Service Guide

3942-B 3942-BB 3942-BC

3942-C 3942-CB 3942-CC

3943-B 3943-BB 3943-BC

3943-C 3943-CB 3943-CC

Centralized Oil Lubricator

Description

CAUTION

These lubricators are to be used with mineral and synthetic oils. The use of alternate products may cause damage to components.

It is mandatory to ensure aerosol is delivered to the machine component prior to machine startup. Damage to component(s) can occur.

The lubricators in the 3942 and 3943 series are either basic models or plate mounted.

Basic Lubricator

The basic lubricator models require additional accessories prior to operation.

The lubricators in this series can contain either a 1.0 or a 2.3 cfm (28 or 65 l/m) nozzle assembly. Additional models are created by including a 120 V ac oil heater. See Figure 1.

Plate Mounted Lubricator

All of the basic models can be plate mounted. These models include a filter/ regulator and can contain a 120 V ac solenoid valve. See Figure 1.

Specifications

Lubricator

Model

3942 Series

3943 Series

Outlet

3/4 " NPT

Lubricator Assembly

Nozzle Output

(Nominal)

Pressure Relief

Valve cfm l/m psi Bar

1.0

2.3

28

65

10 0.7

120 V ac

Oil Heater

Amperage

0.9 A

Filter

Size

Filter/Regulator

Air Inlet

Maximum Inlet

Pressure psi Bars

5-Micron 1/4 " NPT 150 10.3

Table 1 Lubricator Model 3942 and 3943 Series Specifications

120 V ac Solenoid Valve

Conduit

Connection

1/2 "

Amperage

60 mA

670735

Basic

Lubricator

3942-B

3942-C

3943-B

3943-C

Plate

Mounted

Lubricator

3942-BB

3942-BC

3942-CB

3942-CC

3943-BB

3943-BC

3943-CB

3943-CC

Low-Level

Switch

120 V ac

Oil Heater

Basic Lubricator

3942-B

3942-C

3943-B

3943-C

Nozzle

Output

See

Specifications

Table

120 V ac

Solenoid Valve

Figure 1 Lubricator Model 3942 and 3943 Series

Plate Mounted Shown with Solenoid Valve

Filter/

Regulator

Alemite Corporation

PO Box 473515, Charlotte, North Carolina 28247-3515 www.alemite.com

Copyright

©

2001 by Alemite Corporation

This document contains confidential information that is the property of Alemite Corporation and is not to be copied, used, or disclosed to others without express written permission.

SER 3942-B

Revision (8-02)

SER 3942-B Centralized Oil Lubricator

Revision (8-02)

Figure 2 Lubricator Model 3942 and 3943 Series- Exploded View

2 Alemite Corporation

Centralized Oil Lubricator

Numeric Order Part #

B

B

3942-C

3942-BC

3942-BB

3942-CC

3943-C

3943-BC

3943-BB

3943-CC

SER 3942-B em No.

Alemite Corporation 3 Revision (8-02)

SER 3942-B Centralized Oil Lubricator

Figure 3 Lubricator Models 3942-B, 3942-C, 3943-B and 3943-C - Exploded View (w/ Section View of Head Assembly)

Revision (8-02) 4 Alemite Corporation

Centralized Oil Lubricator SER 3942-B

Item

No.

Part No.

Description Qty

20

21

Cover (w/o wiring diagram)

Gasket

22

23 387366

24 171000-5

25 131266

Head Assembly (w/ locating pins)

Screw Assembly, Oil Adjustment

O-Ring, 1/4 " ID x 3/8 " OD

Gasket

Nozzle Assembly, 1.0 cfm (28 l/m) 1

26

27 171018-12

28 387297

29 387323

30 387333

31 387340

32 387295

33

Nozzle Assembly, 2.3 cfm (65 l/m)

O-Ring, 3/8 " ID x 1/2 " OD

Switch Assembly, Low-Level, 120 V ac 1

1

1

Heater Assembly, Oil, 120 V ac

Connector, 3/4 " -16

Plug, 3/4 " -16

Screen, Inlet

Tube Assembly, Oil Pickup

1

1

1

1

1

39

40

41

42

34 Reservoir Assembly (1-gallon) [4 liter] 1

35 387309-7 Gauge Assembly, Level 1

36 387345

37 387342

38

Valve Assembly, Safety Relief

Valve Assembly, Loader

Setscrew, 5 -40 x 1/4 " 1

1

1

43

Screw, Ground, 10 -32 (Green)

Strip, Terminal

Screw, 3 -48 x 7/16 "

Screw, 1/4 " -20 x 2-1/4 "

Screw, 10 -32 x 5/8 "

2

4

1

1

4

1

1

1

1

Legend:

Part numbers left blank (or in italics) are not available separately designates a repair kit item

1

2

Notes

Numeric Order

Part # (Item #)

131266 (25)

Qty of 2 in Kit 171000-5 (24)

171018-12 (27)

383831-4 (26)

387291 (22)

387292 (34)

Model 3942-B, 3942-C

Model 3943-B, 3943-C

387294

387295

387297

387299

Model 3942-C, 3943-C

387304

387306

387313

(33)

(38)

Model 3942-B, 3943-B 387309-7 (35)

387312 (40)

(41)

(20)

(32)

(28)

(21)

387323

387333

387340

387341

387342

387345

387346

387348

387360-1

387366

(36)

(39)

(42)

(26)

(23)

(29)

(30)

(31)

(43)

(37)

Part No.

393685

393686

393687

Repair Kits

Kit

Symbol

Description

Kit, Seal

Kit, Nozzle (for 1.0 cfm nozzles)

Kit, Nozzle (for 2.3 cfm nozzles)

Part No.

393688

393689

393690

Kit

Symbol

Description

Kit, Cover

Kit, Terminal Strip

Kit, Reservoir

Alemite Corporation 5 Revision (8-02)

SER 3942-B Centralized Oil Lubricator

Basic Lubricator

The basic lubricator is comprised of the following components:

• head assembly

• oil adjustment screw

• loader fitting (for filling)

• pressure relief valve

• nozzle and baffle assembly

• oil inlet screen and pickup tube

• one-gallon (4 liter) reservoir

• low-level switch

• oil heater (optional)

Wiring and Installation

A wiring diagram mounts on the underneath side of

Cover (20) for systems that include the low-level switch and/or the oil heater. See Figure 3.

Refer to Service Guide SER COLS for details on the installation of these lubricators.

Operation

These lubricators mix oil with compressed air to create a fine aerosol.

The amount of aerosol dispensed is dependent on the following. The:

• size of the nozzle

• setting of the adjustment screw

• air pressure setting

120 V ac Solenoid Valve

The 120 V ac solenoid valve on the plate mounted lubricator functions as an automatic on/off switch.

Refer to Service Guide SER COLS for further details on lubricator operation.

Overhaul

NOTE: Lubricate O-Rings 24 and 27 with clean oil prior to installation. See Figure 3.

Revision (8-02)

Changes Since Last Printing

Added Models 3942-BB and 3943-BB

6 Alemite Corporation