Oil Charge — When additional oil or a complete charge is required it must meet the following specifications:

•Manufacturer. . . . . . . . . . . . . . . . . . . . . Emkarate RL220XL

•Oil Type . . . . . . . . . . . . . . . . . . . Inhibited polyolester-based synthetic compressor lubricant for use with screw compressors.

•ISO Viscosity Grade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

Do not reuse drained oil or any oil that has been exposed to the atmosphere.

Oil is available in the following quantities from your local Carrier representative:

QUANTITY

TOTALINE PART NO.

1 Quart

P903-2325

1 Gallon

P903-2301

5 Gallon

P903-2305

If unsure if there is low oil charge in the system, follow the steps below:

1.If the unit shuts off repeatedly from a low oil level alert it may be an indication of inadequate oil charge; however, it could also indicate that the oil is not being recovered from the low-side of the system.

2.Begin running the unit at full load for 11/2 hours. Use the manual Test Mode feature of Service Test if the unit does not normally run at full load.

NOTE: An adequate load must be available.

3.After running the unit for 11/2 hours at full load, allow the unit to restart and run normally. If low oil alarms persist, continue with the following steps.

4.Close the liquid line service valve and place a pressure gage on top of the cooler. Enable the Service Test feature and turn the Enable/Off/Remote switch to the enable po- sition. Start the desired circuit by turning it on under the TEST function: CP.A for compressor A, CP.B for com- pressor B, or CP.C for compressor C.

5.When the compressor starts successfully observe the cooler pressure when the pressure reads 10 psig (68.9 kPa), turn the Emergency Switch (SW2) to the OFF position. The compressor should stop.

6.Open the liquid line service valve and allow the unit to restart normally. If low oil level alarms persist, continue with the following steps.

7.If none of the previous steps were successful, the unit is low on oil charge. Add oil to the oil separator using the 1/4 in. access fitting that the discharge pressure transducer is mounted to.

8.To facilitate the oil charging process, ensure that the unit is not running when adding oil. The system is under pres- sure even when the unit is not running, so it is necessary to use a suitable pump to add oil to the system.

9.Using a suitable pump, add 1/2 gal (1.9 l) of oil to the system. Continue adding oil in 1/2 gal (1.9 l) increments until the problem is resolved, up to a maximum of 1.5 gal (5.7 l). If it is necessary to add factory oil charge levels to the system contact your local Carrier representative.

Oil Filter Maintenance — Each circuit has one oil filter locat- ed externally to the compressor. Oil line pressure drop is monitored by the control. Oil line pressure drop is calculated by subtracting oil pressure (OP) from discharge pressure (DP). If the oil line pressure drop exceeds 30 psi (206.8 kPa) for 5 minutes the control will generate a High Oil Filter Pressure Drop alert. The High Oil Filter Pressure Drop alert will not shut down the compressor, but instead indicates that the oil filter is dirty. If oil pressure line losses exceed 50 psi

(344.7 kPa) then the control will shut down the circuit on Maximum Oil Filter Differential Pressure Failure.

CAUTION

Compressor oil is pressurized. Use proper safety precau- tions when relieving pressure.

Replacing the Oil Filter — Close the oil line ball valve locat- ed in front of the oil filter. Connect a charging hose to the 1/4-in. access fitting port located downstream of the valve and bleed off oil trapped between the service valve and the oil solenoid valve. A quart of oil is typically what is removed during this process. Remove the charging hose. Unscrew the nuts from both ends of the oil filter and remove the oil filter. Remove the protective caps from the new oil filter and install, being careful not to lose or damage the new O-ring located on the new oil fil- ter. Draw a vacuum at the Schrader port. Remove the charging hose and open the oil line ball valve. Check both fittings for leaks.

Cooler

SUCTION SERVICE VALVE — The suction service valve is a factory-installed option for 30XW units. It is located in the suction outlet of the cooler. The suction service valve is bolted between the cooler outlet and the suction flange piping. The suction service valve shaft has a locking device located on the shaft to lock the valve in either a fully open position or a fully closed position. The locking device must be pulled out prior to moving the valve handle to a fully open or a fully closed posi- tion. See Fig. 47A and 47B.

A30-4843

CLOSED AND UNLOCKED

SUCTION SERVICE VALVE

Fig. 47A — Suction Service Valve Locking Device,

Closed and Unlocked

A30-4844

OPENED AND LOCKED

SUCTION SERVICE VALVE

Fig. 47B — Suction Service Valve Locking Device,

Open and Locked

64

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Carrier 30XW150-400 specifications Cooler, Quantity Totaline Part no, P903-2325, P903-2301, P903-2305
Page 63 Page 65

30XW150-400 specifications

The Carrier 30XW150-400 series is a line of water-cooled chillers that exemplifies innovation, efficiency, and reliability in commercial cooling solutions. Designed for medium to large-scale applications, this series is ideal for a variety of settings, including commercial buildings, industrial processes, and chilled water systems.

One of the standout features of the Carrier 30XW series is its efficiency. The chillers utilize advanced variable-speed compressor technology, which allows the units to adapt to varying cooling loads while minimizing energy consumption. This technology not only reduces operational costs but also contributes to better environmental sustainability by lowering greenhouse gas emissions.

The 30XW series chillers are equipped with high-efficiency, scroll compressors that operate quietly and provide significant energy savings. By utilizing enhanced economizer controls, these units can achieve higher efficiency ratings, especially in part-load conditions. The result is an impressive Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER), making these units a smart choice for energy-conscious businesses.

In terms of reliability, the Carrier 30XW150-400 series features robust construction and an array of safety and monitoring systems. The units come with advanced diagnostics that help in quickly identifying and addressing any operational issues. This proactive approach ensures reliability and minimizes downtime, which is crucial for maintaining optimal temperature controls in critical environments.

Additionally, the chillers incorporate environmentally friendly refrigerants that comply with the latest regulations, making them a sustainable choice for modern commercial applications. Their compact design allows for flexible installation options, and the integrated control systems provide the ability to optimize performance based on specific building management demands.

User-friendly interfaces and remote monitoring capabilities further enhance the ease of operation, allowing facility managers to have real-time insight into performance metrics and system health. This level of control contributes to better maintenance planning and maximizes the lifespan of the equipment.

In summary, the Carrier 30XW150-400 series of water-cooled chillers combines advanced technology, energy efficiency, and reliable performance, making it an ideal solution for various commercial and industrial cooling needs. With its commitment to innovation and sustainability, Carrier continues to set the standard in the HVAC industry.
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