68
6.4.5
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 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 6.4.4
before measuring the Brake Lining and Motor Cover wear.
2)
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
3)
Compare the measurement with the values listed in
Table 5-9
.
Replace the Brake Drum and/or
Motor Cover if the "A" measurement is smaller than the discard limit
6.4.6
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 6.4.3
and
reassemble the parts in reverse order of removal.
6.5
Trolley Motor Brake Adjustment
6.5.1
To keep your trolley working in optimum condition and prevent possible down time, it is recommended
to check your motor brake at regular intervals. Intervals must be adapted in accordance with the
application
.
6.5.2
Before proceeding, ensure that the electrical supply for the hoist or trolley has
been de-energized (disconnected). Lock out and tag out in accordance with ANSI Z244.1
“Personnel Protection –Lockout/Tagout of Energy Sources”.
6.5.3
Do
NOT
set the brake torque to a value beyond the setting range. Failure to
comply with this instruction may cause a rapid stop or large slip, leading to serious accidents
6.5.4
Motor Brake Check
- See
Figure 6-7
.
1)
Move the trolley hoist into a safe position
2)
The Trolley Motor Bake is factory set/adjusted for optimal brake force. The brake torque can be
changed in accordance with brake wear. The brake torque can be changed by changing the
projection amount (Dimension A) of the Adjusting Bolt on the back of the trolley motor. Using
Figure 6-7
and
Table 6-10
to adjust the trolley motor brake as needed.
3)
Check that the locknut is not loose after changing or adjusting the brake torque. Failure to comply
with this instruction may cause the hoist to overrun, leading to serious accidents.
Содержание Harrington RY Series
Страница 15: ...15 2 3 Part Names Figure 2 1 RY Part Names...
Страница 42: ...42 Figure 3 20 Hoist Upper and Lower Limit Switch ULLS...
Страница 57: ...57 Table 5 8 Various shapes that require the wire rope to be replaced...
Страница 67: ...67 Table 6 9 Motor Brake Gap Capacity Code Brake Gap G inch mm RY030 RY050 0 032 0 8...
Страница 104: ...104 9 3 Trolley Frame Parts Figure 9 3 Trolley Frame Parts...
Страница 112: ...112 9 10 Hoist Motor Parts Figure 9 10 Hoist Motor Parts...
Страница 114: ...114 9 11 Trolley Motor Parts Figure 9 11 Trolley Motor Parts...
Страница 116: ...116 9 12 Control Panel Box Parts Figure 9 12 Control Panel Box Parts...
Страница 119: ...119 This Page Intentionally Left Blank...