MAINTENANCE

Cleaning Procedure — Notify the proper authorities that the smoke detector system is undergoing maintenance, and that the system will temporarily be out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms and possible dispatch of the fire department.

AIR FILTERS

1.Turn off power to the system.

2.Remove and inspect sampling tube filters.

3.If filters are heavily coated with dirt, replace them with new filters. If they are not heavily coated, use a vacuum cleaner or compressed air nozzle to remove dust, then reinstall the filters.

PHOTO DETECTOR BOARD

1.Remove the screen by gently grasping on each side and pulling straight off.

2.Lift the photo chamber in the same fashion. Vacuum the screen and cover. Use clean, compressed air to loosen and blow out any remaining debris.

3.Vacuum photo chamber, then use clean compressed air to blow area clean.

4.Replace the chamber by pressing it onto the base. Press the screen into place. It should fit tightly on the chamber.

Filter Replacement — The filters do not substantially affect smoke detector performance even when up to 90% of the filter is clogged. Quarterly visual inspection usually suffices to determine whether the filters should be replaced. Only a high percentage of contamination affects performance. If further testing is required, compare differential pressure readings with and without the filters installed. If the difference exceeds 10%, then replace the filters. The pressure differential should never fall below 0.0015 in. wg.

Board Replacement

SMOKE DETECTOR BOARD REPLACEMENT

1.Remove the two detector board mounting screws.

2.Pull gently on the board to remove it.

3.To replace the board, align the board mounting features, holes, and the interconnect terminals. Push the board into place.

4.Secure board with the two mounting screws.

POWER BOARD REPLACEMENT

1.Disconnect wiring from the terminal block.

2.Remove the two power board mounting screws.

3.Pull gently on the board to remove it.

4.To replace the board, align the board mounting features, holes, and the interconnect terminals. Push the board into place.

5.Secure board with the two mounting screws.

6.Re-connect wiring to terminal block.

TROUBLESHOOTING

Test and maintain unit smoke detectors as recommended in NFPA 72. Before conducting these tests, notify the proper authorities that the smoke detection system will be temporarily out of service. Disable the system under test to prevent unwant- ed alarms.

Smoke Entry Tests

AIRFLOW TEST — The smoke detector is designed to oper- ate over an extended air speed range of 100 to 4000 fpm. To verify sufficient sampling of unit air, turn on the 48/50HG unit indoor fan using the Service Test function (see Controls and Troubleshooting Guide for details on Service Test) and use a manometer to measure the differential pressure between the two sampling tubes.

The differential pressure should measure at least 0.0015 in. wg and no more than 1.2 in. wg. Because most com- mercially available manometers cannot accurately measure very low pressure differentials, applications with less than 500 fpm of unit air speed may require the use of a current- sourcing pressure transmitter or the use of aerosol smoke (see Smoke Response Test below).

SMOKE RESPONSE TEST — Drill a 1/4-in. hole 3-ft upstream from the unit smoke detector. Use the Service Test function (see Controls and Troubleshooting Guide for details on Service Test) to turn on the 48/50HG unit indoor fan. Measure the air velocity with an anemometer. Air speed must be at least 100 fpm. If the air speed is greater than 500 fpm, use a conventional manometer to measure differential pressure be- tween the sampling tubes.

Spray aerosol smoke into the unit through the 1/4-in. hole for 5 seconds. Wait two minutes for the unit smoke detector to alarm. If the unit smoke detector alarms, then air is flowing through the detector. Remove the unit smoke detector cover and blow out the residual aerosol smoke from the chamber and reset the unit smoke detector. Use duct tape to seal the aerosol smoke entry hole.

To determine if smoke is capable of entering the sensing chamber, visually identify any obstructions. Plug the exhaust and inlet tube holes to prevent unit air from carrying smoke away from the detector head, then blow smoke directly at the head to cause an alarm.

Remove the plugs after this test, or the smoke detector will not function properly and damage may result.

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Carrier CRSMKDET001C00, CRSMKSUP001A00 Maintenance, Board Replacement, Troubleshooting, Smoke Entry Tests
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CRSMKDET001C00, CRSMKSUP001A00 specifications

Carrier has a long-standing reputation for producing high-quality HVAC systems, and the CRSMKSUP001A00 and CRSMKDET001C00 models exemplify this commitment to excellence. These units are designed to meet the evolving demands of today’s commercial and residential environments, offering both efficiency and advanced technology.

The CRSMKSUP001A00, also known as the support unit, is engineered to provide reliable heating and cooling solutions. A key feature of this model is its compact design, which allows it to fit easily into a variety of spaces, making it an ideal choice for installations where space is limited. This unit incorporates advanced refrigerant technology, promoting an optimal operating environment while minimizing energy consumption. Additionally, the unit is equipped with smart diagnostic capabilities, allowing for easy maintenance and troubleshooting.

In terms of efficiency, the CRSMKSUP001A00 boasts high SEER and HSPF ratings, which are crucial for reducing energy costs while maintaining comfort throughout the changing seasons. Its environmentally friendly refrigerants further enhance its appeal to consumers and businesses focused on sustainability.

On the other hand, the CRSMKDET001C00 serves as the detachable unit within this system. This model is built with flexibility in mind, allowing for easy integration with existing HVAC systems. The CRSMKDET001C00 features plug-and-play installation, meaning that it can be set up with minimal downtime, making it a convenient option for busy commercial environments.

This unit is equipped with advanced control technologies, including Wi-Fi connectivity, which enables users to monitor and manage their HVAC systems remotely. Such features are vital for businesses looking to optimize their operational efficiency and reduce energy expenses. Furthermore, the CRSMKDET001C00 employs variable-speed technology, allowing for precise temperature control and enhancing overall comfort by adjusting to the distinct needs of the space.

Both models exemplify Carrier's focus on reliable performance and energy efficiency. With high-quality components and innovative technology, they deliver effective and customizable climate control solutions for a wide range of applications. The CRSMKSUP001A00 and CRSMKDET001C00 are ideal choices for those looking for advanced, efficient, and user-friendly HVAC solutions. Carrier's commitment to technological advancements and sustainable practices positions these models as top contenders in the HVAC market, ensuring climate control that is both effective and environmentally responsible.
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