Carrier 40RU manual Fan Rotation, Fan Pulley Alignment Align as follows

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Individual Fan Wheel Adjustment - Loosen the 2 locking bolts holding fan wheel hub to shaft. See Fig. 23. Position fan wheel in center of the fan housing and tighten locking bolts. Clearance between wheel and housing should be the same on both sides.

Fan Belts - Motor mounting plate and motor support angles are slotted to permit both vertical and horizontal adjustment. Adjust belt(s) for correct deflection by loosening motor plate mounting bolts, moving motor/plate assembly forward or back, and re-tightening bolts. Press down on belt with one finger midway between fan and motor pulleys to check deflection. The correct deflection is 1/8-in. (3.2 mm). See Fig. 25.

If complete belt replacement is required during servicing, loosen the motor plate mounting bolts (Fig. 25), move motor/plate assembly towards fan pulley, and pull belt(s) off pulleys. Reverse the procedure with new bolts and readjust deflection.

Fan Rotation - Correct fan rotation with respect to fan outlet is shown in Fig. 26.

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Fig. 26 - Fan Rotation

To reverse the direction of rotation of a 3-phase fan motor, reverse any 2 of the power leads. Refer to the connection diagram on the inside of motor terminal box cover for proper reversing procedure of single-phase motor.

Fan Pulley Alignment - Align as follows:

1.Loosen setscrews on pulleys.

2.Align pulleys visually and tighten setscrews on fan pulley to lock it in place.

3.Use the methods shown in Fig. 27 to check proper pulley alignment.

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Fig. 27 - Fan Pulley Adjustments

4.If pulleys are not in correct alignment, loosen the mo- tor holddown bolts and slide the motor axially until the pulleys are aligned.

5.Tighten motor holddown bolts.

Pulley and Drive Adjustment - To obtain desired fan speed, refer to the fan motor and drive data in Tables

8A-11D and adjust fan motor pulley as follows:

1.Remove belt from fan motor pulley after loosening motor from motor base.

2.Loosen setscrew in moveable flange of pulley. Screw moveable flange toward fixed flange to increase the fan speed and away from fixed flange to reduce speed. Before tightening setscrew, make certain that setscrew is over nearest flat surface of pulley hub (Fig. 27).

!CAUTION

UNIT OPERATION HAZARD

Failure to follow this caution could cause equipment damage.

Increasing fan speed produces a greater load on motor. Do not exceed rated capacity of motor.

Condensate Drains - Keep condensate drains free of dirt and foreign matter.

Return-Air Filters - Refer to Replacing Filters section for filter accessibility and removal. Replace with clean filters of the sizes listed in Tables 1A-1F.

40RU

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Contents Installation, Start---Up Service Instructions PRE-INSTALLATION 40RUA Physical Data, English Cooling Units 40RUA Physical Data, SI Cooling Units Unit 40RUQ 40RUQ Physical Data, English Heat Pump UnitsOperating charge kg 40RUA Physical Data, SI Heat Pump UnitsFins/m 591 138Unit 40RUS 40RUS Physical Data, English Chilled Water UnitsChilled Water Coil 40RUS Physical Data, SI Chilled Water Units Operating Weight kg Base UnitFace Area sq m Upper Face Area sq m Lower Rows...Fins/m Max Working Pressure kPag at 125 C40RUA*25 Unit Unit Weight40RUQ*25 40RUS*2540RUA*28 1050 40RUA*30 1062 40RUS*28 1035 40RUS*30 1042 Dimensions Sizes 28U a a 2 5 a 1 a 6 0 a 0 a Preferred Suspension Technique Refrigerant and Chilled Water Piping Access Holes Face-Split Coil Suction and Liquid Line Piping Typical Fitting Requirements Factory-Installed Nozzle and Distributor DataUnit Coil Type TXV Distributor STD Feeder Tubes PER Distributor40RUA*28 Fitting RequirementTypical 40RUS Chilled Water Piping Condensate Drains Fire Hazard Electrical Data, Alternate Motors Electrical Data, Standard Motors40RU Unit Voltage MaximumHolding VA 25, 28Typical Fan Discharge Connections for Multiple Fan Units 40RUA and 40RUQ only Label, TXV AdjustmentManufacturer Lubricant Lubricant DataFan Pulley Alignment Align as follows Fan RotationRemove Filter Retainer Clip Fan Motor Data, Alternate Motor English Fan Motor Data, Standard Motor EnglishFan Motor Data, Alternate Motor SI Fan Motor Data, Standard Motor SIMedium-Static Drive Data, 60 Hz English Standard Drive Data, 60 Hz EnglishMotor Drive FAN DriveStandard Drive Data, 60 Hz SI High-Static Drive Data, 60 Hz EnglishHigh-Static Drive Data, 60 Hz SI Medium-Static Drive Data, 60 Hz SIUnit External Static Pressure kPa 000 542 577 1042 646 716 785 849 907 2830 10.77 11.94 13.08 1087 14.15 15.12 Unit Airflow Pressure Drop FACTORY-SUPPLIED Pressure Drop English40RU Catalog No 40RU---07SI 40RUA, 40RUQ START-UP ChecklistComp A1 Comp B1 Check Voltage Imbalance

40RU specifications

The Carrier 40RU is a highly regarded solution in the realm of commercial cooling systems, specifically designed for applications requiring reliable, long-lasting climate control. This unit stands out due to its engineering excellence, innovative features, and efficient operation.

One of the primary attributes of the Carrier 40RU is its robust construction. Engineered to withstand varying environmental conditions, this unit is built with high-quality materials that promote durability and longevity. The design incorporates corrosion-resistant finishes, which enhances its resilience, especially in outdoor installations.

The Carrier 40RU is equipped with advanced cooling technologies, including variable speed compressors and innovative coil designs. These technologies contribute to its exceptional energy efficiency, allowing the unit to optimize performance while minimizing energy consumption. The variable speed compressors adjust their output based on the current cooling demand, which not only saves energy but also reduces wear and tear on the equipment.

Additionally, the system features a sophisticated control platform that allows for ease of operation and monitoring. This control system offers numerous settings and modes, enabling users to customize their cooling experience based on specific needs. Integration with smart building systems is also possible, providing even greater flexibility and energy management capabilities.

The 40RU model includes a comprehensive filtration system that enhances indoor air quality by effectively capturing dust, allergens, and other particulates. This feature is essential for commercial spaces where maintaining a clean and healthy environment is paramount.

In terms of performance metrics, the Carrier 40RU offers impressive cooling capacities suitable for various applications, from small offices to large commercial buildings. Its noise levels are also minimized through the application of advanced acoustic insulation, ensuring a comfortable environment for occupants.

Moreover, the Carrier 40RU is designed with ease of maintenance in mind. Regular service points are readily accessible, allowing technicians to perform routine checks and repairs efficiently. This design consideration is crucial for minimizing downtime and ensuring the system operates optimally.

In summary, the Carrier 40RU combines rugged construction, energy-efficient technologies, advanced controls, and superior filtration to deliver an outstanding cooling solution for commercial applications. Its versatility, coupled with robust performance characteristics, makes it a preferred choice among HVAC professionals and building managers alike. Whether for new installations or upgrades, the 40RU ensures reliability and comfort in any environment.