29
Table 6-1 Motor Brake Gap
Brake Gap (G)
inch (mm)
0.020 (0.5)
6.2.4 Brake Lining Inspection –The brake lining is designed for a long life and should provide years of trouble-free
service. If the brake lining is being inspected due to excessive load chain drift during operation (see Section
5.7), disassemble the motor brake and inspect all motor brake parts. Braking surfaces should be clean,
free of grease/oil and should not be glazed. Replace the Brake Drum and/or Motor Cover if necessary. For
normal inspections, the Brake Lining and Motor Cover wear should be measured as follows.
1)
Adjust the Brake Gap per Section 6.2.3 before measuring the Brake Lining and Motor Cover wear.
2)
Refer to Table 5-6.
3)
Measure the distance "A" using calipers and a straight edge. Place the straight edge across the edge of the
motor cover and measure from the straight edge to the face of the Pull Rotor.
4)
Compare the measurement with the values listed in Table 5-6. Replace the Brake Drum and/or Motor
Cover if the "A" measurement is smaller than the discard limit.
6.2.5 Motor Brake Unit Installation - After the brake is properly adjusted and inspected, carefully replace the
motor brake unit back into the hoist. Be sure to reseal the Motor Cover to motor frame surface using a
small bead of liquid (hi-temperature) sealant. Refer to Section 6.2.2 and reassemble the parts in reverse
order of removal.
6.3 Load Chain
6.3.1 Lubrication and Cleaning – refer to Section 6.1.
6.3.2 Load Chain Replacement:
1)
The hoist must be properly powered and operational in order to perform the following
procedures.
6.3.3
Be certain that the replacement chain is obtained from Harrington and is the exact size,
grade and construction as the original chain. The new load chain must have an odd number of links so that
Содержание TNER Series
Страница 37: ...This Page Intentionally Left Blank 37...
Страница 38: ...Figure 9 1 Housing and Motor Parts 38 9 1 Housing and Motor Parts...
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Страница 42: ...Figure 9 2 Gearing Parts 9 2 Gearing Parts 42...
Страница 44: ...Figure 9 3 Hook Parts 9 3 Hook Parts 44...
Страница 46: ...Figure 9 4 Chaining Parts 9 4 Chaining Parts 46...
Страница 48: ...Figure 9 5 Electric Parts 9 5 Electric Parts 48...
Страница 53: ...53 Appendix A Wiring Diagram...
Страница 54: ...54...