Rice Lake RL-MPS, Operation Instructions Manual

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Mechanical Physician Scale Installation and Operation Instructions - Troubleshooting 9
4.0 Troubleshooting
The accuracy of the Mechanical Physician Scale, when calibrated at the factory, falls within plus or minus 1/4
pound accuracy. For the most accurate weight, always use the scale on a hard, level surface and stand in the
center of the scale platform with the weight distributed as evenly as possible. If an error occurs or seems
excessive, check the following:
5.0 Specifications
Problem Possible Fix
Zero balance of beam The weigh beam must be balanced so the pointer comes to a rest in the
center of the eye loop (shown in Figure 3-1) when both poise weights are set
at zero (see Figure 1-1 for poise weight location). Adjust the balance by
turning the zero adjusting screw at the left end of the weigh beam (see
Figure 3-1).
Beam does not move freely Check if the beam pointer is touching the side of the eye loop in its range of
travel.
Visually ensure that the linkage is centered and properly aligned. Occasionally
during shipping, the alignment will become skewed. The linkage must be free
floating in order for the scale to weigh properly. The linkage can be seen by
looking up underneath the top weigh beam if the scale is slightly tipped to one
side.
Platform rocks excessively When you push down on any corner of the platform, you should not feel any
significant rocking. Ensure scale is setting on a level surface.
Beam does not move at all during a weighment This can be caused by the poise weights being set to a higher weight than the
person’s actual weight. Reset the weights to a lower weight. Also check to
see that the steelyard rod is properly connected and aligned (see Figure 2-7).
Scale is out of calibration Recalibrate the scale by placing a known weight on the scale and moving the
zero adjusting screw to bring the scale back to zero.
Table 4-1. Troubleshooting Guide
RL-MPS RL-MPS-10 RL-MPS-20
Maximum Capacity 440 lb (200 kg) 450 lb (204 kg) 440 lb (200 kg)
Graduation 0.25 lb (0.1 kg)
Height Rod Range 24-84" (60-212 cm) N/A
Min. Value of Height per Division 0.125" (0.1 cm) N/A
Platform Size 14.75" x 10.75" (374.65 x 273.05 mm)
Table 5-1. Model Specifications