OHAUS CKW3R Service Manual

Also see for CKW15L: Instruction manual Instruction manual

Contents

OHAUS CKW3R Service Manual Manual pdf 16 page image

CHAPTER 3 MAINTENANCE AND REPAIR PROCEDURES3.3 Setting the Overload StopsThe Overload Stop gaps must be checked and reset if the Load Cell is replaced. Thisprocedure requires two test masses: one equal to the base’s capacity, and one equal to 150%of its capacity. (To check capacity, refer to the Specification Table in Section 1.7.)There are six screws in the Lower Housing of the Base. Each is capped with a round OverloadStop Nut and a Jam Nut. (See Figure 3-1.)To adjust the Overload Stops:1. Apply 100% load at each corner stop, one at a time; adjust the round Overload Stop Nutand lock it with the Jam Nut when the Upper Housing just touches the Overload StopNut.2. Repeat this for all four corners.3. For the two sets of Overload Stop Nuts and Jam Nuts located in the center of the Base,use a load of 150% of the Base’s capacity placed on the center of the Platform. Whenthe Overload Stop Nuts are properly set, lock the Jam Nuts in place.4. Test the Base with Indicator connected to see if full capacity can be achieved.Overload Stop NutJam NutLoad Cell SpacerLoad CellFigure 3-1. CKW Load Cell, Spacer Overload Stop Nuts and Jam Nuts.Ohaus Corporation www.ohaus.com 3-2 CKW Base Series Service Manual