CHAPTER 1 GETTING STARTEDNavigator Series Service Manual 13 Ohaus Corporation www.ohaus.comIf the scale is set for LFT (Legal for Trade – EC / OIML “M” or NTEP / MC “N” models), LFTflashes briefly after the software revision number and before a countdown which allows for thescale electronics to stabilize.Allow time for the scale to stabilize after moving it from an area which is at a different temperaturethan the area where it is to be operated. Allow one hour for each 5°F (2.7°C) temperature changebefore using the scale. After temperature stabilization, allow an additional 20 minutes after turningthe scale on, for the scale electronics to stabilize.When the scale is turned on, the last mode and unit will be active.1.6.4 Power OffTo turn the scale OFF, press and hold Zero/ until the display indicates OFF, then release.1.6.5 Menu SetupProgrammable features of the Navigator scales are contained in menus which are accessedthrough the Display Panel’s control switches. The Menu Structure is described in Section 1.8.(For more detail on using the menus, see the Instruction Manual.)Note: The Menu Lock switch limits changes to the Cal, Setup, Mode and Unit menus. The switchin type approved models may set some balance settings as required by the approval agency. Togain access to these submenus, see the next section.1.7 LEGAL FOR TRADE (LFT)When the scale is set for LFT (on “M” and “N” models), the following menu settings cannot beaccessed / changed: Calibration, Mode and Units. The switch in type approved models may setsome balance settings as required by the approval agency. In non-approved models the Menu lockswitch will also limit access to certain menu items. The Service Menu (see section 1.8.2) is notavailable when the switch is “on”.To regain access to the locked menu settings, move the Menu lock switch to the left (away from themiddle), which turns LFT off.Figure 1-4 Menu Lock SwitchLocked UnlockedAfter the Menu Lock setting has been turned off, the scale must be inspected in accordance withlocal weights and measures regulations before it can be used in LFT mode again. Local authoritiesmay secure the switch using paper seals, wire seals or plastic ties.Note: “M” and “M” models- When the Menu Lock switch is set to “on” certain menu items will beforced to the required setting and the required menus will be locked.LFT SETUP PROCEDURE1. Set the Geographical Adjustment Factor (GEO) according to the current location. (SeeAppendix D. Possible values are from 1 to 31.) The setting is in the Service Menu: pressZERO and Tare simultaneously during power on, hold until “Ramp” is seen. Press No threetimes until GEO appears, then press Yes. Then continuously press No until the desired