere in this manual has been read and followed. New chillersshould be started up and checked by a qualified refriger...

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; nofield adjustment to the internal contr...

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 saf...

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 sealedbearings. Remove grease relief plug (motors only) before adding grease. Failure to do so mayresult in dislodging the bearing grease retainer,...

SMC Series Chillers Page 33 8 Troubleshooting Guide Problem Possible cause Solution No power. Check main disconnectfuses, wiring, and power leadto the unit. Wrong voltage supplied tothe chiller. Voltage must be within plusor minus 10% of thenameplate rating. Defective on/off switch. Replace. Control...

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 andrunning. Sterling/Sterlco replacement parts ensure operation at design specif...