Siemens milltronics TEST CHAIN, Инструкция по эксплуатации

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7ML19985JD01 Test Chain – INSTRUCTION MANUAL Page 11
Installing
Position local control station within direct viewing of the storage reel and the belt scale.
Minimum requirements for the control station (supplied by customer):
• Forward / Reverse or Raise / Lower
• Three position (on, off, on) spring return configuration
Upright posts constructed of angle iron may be placed at opposite end of the test chain.
These may be welded to main conveyor stringers on both sides, for securing the test
chain’s free end while in use.
Use eye hooks attached to the posts to secure the wire rope cables from the test chain
shackle. This positions the test chain, allowing it to track centrally on the belt.
Refer to installation or outline diagrams, and review all areas of the installation to ensure
that the safety aspects of the mechanics have been met. All welding, hardware,
fasteners, wiring, location, and other aspects must be sound and secure.
Operation Guidelines
1. Using the control station lower the test chain onto the conveyor belt. Spread the test
chain out until it spans across the weigh idler suspension: two idlers from the
approach side to two idler on the retreat side of the weigh suspension. (This is often
referred to as the A2 approach idlers to R2 retreat idlers. Refer to “Chain Position
and Restraints” on page 4).
2. Secure both ends of the test chain using wire rope cables attached to the eye bolts
of the frame on the storage reel and at opposite end. The test chain should lay flat
on the center roll of each idler, with the links of the chain in a horizontal position to
the conveyor belt.
Notes:
• Follow the calibration details for the manufacture’s belt scale to perform a
Zero calibration.
• Check for and adjust to a acceptable repeatability and error. Ensure the
free end of the chain has been released from the storage reel.
• Frequency of calibration is determined by the repeatability of the span
results and the monitoring of the scale’s performance.
CAUTION:
During this step of the operation, the conveyor belt must be stopped, to
prevent injury to operating personnel.
Test Chain.book Page 11 Tuesday, April 19, 2005 9:34 AM