Safety Shutdown Ð A safety shutdown is identical to a manual shutdown with the exception that the LID displays the reason for the shutdown, the alarm light blinks continu- ously, and the spare alarm contacts are energized. A safety

shutdown requires that the RESET softkey be pressed in

order to clear the alarm. If the alarm continues, the alarm light continues to blink. Once the alarm is cleared, the op-

erator must press the CCN or LOCAL softkeys to restart the chiller.

Do not reset starter loads or any other starter safety for 30 seconds after the compressor has stopped. Voltage output to the compressor start signal is maintained for 10 seconds to determine starter fault.

BEFORE INITIAL START-UP

Job Data Required

·list of applicable design temperatures and pressures (prod- uct data submittal)

·certi®ed drawings of the chiller

·starting equipment details and wiring diagrams

·diagrams and instructions for special controls or options

·installation instructions

·pumpout unit instructions

Equipment Required

·mechanic's tools (refrigeration)

·digital volt-ohmmeter (DVM)

·clamp-on ammeter

·electronic leak detector

·absolute pressure manometer or wet-bulb vacuum indica- tor (Fig. 23)

·500 v insulation tester (megohmmeter) for compressor mo- tors with nameplate voltage of 600 v or less, or a 5000 v insulation tester for compressor motor rated above 600 v

Fig. 23 Ð Typical Wet-Bulb Type

Vacuum Indicator

Using the Economizer/Storage Vessel and Pump- out System Ð Refer to the Pumpout and Refrigerant Trans- fer Procedures section, page 63 for: pumpout system prepa- ration, refrigerant transfer, and chiller evacuation.

Remove Shipping Packaging Ð Remove any pack- aging material from the control center, power panel, guide vane actuator, motor and bearing temperature sensor covers, and the factory-mounted starter.

MOTOR

The motor may be provided with a shipping brace or shipping bolt (normally painted yellow) to prevent shaft movement during transit. It must be removed prior to operation. See Fig. 24.

Fig. 24 Ð Shipping Bolt on Open Drive Motor

The motor should be inspected for any temporary, yellow caution tags with legends that convey information concern- ing actions necessary before the motor can be safely oper- ated. Any slushing compound on the shaft or other parts must be removed using a petroleum type solvent. Observe proper safety precautions.

NOTE: If a shipping bolt was used to restrain the rotor, the Westinghouse logo must be installed over the hole in the end- cover. The logo, the gasket, and hardware can be found with the parts that have been shipped loose. (Usually these are packed inside the main power lead box.)

EXTERNAL GEAR Ð Remove any packaging material that may be on the external gear. Be sure that the breather is in place and free of any obstructions.

Motor Electrical Connection Ð All interconnect- ing wiring for controls and grounding should be in strict com- pliance with both the (NEC) National Electrical Code and any local requirements.

The main lead box furnished with the motor has been sized to provide adequate space for making up connections be- tween the motor lead cables and the incoming power cables. The bolted joints between the motor lead and the power cables must be made and insulated in a workman-like manner fol- lowing the best trade practices.

Fabricated motors are provided with 2 stainless steel ground- ing pads drilled and tapped with the NEMA (National Elec- trical Manufacturers Association) 2-hole pattern (two 1¤2-13 tapped holes on 13¤4 in. centers). Fan cooled cast frames are provided with a special grounding bolt. The motor should be grounded by a proper connection to the electrical system ground.

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Carrier 17EX specifications Before Initial START-UP, Job Data Required, Equipment Required, Motor

17EX specifications

The Carrier 17EX is recognized as an innovative air conditioning solution that combines efficiency with advanced technology. This model is designed to meet the increasing demands of residential and commercial cooling needs while maintaining environmental consciousness.

One of the standout features of the Carrier 17EX is its impressive Seasonal Energy Efficiency Ratio (SEER) rating. With a SEER rating that often exceeds 17, this unit ensures optimized energy consumption, significantly lowering operational costs for users. The incorporation of advanced compressor technology allows the system to adjust its cooling output based on the specific needs of the environment, thus providing both comfort and energy savings.

The Carrier 17EX utilizes a variable-speed inverter-driven compressor that enhances its performance and adaptability. This technology allows the air conditioning unit to operate at different speeds, intelligently adjusting to changing load conditions. As a result, the system runs more efficiently and quietly, providing a more consistent comfort level without the abrupt temperature swings associated with traditional units.

In addition to efficiency, the Carrier 17EX also prioritizes reliability and durability. The unit comes with a robust cabinet that protects the components from weather elements, ensuring longevity and consistent performance. The innovative design integrates a corrosion-resistant finish and robust insulation, which further enhances the unit's resilience in various environmental conditions.

For users concerned about indoor air quality, the Carrier 17EX includes advanced filtration systems designed to capture allergens and airborne particles. This feature is particularly beneficial for individuals with respiratory issues, ensuring that the air circulated within the space is clean and healthy.

Moreover, the Carrier 17EX is equipped with smart technology capabilities, allowing users to control their systems remotely through smartphones or other smart devices. This connectivity not only provides convenience but also empowers homeowners to optimize their energy use by adjusting settings on the fly, ensuring efficient operation even when they are away from home.

Overall, the Carrier 17EX stands out in the marketplace for its exceptional energy efficiency, advanced technology, and commitment to providing reliable and effective cooling solutions. Its combination of modern features makes it a preferred choice for those looking to enhance comfort while being mindful of energy consumption and environmental impact.