Carrier 39LH03-25, 39LB, 39LD, 39LA, 39LC, 39LE Lubrication, Lubricant Data, Manufacturer Lubricant

Page 38

10.Check fan shaft diameter at bearing mount. If worn by more than .001 in. below nominal, shaft should be re- placed.

11.Install new bearing, tighten holddown bolts and then tighten bearing locking collar and setscrews.

12.Make certain fan wheel does not rub sides of fan housing after installing new bearings.

13.Recoat fan shaft with a rust inhibitor or grease.

14.Replace sheave and belts. Adjust and align as described in Installation sections on installing sheaves and V-belts.

15.Remove insulation protection.

16.Replace access panels.

17.Restore electrical power.

Fan and Shaft Removal (Fig. 44) — The fan wheel and shaft may be removed through inlet side of fan housing.

1.Remove drive belts as described in Fan Shaft Bearing Re- moval on page 36.

2.Block up fan wheel within housing to prevent dropping when bearing bolts are removed.

3.Loosen and remove bearing holddown bolts.

4.Remove bearing support channels and inlet ring from one side.

5.Remove fan shaft and fan wheel from unit.

6.Remove fan shaft from fan wheel.

7.Replace shaft and wheel into fan in the reverse order of their removal.

8.Inspect bearings and if serviceable, replace on shaft.

9.Align fan wheel and shaft assembly in fan scroll. Check cutoff location if wheel failure damaged cutoff plate. See Fig. 45.

10.Tighten bearing holddown bolts, bearing setscrews and shaft setscrews.

11.Field balancing of shaft and wheel is recommended.

IMPORTANT: Replacement shafts must have a diam-

eter tolerance at bearing mount of

+ .0000

nominal.

– .001

 

 

Carrier-specified parts are recommended.

 

Lubrication

MOTORS — Lubricate in accordance with nameplate at- tached to motor or with manufacturer’s recommendations included with motor.

BEARINGS

Fan Bearings — Lubricate fan bearings every 3 months with suitable bearing grease. Typical lubricants are given in Table 13.

Inlet Vane and Outlet Damper Bearings — These bearings are oil-impregnated. Annually lubricate with a few drops of nondetergent SAE (Society of Automotive Engineers) 20 oil.

Table 13 — Lubricant Data

MANUFACTURER

LUBRICANT

Sunoco

Prestige 42

Texaco

Multipak 2

Texaco

Regal AFB-2*

Mobil

Mobilplex EP No. 1

*Preferred lubricant because it contains rust and oxi- dation inhibitors.

Fig. 44 — Fan Shaft and Bearing Removal

(Unit without IGVs shown)

39L UNIT SIZE

CUTOFF

CUTOFF CLEARANCE

A

B

 

03

65/8

7/8

06

8

1

08

103/8

11/2

10

93/4

13/8

12

93/4

13/8

15

12

15/8

18

153/4

2

21

153/4

2

25

201/2

211/16

Fig. 45 — Fan Cutoff Plate Data (in.)

38

Image 38
Contents Contents → Safety ConsiderationsIntroduction Unit IdentificationPage Preinstallation Service Area Requirements SizePhysical Data Unit SizeUnit Rigging Details Mixing Box Damper Operating Torque In.-lb InstallationMixing Box 39L Unit Size TorqueRecommended Actuators Page Install Sheaves on Motor and Fan Shafts IGV Actuator Bracket InstallationDetermining Sheave-Shaft Overhang PD Range Belt Small Deflection Force LB SheaveCross SectionWater and Steam Coil Piping Recommendations Coil Freeze-Up ProtectionLow, Medium or High Pressure Coil Piping Dripping Steam Supply to Condensate Return Chilled Water Coil Circuiting Data Steam Coil Connection Sizes Face Split Coil Suction Line Piping Direct Expansion Coil Circuiting Data Small Face Area 39LB, 39LC, 39LF Unit Size Circuiting Type ROW COIL††Side Connector Hot Gas Bypass Data Distributor Part Numbers= 1.68 x .33 x Face Split Coil Manifolding Typical Electric Heater Installation Typical Electric Heater Wiring Schematic Electric Heater Data Steps FLAWire Size Load Amps Fan Discharge Positions, Fans without IGVsSTART-UP Bolt Size TorqueCoil Cleaning ServiceFan Motor Replacement GeneralField-Installed Coils 39LA,LD Only Coil RemovalHorizontal Unit Slant Coil Removal 39LA Units Sizes Vertical Unit Slant Coil Removal 39LD Units Sizes Page Changing Coil Hand DX and ALL Water Coils Steam Coils Only FiltersFan Shaft Bearing Removal Filter Data Filter Arrangement, 2-in. and 4-in. FlatManufacturer Lubricant LubricationLubricant Data 39L Unit Size Cutoff Cutoff ClearanceMetric Conversion Chart Copyright 2004 Carrier Corporation

39LG, 39LH03-25, 39LD, 39LE, 39LB specifications

The Carrier 39 series, encompassing models 39LA, 39LF, 39LC, 39LB, and 39LE, represents a prominent line of rooftop packaged units that combine robust performance, energy efficiency, and advanced technology for commercial applications. Designed to provide reliable heating and cooling solutions, these units stand out for their versatility and innovative features.

The 39LA model offers high efficiency and flexibility, making it ideal for various building types. It incorporates advanced economizer capabilities that enhance indoor air quality while reducing energy costs. The unit is equipped with a dual-walled cabinet, which not only improves durability but also ensures quiet operation, making it suitable for noise-sensitive environments.

The 39LF model further enhances energy savings, featuring a unique hybrid heat pump system. This system allows for both heating and cooling through an integrated design, reducing the need for separate systems and streamlining maintenance requirements. The 39LF also boasts high Seasonal Energy Efficiency Ratio (SEER) ratings, contributing to lower operating costs without compromising comfort.

The 39LC variant excels in humid climates, employing advanced dehumidification technologies that effectively manage indoor moisture levels. This model is often utilized in environments such as gyms, restaurants, and hotels where humidity control is vital. Its variable-speed compressors adjust output based on demand, optimizing energy consumption while maintaining consistent comfort levels.

The 39LB model focuses on enhanced filtration and air quality improvements. Its engineered design accommodates high-efficiency particulate air (HEPA) filters, crucial for spaces that require stringent air quality standards. This model also includes smart controls that allow for precise temperature adjustments, ensuring optimal comfort in any setting.

Finally, the 39LE unit emphasizes user-friendly interfaces and smart technology integration. The built-in Wi-Fi capability enables remote monitoring and operation, allowing managers to adjust settings from anywhere, improving overall energy management. Additionally, the 39LE’s compatibility with Building Management Systems (BMS) facilitates seamless integration into existing setups.

In summary, the Carrier 39 series 39LA, 39LF, 39LC, 39LB, and 39LE present a comprehensive array of features designed for various commercial heating and cooling applications. With an emphasis on energy efficiency, advanced air quality management, and user-friendly technology, these units continue to set the standard for rooftop packaged units in the industry. Their innovative characteristics not only enhance comfort but also promote sustainability, making them a smart choice for modern commercial environments.