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SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL
B
1. User Manual ............................................................................................ p. 2
2. Legal Regulations ................................................................................... p. 2
3. Safety Instructions ................................................................................. p. 3
4. Controllers Used ..................................................................................... p. 4
5. Controller Programming ........................................................................ p. 5
5a. IR33+ ................................................................................................. p. 5
5b. DISP-1503 ......................................................................................... p. 9
6. Functional Principle ............................................................................... p. 12
7. Technical Data ......................................................................................... p. 13
8. Mounting .................................................................................................. p. 15
9. Mounting Principle ................................................................................. p. 17
10. Cutout Dimensions ................................................................................. p. 18
11. Dimensions (H x W x D) ......................................................................... p. 18
12. Electrical Connection ............................................................................. p. 19
13. Wiring Diagram ....................................................................................... p. 20
13a. IR33+ ............................................................................................... p. 20
13b. DISP-1503 ........................................................................................ p. 22
14. Modbus Connection ............................................................................... p. 24
15. Taking Into Operation ............................................................................. p. 25
16. Troubleshooting ...................................................................................... p. 25
19. Parts Supplied ......................................................................................... p. 27
20. Warranty / Limits of Liability ................................................................. p. 27
Table of Contents SCE-NG1870B230V
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Summary of Contents for SCE NextGen Enviro-Therm SCE-NG1870B230V
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Page 1: Table Of Contents
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL Table of Contents SCE-NG1870B230V 1. User Manual .................... p. 2 2. Legal Regulations ................... p. 2 3. Safety Instructions ................. p. 3 4. Controllers Used ..................p. 4 5. Controller Programming ................ p. 5 5a. -
Page 2: User Manual
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 1. User Manual This instruction manual contains information and instructions to enable the user to work safely, correctly and economically on the unit. Understanding and adhering to the manual can help one: •... -
Page 3: Safety Instructions
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 3. Safety Instructions Upon delivery the unit is already meeting current technical standards therefore it can be safely taken into operation. Only trained specialists are allowed to work on the unit. Unauthorized personnel must be prohibited from working on the unit. Operating personnel must inform their superiors immediately if any malfunction of the unit becomes apparent. -
Page 4: Controllers Used
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 4. Controllers Used There are variations of controllers with this unit. The options are as followed variation A, IR33+ controller, and variation B, DISP-1503 controller. Please find the controller on your unit and proceed to the corresponding section. -
Page 5: Controller Programming
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 5A. IR33+ Controller Programming The cooling unit is intended to be used as a complementary accessory to larger industrial equipment. The unit is used where heat needs to be dissipated from electrical control cabinets or similar enclosures in order to protect heat sensitive components. - Page 6 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL Setting cooling set point, St1: 1. Press and hold “SET” until the display shows St1. Once released the pre-set value of St1 will appear. (default: +35°C / +95°F) 2. Reach the desired value by using ▲ or ▼. 3.
- Page 7 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL Test Function Different test functions can be used depending on the combination of keys pressed. Such tests run for the duration of 4 minutes. • “SET+▲” tests Compressor and Ambient Blower relays. •...
- Page 8 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL Failure table: The display shows either ‘’OFF’’ or “EXX” with an icon flashing (triangle), alternating with the standard display. If more than one error occurs, these are shown in sequence on the display. Failure Description Solution...
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Page 9: 5B. Disp-1503
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 5B. DISP-1503 Controller Programming The cooling unit is intended to be used as a complementary accessory to larger industrial equipment. The unit is used where heat needs to be dissipated from electrical control cabinets or similar enclosures in order to protect heat sensitive components. - Page 10 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL I) Operations from Home Screen • Pressing for 1 second will go to Menu 1. This will show the status of DI1, DI2, S1, S2 and Onboard Sensor. Pressing will toggle between sensors/digital inputs. •...
- Page 11 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL Alarm codes Alarm Code Description AL1 - HI High Temp Alarm AL2 - LO Low Temp Alarm AL3 - PrEP Pressure Pipe Alarm AL4 - AbS Ambient Sensor Faulty AL5 - PPS Pressure Pipe Sensor Faulty AL6 - ICES Ice Sensor Faulty...
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Page 12: Functional Principle
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 6. Functional Principle The cooling unit for enclosures works on the basis of a refrigeration circuit consisting of four main components: compressor, evaporator, condenser and expansion device. The circuit is hermetically sealed and R134a refrigerant circulates inside it (R134a is chlorine free and has an Ozone Destruction Potential [ODP] of 0 and a Global Warming Potential [GWP] of 1430). -
Page 13: Technical Data
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 7. Technical Data Part Number SCE-NG1870B230V Cooling Capacity @ 95°F / 95°F 1880 BTU 410 W @ 50 Hz Cooling Capacity @ 95°F / 131°F 440 W @ 60 Hz Compressor Rotary piston... - Page 14 Testing represents another option; however, if the customer does not implement these options, then the resulting short circuit rating of the panel is based on the lowest short circuit current rating of all power circuit components installed in the panel. nextgen Enviro-Therm ® air conditioners 1870 btu/hr Performance curve SCE-NG1870B120V, SCE-NG1870B230V enclosure air temperature 131°F/55°C 122°F/50°C 95°F/35°C...
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Page 15: Mounting
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 8. Mounting The power supply rating on unit rating plate must comply with mains rating. Always disconnect the power supply before opening the unit. Heat load to be dissipated from enclosure should not exceed specific cooling output of the unit at any condition. When selecting a cooling unit, always allow for a safety margin of at least 15% extra cooling output in the worst conditions. - Page 16 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL Filter installation: If you install / replace a filter please follow the steps below. back to top Rev 1...
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Page 17: Mounting Principle
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 9. Mounting Principle • Do not use within the first 15 minutes after installation! • Use only the supplied mounting hardware. • Tighten Screws to 4.5 Nm. 1 M6 screws • Ensure the mounting surface does not warp after assembly and reinforce it if necessary. -
Page 18: Cutout Dimensions
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 10. Cutout Dimensions 20.47 20.47 18.70 19.06 18.50 16.92 Ø.28 Ø.28 (x6) (x6) 11.93 14.49 14.49 9.53 9.53 1.78 8.46 8.46 11. Dimensions (H x W x D) 20.47 6.01 14.49 back to top Rev 1... -
Page 19: Electrical Connection
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 12. Electrical Connection Caution, risk of death Unconnected and / or faulty protective conductor systems can lead to dangerous voltages and electric shocks which can cause serious accidents. Work on electrical connections may only be carried out by trained electrical engineers. Alarm Contacts Alarm contacts ratings: Maximum switching power 60 W / 125 VA, maximum switching voltage 220 VDC / 250 VAC, maximum switching... -
Page 20: Wiring Diagram
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 13A. IR33+ Wiring Diagram Part List Power Connector Sa: Ambient Temperature Sensor (Optional) Si: Internal Temperature Sensor Hcc: Compressor c/case heater (Optional) Hce: Condensate evaporator heater Hi: Internal heater Cc: Compressor capacitor Alarms/signals connector Normally closed alarm contact Ps: DC Power Supply... - Page 21 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL Door switch Door switch L1 for 120/230 V High temp alarm NC N for 120/230 V High temp alarm com Ground High temp alarm NO Notes High temp alarm can be wired NC or NO When wires: P1 P2 –...
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Page 22: 13B. Disp-1503
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 13B. DISP-1503 Wiring Diagram Part List Power Connector X1: Power connector X2: Signals/alarms connector X3: Master/slave connector Mi: Internal fan Ma: Ambient fan Mc: Compressor Alarms/signals connector Normally closed alarm contact Cc: Compressor capacitor Alarm contact (COM) Si: Internal temperature sensor Sa: Ambient temperature sensor... - Page 23 SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL back to top Rev 1...
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Page 24: Modbus Connection
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 14. Modbus Connection All Enviro-Therm units are offered standard Three pole Modbus connector ® with a Modbus connection SCE-NG2970B / SCE-NG5290B Modbus connector included SCE-NG1195B / SCE-NG2320B SCE-NG5100B SCE-NG6800B SCE-NG8500B / SCE-NG14300B... -
Page 25: Taking Into Operation
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 15. Taking Into Operation Attention! The unit can be damaged by lack of lubricant. To ensure that the compressor is adequately lubricated, the oil, which has been displaced during transport, must first be allowed to flow back into place. The unit must therefore be allowed to stand for at least 30 min. -
Page 26: Maintenance & Cleaning
SAGINAW CONTROL & ENGINEERING • A/C USER MANUAL 17. Maintenance & Cleaning Always switch power supply off before starting any maintenance on the unit. Wait for 5 minutes for electrical components to discharge. The cooling unit is generally maintenance free and can be operated without filters in most environments. If the ambient air is extremely dusty, we recommend installing filter mats (see accessories). -
Page 27: Parts Supplied
20. Warranty / Limits of Liability All goods manufactured by SCE shall be warranted to be free of defects in material or workmanship for a period of two years from the date of shipment. Should the product be proven to SCE to be defective, we shall option to repair or replace the product.
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