WEEKLY MAINTENANCE

Check the Lubrication System Ð Mark the oil level on the compressor reservoir sight glass, and observe the level each week while the chiller is shut down.

If the level goes below the lower sight glass, the oil re- claim system will need to be checked for proper operation. If additional oil is required, add oil as follows:

Oil may be added through the oil drain and charging valve (Fig. 2, Item 22) using a pump. However, an oil charging elbow on the seal-oil return chamber (Fig. 4) allows oil to be added without pumping. The seal oil return pump automati- cally transfers the oil to the main oil reservoir. A pump is required for adding oil against refrigerant pressure. The oil charge is approximately 20 gallons (76 L) for FX (size 531-

599)style compressors. The added oil must meet Carrier's speci®cations. Refer to Changing the Oil Filters and Oil Changes sections. Any additional oil that is added should be logged by noting the amount and date. Any oil that is added due to oil loss that is not related to service will eventually return to the sump, and must be removed when the level is high.

An oil heater is controlled by the PIC to maintain oil tem- perature above 150 F (65.5 C) or refrigerant temperature plus 70° F (38.9° C) (see the Controls section) when the com- pressor is off. The LID STATUS02 screen displays whether the heater is energized or not (OIL HEATER RELAY). If the PIC shows that the heater is ON, but the sump is not heating up, the power to the oil heater may be off or the oil level may be too low. Check the oil level, the oil heater contactor voltage, and oil heater resistance.

The PIC does not permit compressor start-up if the oil tem- perature is too low. The PIC continues with start-up only after the temperature is within limits.

After the initial start or a 3-hour power failure, the PIC allows the chiller to start once the oil is up to proper tem- perature, but uses a slow ramp load rate of 2° F (1.6° C) per minute.

Be sure that the isolation valves on the oil line near the ®lter(s) (Fig. 44) are fully open before operating the com- pressor.

There are no lubrication requirements for the FX disc coupling.

Check the oil level in the gear reservoir and observe the level each week. If additional oil is required, add oil as de- scribed in the Oil Changes section on page 77. The added oil must meet Carrier speci®cations. (See Table 11.) Do not over- ®ll the reservoir. Any additional oil added or removed should be logged by noting the amount and date.

Check the oil level in the motor bearings and observe the level each week. If additional oil is required, add oil as de- scribed in the Oil Changes section on page 77. The added oil must meet Carrier speci®cations. (See Table 11.) Any addi- tional oil added or removed should be logged by noting the amount and date.

SCHEDULED MAINTENANCE

Establish a regular maintenance schedule based on the ac- tual chiller requirements such as chiller load, run hours, and water quality. The time intervals listed in this section are of- fered as guides to service only.

Service Ontime Ð The LID displays a SERVICE ON- TIME value on the STATUS01 screen. This value should be reset to zero by the service person or the operator each time major service work is completed so that time span be- tween service can be tracked and viewed.

Inspect the Control Center Ð Maintenance is lim- ited to general cleaning and tightening of connections. Vacuum the cabinet to eliminate dust build-up. If the chiller controls malfunction, refer to the Troubleshooting Guide section for control checks and adjustments.

Be sure power to the control center is off when cleaning and tightening connections inside the control center.

Check Safety and Operating Controls Monthly

ÐTo ensure chiller protection, the automated control test should be done at least once per month. See Table 3 for safety control settings.

Changing the Oil Filters

COMPRESSOR OIL FILTER Ð Change this oil ®lter an- nually or whenever the chiller is open for repairs. The 17FX compressor has an isolatable ®lter so that the ®lter may be changed without removing refrigerant from the chiller. Use the following procedure.

1.Make sure the compressor is off and that the compressor disconnect is open.

2.Disconnect the power to the oil heater and oil pump.

3.Close the valves to the ®lter.

4.Relieve the pressure from within the ®lter by using the pressure connection on the oil feed line valve to the com- pressor. Run a hose from the connection to a bucket to catch the oil.

*Water out line is hidden behind oil out line.

Fig. 44 Ð Typical Compressor or Gear Oil Cooler/Filter

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Carrier 17EX specifications Weekly Maintenance, Scheduled Maintenance, Check Safety and Operating Controls Monthly
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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.
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