Page 12
Test Chain – INSTRUCTION MANUAL
7ML19985JD01
3.
Run conveyor at the normal operating belt speed and observe the performance of
the test chain. The rollers of the chain should run freely without incident and track
centrally to the middle of belt. No side motion or “snaking” should be observed.
4.
Continue to run the conveyor and perform the span calibration as outlined in the
scale manufacturer’s manual.
Ensure the following upon completing the exercise:
•
Stop the conveyor
•
Retrieve the test chain by using the control station to raise the test chain into the
storage reel.
•
Leave the wire rope cable attached to the shackle.
•
During raising, ensure the chain shackle is free to move and does not bind onto any
portion of the storage reel. Once completely retrieved, secure the free end of the
chain using the wire rope.
Maintenance
Test Chain
•
Check all parts of the test chain regularly.
•
Ensure the links and rollers are free to move on shafts.
•
Replace broken or missing retaining pins.
•
Ensure wire rope anchoring cables are not frayed or twisted
•
Ensure clips are tight on the cable.
•
Lubricate the chain with light machine oil to prevent rusting and ensure safe and
free movement. Either submerge the chain in a oil bath, or spray with common
lubricants or rust prohibitor.
•
Place a hood or cover over the storage reel to minimize negative effects of dirt or
debris falling onto the test chain.
•
Annual verification of the chain should be made against a known, certified platform
with scale and length to precision measurements. Recalculate with the following
measurements.
Note:
Snaking causes the results to be non repeatable and varying. Eliminate by
readjusting the wire rope guide cable (stays) until the problem is solved. Tension
should not be applied to the retrieving cable.
CAUTION:
Disable the gear motor by removing power from the unit. This prevents
any unauthorized or accidental release of the chain during normal belt operation. The
test chains should never be released while material is on the belt.
Test Chain.book Page 12 Tuesday, April 19, 2005 9:34 AM
Summary of Contents for milltronics TEST CHAIN
Page 1: ...Instruction Manual April 2005 TEST CHAIN milltronics ...
Page 4: ...ii ...
Page 18: ...Notes ...
Page 19: ......
