Alco Controls

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Electronic Smart Starter ESC-255 / ESC-325 The electronic Smart Starter ESC-255 / ESC-325 is used for switching, protection and starting current limitation of single phase compressors in refrigeration and air-conditioning applications Features • For motors with up to 25A / 32A max. operating current • Limitation of starting current to less than 45A • Self adjusting to motor current - no manual adjustment or calibration necessary • Many motor protection functions: -Low voltage shut down -Locked rotor recognition and shutdown -Delay function to limit number of motor starts per hour • Self diagnostics • Indicator LED • Thyristor protected contactor for long life • No extra motor contactor needed • Easy Installation ESC-255 Standards: • per Low Voltage Directive (EN 60947-1/EN 60947-5-1) • EN 60947-4-2 Contactors and motor starters - AC semiconductor motor controllers and starters Flicker (EN 61000-3-3 / IEC-1000-3-11) • Safety and environmental requirements for refrigeration systems and heat pumps (EN 378) Selection Chart ESC Type Part No. Max. compressor running current Smart Starter ESC-255 805 175 25A Smart Starter ESC-325 805 176 32A including mounting clip, plug, connectors, operating instructions Technical Data Operating voltage Compressor starting current Operating temperature Storage temperature Start capacitor 230 V 50 Hz nominal limited to max. 45A -20 ... +65°C non condensing -40 ... +85°C non condensing 200 ... 240 uF Weight 400 g Protection acc. IEC 529 IP 20 Max. vibration 4 g (at 10 … 1000 Hz) Time delay after stop 3 min Wiring Diagram Start Current vs Time (a) Motor without current limitation (b) Large motor with ESC Smart Starter (c) Small motor with ESC Smart Starter ESC Contacts: R = Output motor run winding RC = Output run capacitor L1 = 230V / 50Hz power input S = Sensor line to start winding ON = Start input (ON if connected to 230V) N = Neutral line 50 A2.5.1/0706/E
Pressure Transmitter Series PT4 PT4 Pressure Transmitters convert a pressure into a linear electrical output signal. Features • Pressure sensitive piezo-based cell with strong primary output signal for precise and noiseless operation • Sealed gauge absolute pressure reference principle provides the regulation accuracy independent from atmospheric pressure variation • Vibration, shock and pulsation resistant • Protection class IP 65 • Compact dimensions • Output signal 4 to 20 mA • Calibrated for specific temperature and pressure ranges to fulfill application demands in airconditioning and refrigeration systems • Variable supply voltage • CE-mark under EC EMC-Directive • Standard pressure ranges compatible with former PT3 ALCO pressure transmitters Options • Other pressure ranges and calibrations PT4-xxS Standards: • per EMC Directive PT4-Lxx • Underwriter Laboratories UL LISTED SDFY2/SDFY8.E258370 Selection Chart Transmitters Type Part No. Output Pressure Max. working Pressure signal range pressure PS Connection (bar) (bar) PT4-07S 802 320 -0.8 ... 7 25 7/16” -20 UNF PT4-18S 802 322 4 ... 20 mA 0 ... 18 33 (with schrader PT4-30S 802 324 0 ... 30 33 valve opener) PT4-50S 802 326 0 ... 50 50 Cable Assemblies Type Part No. Temperature Cable Leads range length C° (m) PT4-L15 804 593 1.5 PT4-L30 804 594 -50 ... +80 °C 3.0 2 x 0,34 mm 2 PT4-L60 804 595 6.0 PT4-Lxx A2.5.1/0706/E 51
Page 1 and 2: Alco Controls Components for the Re
Page 3 and 4: Electrical Control Valves Electroni
Page 5 and 6: Fan Speed, Temperature and Pressure
Page 7: Electrical Control Valves A2.5.1/07
Page 10 and 11: Correction Factor K t entering Valv
Page 12 and 13: Electrical Control Valves Series EX
Page 14 and 15: Application Expansion Valve and Liq
Page 22 and 23: Application Suction Pressure Regula
Page 24 and 25: Application Condensing Pressure Reg
Page 26 and 27: Application hot gas flow such as he
Page 28 and 29: Application hot gas flow such as he
Page 30 and 31: Electrical Control Valves Series EX
Page 32 and 33: Electronic Valve Drivers and Contro
Page 34 and 35: EC2 Series The compact EC2 series i
Page 36 and 37: Superheat Controllers Series EC3-X3
Page 38 and 39: Display Case and Universal Controll
Page 40 and 41: Block Diagrams EC2-35x / -37x Case
Page 42 and 43: Selection table TCP/IP Description
Page 44 and 45: Condenser- and Condensing Unit Cont
Page 46 and 47: Block Diagrams EC2-74x Condenser Co
Page 48 and 49: Block Diagrams EC3-61x / EC3-62x Ra
Page 50 and 51: Accessories Description Cable Lengt
Page 54 and 55: Technical Data Supply Voltage Nomin
Page 56 and 57: Monitoring Server Series EMS-300 wi
Page 58: Expansion Valves Basic Terms and Te
Page 62 and 63: Accessories Solder Adapter for TIS(
Page 65 and 66: Condensing Capacity kW Valve Type T
Page 67 and 68: R 407C Nominal less MOP with Standa
Page 69 and 70: Available upon special request: •
Page 71 and 72: Liquid Correction Factor K t Temper
Page 73 and 74: Thermo ® -Expansion Valve Series Z
Page 77 and 78: Available upon special request •
Page 79 and 80: Accessories Description Type Part N
Page 83 and 84: Solenoid Valves A2.5.1/0706/E 81
Page 85 and 86: Coils ASC Standards • ALCO ASC Co
Page 87 and 88: 2-Way Solenoid Valves Series 540 No
Page 89 and 90: 2. Liquid Application Liquid Correc
Page 91 and 92: Mechanical Pressure Regulators A2.5
Page 93 and 94: Hot Gas Bypass Regulators Series AC
Page 95 and 96: Head Pressure Control Valves Series
Page 97 and 98: Evaporator and Crankcase Pressure R
Page 99 and 100: Fan Speed Controllers A2.5.1/0706/E
Page 101 and 102: Technical Data Supply voltage 230V
Page 103 and 104:
Selection Dependent on Product Comb
Page 105 and 106:
Pressure Controls and Thermostats A
Page 107 and 108:
Standards and Regulations BGV D4 (V
Page 109 and 110:
Single Pressure Controls Series PS1
Page 111 and 112:
Dual Pressure Controls PS2 TÜV / E
Page 113 and 114:
Pressure Controls Series PS3 / Stan
Page 115 and 116:
Differential Pressure Controls Seri
Page 117 and 118:
Function of contacts SPDT - On temp
Page 119 and 120:
Type Part No. Adjustment Range Lowe
Page 121 and 122:
System Protectors, Moisture Indicat
Page 123 and 124:
Bi-flow Filter Driers Series BFK he
Page 125 and 126:
Nominal Operating Conditions Nomina
Page 127 and 128:
Connections Type Part Connection No
Page 129 and 130:
Filter-Drier Shells With Quick-Cap
Page 131 and 132:
Correction Tables for Filter Driers
Page 133 and 134:
Suction Line Filters and Filter Dri
Page 135 and 136:
Nominal capacity at +4° C evaporat
Page 137 and 138:
Moisture Liquid Indicators Series A
Page 139 and 140:
Oil Management Components A2.5.1/07
Page 141 and 142:
Electronic Oil Level Management Sys
Page 143 and 144:
Oil Separator Series OS Features
Page 145 and 146:
Ball Valves, Miscellaneous A2.5.1/0
Page 147 and 148:
Ball Valves Series BVA / BVS Featur
Page 149 and 150:
Accessories & Spare Parts A2.5.1/07
Page 151 and 152:
Electronic Controllers Description
Page 153 and 154:
Filter Driers Description Type Part
Page 155 and 156:
Appendix A2.5.1/0706/E 153
Page 157 and 158:
Saturation Pressure Table for Refri
Page 159 and 160:
Suction accumulators (continuation)
Page 161:
A2.5.1/0706/E 159
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