Rice Lake DeckHand/DeckHand Rough-n-Ready System - Manual (Page 14)

10 DeckHand Portable Floor Scale
3.4 Installing Protective Clamshells
Stainless steel clamshells—load cell protectors—are mounted around the load cells to provide an extra degree of
spray protection. The lower protector is slightly smaller than the upper one which overlaps on all sides. The load
cell cable exits through the bottom surface of the lower clamshell then through a hole in the mounting plate.
Figure 3-2 Clamshell Load Cell Protectors
1. To attach clamshells, remove all channels, load cell screws and load cells. Place lower clamshell directly
on mounting plate with overload stop screw centered in the clamshell’s largest hole.
2. Add mounting spacer and align all four holes. Position load cell on spacer and insert load cell screws and
lock washers from beneath mounting plate through the clamshell and spacer and into the load cell. Tighten
the four screws finger tight only so the cell can still be moved slightly for final positioning.
3. For final positioning, measure to ensure load cells are parallel to each other and to the frame. It may be
easier to mount one load cell first so it is parallel to the frame, then measure equal distances between the
ends of the two load cells to get them parallel with each other. When correctly positioned, re-tighten the
load cell screws to original torque specifications (20 ft-lb for mild steel screws, 12 ft-lb for stainless steel
screws).
4. Position top spacer blocks on load cells, then set upper clamshells on spacer blocks and align holes. Place
load cell channels so all four holes line up, then turn in the self-centering countersunk screws. Tighten to
same torque settings as lower load cell screws.
5. Replace scale deck onto load cell channels.
6. Reset overload stop screws by turning them in until they just contact the load cell, then back off 0.020".
7. Calibrate scale according to Section 2.6.
3.5 Mounting Indicator Brackets
A universal mount plate is welded to the DeckHand mast. The plate is predrilled to match the bracket of most
indicators and are supplied with the appropriate painted or stainless steel mounting hardware.
Figure 3-3 Indicator Bracket
Overload Screw, 0.020” gap Bottom Spacer Block
Top Spacer Block