Legal For Trade (Lft) Operation And Lft Sealing - OHAUS CD-11 Manual De Instrucciones

CD-11 Indicator
3.1 Legal for Trade (LFT) Operation and Sealing
Before this product can be used in legal-for-trade or legally controlled applications, it must be inspected in
accordance with local weights and measures or approval agency regulations. It is the responsibility of the
purchaser to ensure that all pertinent legal requirements are met. Please contact your local weights and mea-
sures office or authorized manufacturer's representative for further details.
Legal for Trade (LFT) operation is possible through a software controlled
LOCSW menu which can be set to lock out the CAL, SEtuP, rEAd, and Print
menus by setting the lock settings to ON. When the menus have been locked
and the Indicator has been calibrated, the Indicator can be used to operate in
a legal for trade application after sealing. The software settings work in
conjunction with a Lock Switch ( CAL jumper) located on the PC board. The
Indicator MUST be calibrated prior to performing this procedure.
Procedure
Perform the procedure in section 2.6.7 and set all menu items ON. This
effectively locks all menus from being changed but can be viewed.
Remove the front cover from the Indicator to expose the PC board and tilt it
back. Be careful as the cover is connected to the PC board by a flexible
cable.
Refer to the illustrations on the right and note the position of the CAL jumper.
The first illustration shows the jumper in place. To lock out the menus,
remove the jumper and position it on one pin as shown in the second
illustration. This removes the jumper and stores it in the event it has to be re-
positioned.
Replace the four cover screws and one sealing screw.
Replace the batteries and battery cover.
After the Indicator has been tested and found to comply with local applicable
regulations by local approving personnel, it may be sealed as follows:
LEAD AND WIRE SEAL
Replace the pan head screw with the hex socket security screw and washer in
the plastic bag containing the accessories. See illustration at right. Place
wire seal through the hole as shown and compress lead seal in place.
PAPER SEAL
If an audit trail or paper seal will be used, install the pan head screw to the
case and place seal over the screw area. The sealing area is located on the
bottom of the case in a recessed area.
EN-25
DISPLAY
J3
JUMP 1
JUMP 2
CAL
J4
1 2 3 4 5 6 7
+EXE +SEN +SIG CGND -SIG -SEN -EXE
PC Board Connections.
CAL
J4
1 2 3 4 5 6 7
+EXE +SEN +SIG CGND -SIG -SEN -EXE
CAL Jumper Shown in Stored or
ON Position.
HEX SOCKET HEAD SCREW
LEAD SEAL
PAPER SEAL
PAPER SEAL
Sealing Methods
1 5
J5
J6
J7