SERVICE

ELECTRIC SHOCK HAZARD.

Turn off all power to unit before servicing. The ENABLE/OFF/REMOTE CONTACT switch on control panel does not shut off con- trol power; use field disconnect.

Electronic Components

CONTROL COMPONENTS — Unit uses an advanced elec- tronic control system that normally does not require service. For details on controls refer to Operating Data section.

30GTN,R AND 30GUN,R 040-110, AND 230B-315B UNIT CONTROL BOX — When facing compressors, main control box is at left end of unit. All incoming power enters through main box. Control box contains power components and electronic controls.

Outer panels are hinged and latched for easy opening. Re- move screws to remove inner panels. Outer panels can be held open for service and inspection by using door retainer on each panel. To use door retainers: remove bottom pin from door re- tainer assembly, swing retainer out horizontally, and engage pin in one of the retainer ears and the hinge assembly.

30GTN,R AND 30GUN,R 130-210, 230A-315A, AND 330A/B-420A/B UNIT CONTROL AND MAIN POWER BOXES — The main power box is on the cooler side of the unit, and the control box is on the compressor side. Outer pan- els are hinged and latched for easy opening. Remove screws to remove inner panels.

Compressors — If lead compressor on either refrigerant circuit becomes inoperative for any reason, circuit is locked off and cannot be operated due to features built into the electronic control system. Do not attempt to bypass controls to force com- pressors to run.

COMPRESSOR REMOVAL — Access to the oil pump end of the compressor is from the compressor side of the unit. Ac- cess to the motor end of the compressor is from the inside of the unit. All compressors can be removed from the compressor side of the unit.

IMPORTANT: All compressor mounting hardware and support brackets removed during servicing must be rein- stalled prior to start-up.

Following the installation of the new compressor:

Tighten discharge valves to —

 

 

Compressor(s)

20 to 25 ft-lb (27 to 34 N-m)

06E250

80 to 90 ft-lb (109 to 122 N-m)

06E265,275,299

Tighten suction valves to —

 

80 to 90 ft-lb (109 to 122 N-m)

06E250

90 to 120 ft-lb (122 to 163 N-m)

06E265,275,299

Tighten the following fittings to —

 

120 in.-lb (13.5 N-m)

High-Pressure Switch

OIL CHARGE (Refer to Table 30) — All units are factory charged with oil. Acceptable oil level for each compressor is from 1/8 to 3/8-in. of sight glass (see Fig. 35).

When additional oil or a complete charge is required, use only Carrier-approved compressor oil.

30GTN,R approved oils are as follows:

Petroleum Specialties, Inc. — Cryol 150 (factory oil charge)

Texaco, Inc.

— Capella WF-32

Witco Chemical Co.

— Suniso 3GS

30GUN,R approved polyolester (POE) oils are as follows:

•Mobil Artic EAL 68

•Castrol SW68

•ICI Emkarate RL68H

•Lubrizol 29168 (Texaco HFC Capella 68NA)

•CPI Solest 68

Table 30 — Oil Charge

COMPRESSOR

 

OIL REQUIRED

Pts

 

L

 

 

06E250

14

 

6.6

06E265

19

 

9.0

06E275

19

 

9.0

06E299

19

 

9.0

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

Cooler — The cooler is easily accessible from the cooler side of the unit. The refrigerant feed components are accessible from the control box end of the unit.

COOLER REMOVAL — Cooler can be removed from the cooler side of the unit as follows:

Open and tag all electrical disconnects before any work begins. Note that cooler is heavy and both fluid-side and refrigerant-side may be under pressure.

1.To ensure the refrigerant is in the condenser, follow this procedure:

a.Open the circuit breakers and close the discharge valves for the lag compressors in both circuits.

Do not close the discharge valve of an operating compres- sor. Severe damage to the compressor can result.

b.After the lag compressor discharge service valves have been closed, close the liquid line service valve for one circuit. Allow the lead compressor to pump down that circuit until it reaches approxi- mately 10 to 15 psig (68.8 to 103.2 kPa).

c.As soon as the system reaches that pressure, shut down the lead compressor by opening the com- pressor circuit breaker, then quickly close the dis- charge service valve for that compressor.

d.Repeat the procedure for the other circuit.

2.Close the shutoff valves, if installed, in the cooler fluid lines. Remove the cooler fluid piping.

3.Cooler may be under pressure. Open the air vent at the top of the cooler, and open the drain on the bottom of the cooler (near the leaving fluid outlet) to drain the cooler. Both the drain and the air vent are located on the leaving fluid end of cooler. See Fig. 24. Remove the cooler water- side strainer.

4.Disconnect the conduit and cooler heater wires, if equipped. Remove all thermistors from the cooler, being sure to label all thermistors as they are removed. Ther- mistor T1 is a well-type thermistor, and thermistor T2 is immersed directly in the fluid. See Fig. 24.

5.Remove the insulation on the refrigerant connection end of the cooler.

6.Unbolt the suction flanges from the cooler head. Save the bolts.

53

Page 52 Page 54
Page 53
Image 53
Carrier Air Conditioner Service, Electronic Components, Oil Charge, Compressor OIL Required, 06E250 06E265 06E275 06E299
Page 52 Page 54

Air Conditioner specifications

Carrier Air Conditioners have long been synonymous with reliability and innovation in climate control. Founded by Willis Carrier, the inventor of modern air conditioning, the brand has continuously set industry standards through state-of-the-art technologies and features designed to enhance indoor comfort.

One of the standout features of Carrier air conditioners is their energy efficiency. Many models are equipped with advanced inverter technology, allowing the compressor to adjust its speed based on the cooling demand. This results in decreased energy consumption, which not only reduces utility bills but also lessens the environmental impact. Recognizing the importance of sustainable practices, Carrier has integrated eco-friendly refrigerants into their systems, further promoting energy-efficient operations.

Carrier also emphasizes user comfort through its variable speed systems. These systems maintain consistent temperatures while minimizing temperature fluctuations, ensuring an even distribution of cool air throughout the home. Additionally, many Carrier models come with advanced air filtration systems, designed to capture allergens, dust, and other particulates, thereby improving indoor air quality.

The smart technology featured in Carrier air conditioners plays a key role in modern convenience. Many units are compatible with smart home systems, allowing users to control settings remotely via smartphones or voice-activated devices. With features like programmable thermostats, users can easily set cooling schedules to match their lifestyle, ensuring comfort while maximizing energy savings.

Durability and noise reduction are also central to the Carrier brand. Many models are designed with sound-dampening features, making them some of the quietest units on the market. This is particularly advantageous for residential use, where noise can disrupt daily activities and sleep.

In terms of design, Carrier air conditioners come in various styles and capacities to suit a wide range of spaces, from compact apartment units to large central systems for sprawling homes. Their extensive warranty and service offerings further reinforce Carrier’s commitment to customer satisfaction.

In conclusion, Carrier air conditioners represent a perfect blend of cutting-edge technology, energy efficiency, and user comfort. Their emphasis on sustainability and smart features positions them as a leading choice for homeowners seeking reliable and innovative climate control solutions. Whether for cooling a small room or an entire house, Carrier remains a trusted name in air conditioning.
Top Page Image Contents