Hardy ANY-WEIGH Bench Scales - Manual (Page 41)

Chapter 8 - Troubleshooting
8-1
CHAPTER 8 - TROUBLESHOOTING
SCOPE All the information in Chapter 8 pertains to the trou-
bleshooting and resolution of operating problems that
may occur. All maintenance personnel and users
should be familiar with Chapter 8 before attempting
to repair the ANY-WEIGH Scale.
Problem:
Scale Does Not
Respond When
Weight is Applied Step 1. Make sure the scale is wired correctly to
the instrument or network and there are no
breaks in the wiring.
Step 2. Check to see if there is packing material or
debris wedged under or against the scale.
Scale Indication is
not linear Step 1. Check the instrument for proper calibra-
tion.
Step 2. Check to see if there is packing material or
debris wedged under or on the side of the
scale.
Step 3. Make sure all electrical connections are
tight with no corrosion and that there has
not been an ingress of moisture to the sys-
tem.
Scale Reads
Backwards Step 1. Check for correct wiring to the instrument.
The +- signal or excitation wires may be
reversed.
Scale Reading
drifts or is Erratic Step 1. Make sure all electrical connections are
tight with no corrosion and that there has
not been an ingress of moisture to the sys-
tem.
Step 2. Verify that the instrument or network is
operating properly.
Step 3. Make sure there are no high voltage wires
close to the scale.
Step 4. Check that the scale and instrument are
properly grounded.
Step 5. If high static electricity is present a ground
strap should be added from the top cover
to the chassis and to earth ground.