Opening the VFD Access Door

WARNING

Before removing the drive enclosure, open access door and verify that the DC bus voltage has dropped to zero by checking the terminals behind the access door. Failure to observe this precaution could result in severe bodily injury or loss of life.

1.Using recommended screwdriver = 6.4 mm (0.25 in.) flat or T20 star, open access door. See Fig. 2.

2.Check to be sure that the voltage between DC+ and DC- and from each DC terminal to the chassis is zero before proceeding. See Fig. 3.

Drive Assembly Catalog Number — See Fig. 4 for an example Catalog Number.

Components and Physical Data — The Allen- Bradley PF755 Frame 6 drive is used for the 230-amp rated ap- plication (carrier Part No. 19XRV0230...). See Fig. 5.

The Allen-Bradley PF755 Frame 7 drive is used for the

335-amp and 445-amp rated application (Carrier Part No. 19XVR0335... and 19XVR0445... respectively). See Fig. 6.

See Fig. 7 for the dimensions of Frames 6 and 7.

Fig. 2 — Opening Access Door

A19-1831

1 L1 L2 L3

I

LOCKOUT/TAGOUT

O

2

0V

 

DC BUS TEST

DC+ DC–

TERMINALS

 

LOCATED INSIDE

 

ACCESS DOOR

 

0V

MULTIMETER

A19-1842

21P 1 0248

21P PF755 VFD

Voltage Rating

1– 460 to 480 v, 60 Hz

2– 380 to 415 v, 50 Hz

3 – 380 to 400 v, 60 Hz 4– 401 to 439 v, 60 Hz

PF755 Full Load Amp Rating (Maximum Continuous Amps)* 0248 – 248 0361 – 361

0477 – 477

*For Carrier applications, maximum continuous amp ratings are 230, 335, and 445.

Fig. 3 — Check DC Bus Terminals

A19-1814

3 - 3 - 0 - 0 - C

Customer

C– Carrier

Meter Package

0 – No Meter Package

1– Analog Meter Package

Input Reactor

0 – No Input Reactor

1– 3% Input Line Reactor

Disconnect/Breaker Options

3 – 65 KAIC Capacity Breaker

4– 100 KAIC Capacity Breaker

Drive Assembly

3 – Unit Mount NEMA 1 Liquid Cooled

Fig. 4 — Drive Assembly Catalog Number Nomenclature

3

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Carrier 19XRV specifications A19-1831, A19-1842, A19-1814

19XRV specifications

The Carrier 19XRV is a cutting-edge rooftop chiller designed to provide reliable and efficient cooling solutions for a wide range of applications, including commercial buildings and industrial facilities. This advanced system integrates the latest technologies and innovative features to ensure optimal performance, energy efficiency, and ease of use.

One of the most prominent features of the 19XRV is its advanced inverter-driven compressor technology. This allows the chiller to adjust its capacity seamlessly based on the building's cooling demand. By varying the speed of the compressor, the 19XRV maximizes energy efficiency and minimizes operational costs, especially during partial load conditions. This capability not only enhances comfort but also contributes to reduced energy consumption, making it a sustainable choice for environmentally conscious users.

In addition to the inverter technology, the 19XRV incorporates a microchannel coil design. This design optimizes heat exchange efficiency and reduces the refrigerant charge, which is an essential factor in lowering greenhouse gas emissions. The microchannel coils also allow for more compact dimensions, making installation easier and maximizing rooftop space usage.

Another significant aspect of the Carrier 19XRV is its robust controls system. Equipped with Carrier’s advanced ComfortLink™ controls, this chiller offers precise monitoring and control over its operation. Users can easily integrate the chiller into building management systems for real-time data access and efficiency analytics. This connectivity ensures that operators can make informed decisions to optimize performance continuously.

The 19XRV also includes features aimed at enhancing reliability and durability. Its structural design incorporates corrosion-resistant materials, allowing the unit to withstand harsh environmental conditions. This reliability translates to lower maintenance requirements and extended equipment lifespan, providing excellent value over time.

Moreover, the chiller is designed for quiet operation, making it suitable for applications where low noise levels are essential. Sound-dampening measures ensure that the 19XRV can be utilized in urban environments or near sensitive areas without causing disturbances.

In conclusion, the Carrier 19XRV is a state-of-the-art rooftop chiller that combines efficiency, technology, and durability. Its inverter-driven compressor, microchannel coil design, advanced controls, and robust construction make it an ideal choice for those looking to maintain comfort while minimizing energy usage and environmental impact. Whether for commercial or industrial applications, the 19XRV stands out as a reliable and innovative cooling solution for the modern age.