Welch Allyn 5002 Service Manual page 108

Cracked Base, Metal Frame -
broken, loose around the weld
edges
Mast is loose Loose Bolts
Inaccurate Mechanical Hang-
Weight Readings up on Platform
with the 4 Corner Assembly
Test being stable
and consistent
Inaccurate Blue EAR missing
Weight Readings on Load mount
with the 4 Corner
Test "Not" stable
Replace the Base.
Tighten the bolts that hold the MAST onto the base.
Inspect the 4 nylon feet – if missing or damaged replace Delron feet.
Tip and shake the scale gently see if something got lodged in the edge.
Take screw driver around the edge to dislodge any debris.
4 corner platform test using 25KG or 50lb certified weight
1. Apply weight evenly on the center of the scale. Weigh two
times and record your weight reading each time.
2. Remove weight from center and apply weight on each 4 corners
one at a time and Weigh two times and record weight reading
each time.
Examine your corner readings
Plot all readings and they should be within
center reading.
IF your corner readings are more than
reading.
The corner that reads the lowest is the problem area. Repeat corner
test if need be. Follow troubleshooting procedures to the platform.
Remove the hand rail.
Remove Grey Dust Cover - held on with Double Sided Tape.
Remove the top plate held on by 4 button head screws. If one of the
screws is damaged or missing replace it.
Inspect scale for debris or foreign objects.
Inspect the 4 Load mounts and ensure the blue ears are properly in
place, if missing or out of position replace blue ear.
108
0.4 lb./.2 kg from
±
2 lb/1 kg away from center
±