Rice Lake BCi Belt Scale - Maintenance & Troubleshooting Manual - Manual (Page 8)

4 Belt Scale Maintenance Instructions
Belt Scale Maintenance Checklist
Item Daily Weekly Monthly Quarterly Annually Description
Scale area - debris x Clean scale area. Determine cause of debris and take
steps to remedy
Zero calibration Perform zero calibration procedure. If change is
greater than .25%, identify cause and correct. Record
results.
Condition of idler
rolls X Inspect idlers for wear and damage. Replace rolls and
bearings as necessary.
Span calibration Perform auto span simulated load tests. Check
repeatabilty and record results.
Belt scraper Adjust or replace blades if worn.
Belt condition Visual inspections for cuts, tears, or worn edges
Belt take-up X Inspect for free travel, (bearings, belts, etc)
Speed pulley Inspect for wear, material build-up, belt wrap. Check
bearings also.
Speed sensor
coupling Inspect for tightness, wobble and corrosion
Load cell offset X No load output must be within 1% of rated maximum
Load cell balance Multiple load cell scales must be balanced to within 1
mV
Static weight
condition Check for corrosion, location and clearances
Resolution time Verify time for 1 belt revolution at maximum speed
Zero reference
number Compare zero number with reference an maximum
change is 2%/year
Audit trail Review scale history
Line voltage Measure hot and neutral. Hot to ground, neutral to
ground and correct as needed.
Alignment X Complete per manual
Excitation Verify value and stability
Belt length Measure and verify. Perform acquire test duration if
changes noted.
Check rods Inspect check rods. Rods must be straight, spherical
washers without corrosion.
I/O Check and verify performance of all I/O being used.
Dead band Confirm settings and adjust if necessary
Auto zero track limit Record data
Auto zero track
correction Record data
Passwords Confirm and revise if required
Wire terminations Inspect for tightness and corrosion
Cable integrity Visual and ohm check (corrosion, moisture,
deterioration)
Spherical washers Inspect for corrosion, pitting, etc. Replace if
necessary
Material factors Verify with weighed load test.
Table 2-1. Maintenance Checklist