OHAUS CKW-55, Инструкция по эксплуатации

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CKW-55 CHECKWEIGHER APPENDIX B EN-55
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 Measures office or authorized manufacturer’s
representative for further details.
LFT or legally controlled operation is possible through the Setup Menu and can be secured using an internal hardware
switch located on the PC board. Access to the hardware switch may be denied using additional mechanical methods. The
scale must have been calibrated prior to performing this procedure.
This procedure must only be performed by authorized personnel.
B.1 Setup Procedure
Set up the scale, and perform an accurate calibration. If required, use the LOCK menu to lock out changes to any additional
menu items, (Refer to Section 3.6.8, Lock Menu). In the Setup menu, set Legal-For-Trade to On (Refer to Section 3.6.1).
Note : If the scale has been previously set for Legal For Trade operation, it will be necessary to remove the seal and set the
LFT switch Off before proceeding. Removal of the existing seal will make the scale legally unusable for Legal for Trade use
until a new seal is put into place
B.2 Locking Metrological Parameters
To prepare the scale for Legal For Trade operation, it is necessary to set the internal LFT switch on. To access the switch,
first remove all AC power from the scale system. On the scale containing an optional rechargeable battery system, set the
scale Off using the
ON/ZERO/OFF button.
B. LEGAL FOR TRADE
CAUTION: ELECTRICAL SHOCK HAZARD. REMOVE ALL POWER CONNECTIONS TO
THE INDICATOR BEFORE SERVICING OR MAKING INTERNAL CONNECTIONS.
THE HOUSING SHOULD ONLY BE OPENED BY AUTHORIZED AND QUALIFIED PERSONNEL,
SUCH AS AN ELECTRICAL TECHNICIAN.
Remove the four flat head screws at the left and the right
sides of the Indicator housing and pull the front panel of
the Indicator forward. Remove the internal cover plate by
removing the 3 screws at the corners, (Refer to Figure
B-1). One of screws has a countersink washer. This
washer may be used as part of the mechanical seal.
Figure B-1. Inside the Indicator Cover.