Sargent and Greenleaf 2740 Manuale utente

page 1

Model 2740 High Security Safe Lock

Installation Instructions

Document 630-745

Revised 7/22/2010

Mounting Considerations:

• This lock requires setup and adjustment with

the use of a setup module after installation. The

installation cannot be completed without the use

of a setup module. Setup modules are only issued

to S&G Certiﬁed Technicians who have sucessfully

completed specialized training on the 2740 lock.

• The Sargent & Greenleaf 2740 safe lock is

designed to use the same mounting screw

locations as common S&G mechanical and

electronic safe locks. In most instances it can

easily be mounted in place of these locks.

• The 2740 lock bolt is drilled and tapped to

accept an extension, if necessary. When attaching anything to the lock bolt,

make sure the end of the lock bolt (not the extension) can retract within 0.125 inch (3 mm) of being ﬂush with the

end of the lock case.

• The 2740 accommodates right-hand, left-hand, vertical-up and vertical-down mounting applications. A single model

can be splined for any of these applications during the installation process.

• The dial ring diameter is approximately 3 ¾ inches, matching the diameter of the majority of S&G dial rings.

• Each 2740 lock and cover is conﬁgured to work together. If installing multiple locks, be very careful to avoid using

a cover with any lock other than the one with which it was shipped from S&G’s factory.

• Each 2740 lock requires one CR2450 coin cell battery and one CR123A lithium camera-type battery. Any time

one battery is replaced, the other should be replaced. Fresh batteries should be included with your lock. If not, be

careful to avoid using partially drained batteries.

• Modiﬁcations to the lock are not recommended and will void the manufacturer’s warranty.

• Personal information that can be directly related to a combination holder, such as a birth date, street number, or

phone number, should not be used in creating a lock code. Avoid combinations that could be easily guessed. Be

sure to change the combination from the factory setting 50-25-50 to one of your own choosing.

• The S&G 2740 is warranted against defects in materials and workmanship. This warranty applies only to locks

installed and set up by an S&G certiﬁed technician.

Sargent & Greenleaf, Inc.

A Wholly Owned Subsidiary of Stanley Security Solutions, Inc.

PO Box 930, Nicholasville, Kentucky 40340-0930 USA

Phone (859) 885-9411

Phone (800) 826-7652

FAX (859) 887-2057

FAX (800) 634-4843

Sargent & Greenleaf S.A.

9, chemin du Croset

1024 Ecublens, Switzerland

Phone +41-21 694 34 00

FAX +41-21 694 34 09

page 2

Installation Notes

The Sargent & Greenleaf model 2740 lock was designed to meet Federal Specification FF-L-2740A. It

can be retrofit to most security containers currently in service.

It is necessary to remove only the lock cover for installation. All other parts should remain in place as received from the

manufacturer.

Most safes and cabinets will already be prepped for lock installation. In the unlikely event that this is not

the case, locate exact position you want for the lock on the mounting plate. Using the template on the

last page of these instructions, drill and tap four holes for the attaching screws (1⁄

4" X 20 or M6 for metric

applications). Using the template, drill a hole for the spindle through the mounting plate. The minimum

spindle hole diameter is 3⁄

8" (9,5 mm). The optimum hole size is 1⁄

2" (12,7 mm) diameter.

Wear the included static discharge wrist strap whenever you are about to remove the lock cover, or

whenever the cover is off of the lock body. The strap should be grounded to any bare metal of the safe

(container).

It is necessary to remove only the cover when attaching the lock. All other parts should remain in

place as received from the factory. When the cover is off of the lock, handle it carefully. It houses the

microprocessor and related circuitry. Do not touch the circuit board.

INSTALLATION INSTRUCTIONS

1. Make sure the lock bolt is in the extended position (Figure 1). Carefully remove the lock cover.

CAUTION: Handle the cover by its edges. Do not touch the circuit board or pin towers. Any inadvertent contact

may introduce a static discharge which will damage the electronics. Static discharge may cause immediate

lock failure or delayed failure.

CAUTION: Do not attempt to remove the drive cam or the lever.

2. Mount the lock body in place with four 1

⁄

4 X 20 attaching screws provided (Figure 1). Apply one drop

of Loctite 242® threadlocker to the threads of each mounting screw near the tip. No Loctite should be

allowed to contaminate the inside of the lock case.

Figure 1

Extended

Lock Bolt

Drive Cam

Mounting Screw Locations

(indicated by white circles)

Lever

3. Attach the dial ring to the front of the safe or cabinet by loosely installing the

attaching screws to hold the dial ring in place for alignment. The dial ring

opening index should be at the 12 o’clock center position (Figure 3).

Figure 3

Opening Index

page 3

7. Measure and/or mark the excess

spindle that projects beyond the

recessed inner surface of the drive

cam (Figure 5). When the spindle

is cut to length, it can be as much

as two threads short of flush with

the surface of the drive cam, but it

cannot extend beyond flush.

8. Remove the dial without moving the dial ring out alignment. Remove one dial ring screw, apply a drop

of Locktite® 242 threadlocker to the threads near the tip, re-install the screw, and tighten firmly. Do the

same with the remaining screw. Remove the masking tape used to temporarily hold the ring in alignment.

9. Remove the spring and washers from the dial. Cut off the excess spindle where you marked it, and

remove any burrs from the end. You may also find that the spindle threads more easily into the drive

cam if you bevel the end of the freshly cut spindle slightly. Do not discard the excess spindle piece as

you may use it to seat the spline key later in the installation.

Figure 4

Misaligned

Dial Edges Flush

with Ring

Aligned

Note that the small gap between the dial and ring is uneven when the dial ring is misaligned, but is even when the dial ring is properly

aligned. The center of a properly aligned dial ring is in perfect alignment with the center of the spindle hole in the drive cam.

Excess Spindle

Figure 5

Mark Here

4. Slide the dial spring over the spindle hub at the base of the

spindle. Place the metal dial washer on top of the spring, then

the white washer on top of the metal washer, as shown in the

photo to the right.

5. Hold the drive cam in place in the lock case with one hand and

thread the dial/spindle assembly into the cam until the dial’s

edge is flush with the top of the dial ring (Figure 4, far right) or

until the dial stops. Make sure the flat washer and spring stay in

place on the spindle hub while installing the dial into the cam.

Caution: When threading the dial into the cam, be careful to avoid

putting excessive pressure on the cam by pushing the spindle

against it.

6. The alignment of the dial and ring is important to the proper operation of the lock. Very good alignment

must be obtained. The dial should be flush and centered with the top surface of the dial ring for true

centering (Figure 4). When the dial ring is as perfectely aligned as possible, use masking tape to hold

it in position. Use several pieces of tape to make sure it doesn’t move out of alignment.

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10. With the dial spring and flat washer in place, insert the dial into the lock. Hold the drive cam in

place, positioned for its gate (Figure 6) to receive the fence of the lever assembly, and thread the dial

into the cam until the top of the dial is flush with the top surface of the dial ring (Figure 4, far right)

or until the dial stops.

11. Turn the dial counterclockwise until zero is aligned with the opening index of the dial ring. If it was

necessary to turn the dial less than ½ turn, back it out of the drive cam one additional revolution. The

proper spindle spline keyway and drive cam spline keyway should now be closely aligned.

12. After the spline keyways are aligned, insert the spline key as far as you can with your fingers

(sequence in Figure 7). Make sure the spline key is oriented to fit into the recess in the cam. It

will only fit properly one way. The spindle and cam are now correctly splined for the way the lock is

mounted (RH, LH, VU, or VD). Use a pin punch or the piece of excess spindle you cut off in Step 9 to

carefully tap the spline key until its underside just touches the top surface of the drive cam. Be very

careful to avoid striking anything other than the spline key. With the spline key fully seated, the dial

must turn freely with no rubbing or interference. Once the spline key is seated, install the included

2-56 spline key screw firmly, but do not overtighten. If desired, you can carefully apply a very small

amount (much less than a drop) of Loctite® 242 threadlocker to the screw threads near the tip before

installing it.

Figure 6

Spline Key

Gate

Figure 7

Note: You can easily remove the spline key after removing the 2-56 screw by

threading the longer of the lock’s two cover screws into the center of the spline

key. As you turn the screw into the spline key, the key will be extracted. This

spline key is reusable.

LH Mount

RH Mount

VU Mount

VD Mount

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13. Install the two batteries in the underside of the cover (Figure 8). The circular coin cell battery goes in

first, positive side up. Then the camera-type battery is inserted as shown. When the coin cell battery

and then the main battery are installed, you will hear a beep. If you do not hear the beep, remove

both batteries for one minute, then repeat the installation process. Always insert the coin cell battery

first then the camera-type battery. Ten seconds after the batteries are installed, the lock does a

battery check. If the battery check passes, another beep will be heard. If not, remove both batteries

for one minue, then repeat the battery installation process. If the second battery installation does not

produce the two beeps, repeat the battery installation process using new batteries.

14. Place the cover on the lock body, and fasten with the two screws provided. The longer screw goes in

the cover screw opening closest to the change key receptacle (Figure 9). Tighten securely.

Figure 9

Change Key

Receptacle

15. The Spy-Proof® dial cover is attached to

the dial ring at two points (Figure 10), one

on each side of the dial ring. The cover is

attached using a 4-40 socket head cap

screw (requiring a 3/32” hex driver) at each

of the two locations. Put one small drop of

Loctite 242® threadlocker on the tip of each

cap screw before installing. The cover does

not need to be removed for combination

changing. The Spy-Proof® cover must

be installed for the lock to meet Federal

Speciﬁcations.

Figure 8

Figure 10

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16. Again, check to make sure the dial turns freely.

17. Place the self-adhesive orange label inside the safe or container, where it is readily visible when the

door or locking drawer is open. For instance, the locking drawer’s inside cover is a good location.

There is also a 5/8" wide label on the same sheet that is sized to fit on the top surface of file drawer

back plates (Figure 11), where it will be in plain view of anyone who opens the drawer.

The lock installation is complete. Refer to the operating instructions for calibration and combination

setting procedures. The installation is not complete until the lock is calibrated.

1 15

⁄

16" (49,2 mm)

(17,5 mm)

⁄

16"13

⁄

16"

(20,6 mm)

RIGHT-HAND

LEFT-HAND

VERTICAL-UP

VERTICAL-DOWN

LOCK TEMPLATE

Figure 11

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