Verification; Sealing - OHAUS CKW-55 Instruction Manual

EN-56
B.2 Locking Metrological Parameters (Cont.)
Position the LFT switch (S1) to the direction shown by the arrow. (Refer to Figure B-1.) With this change, the Legal For Trade
menu setting and all LOCK menu settings now become non-alterable.
Reinstall the cover plate. Install the 3 screws to their original position. Reposition the front housing and reinstall the 4 screws
at the sides of the Indicator housing.
B.3 Verification
Prior to the mechanical sealing, the scale should be inspected for correct operation by an authorized Weights & Measures
representative.
The Legal For Trade setup can be verified during power on display sequence. When both the Legal For Trade menu setting
and the LFT switch have been enabled, the message LFT ON will be briefly shown. (If only the LFT switch has been enabled,
the message LOC ON will be shown.)
B.4 Sealing
Four different methods are available for sealing. The method used will depend on the scale application and the requirements
of the local Weight and Measures regulations.
Internal sealing may be required in applications where an external mechanical seal would be impractical or disallowed.
Internal sealing allows for more frequent internal inspection and cleaning of the Indicator housing.
External sealing may be used where complete access to the internal Indicator housing needs to be restricted. If the housing
needs to be opened frequently, this method may not be efficient unless authorized personnel are available to reseal the
housing each time.
APPENDIX B
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.
CKW-55 CHECKWEIGHER