CM Lodestar A, Руководство по эксплуатации, техническому обслуживанию и каталог запасных частей

Страница: 19 / 128

19
00001996 (REV AC) 627NH October 2014
Table 4. Minimum Frequent Inspections
TYPE OF SERVICE ITEM
Normal Heavy Severe
Monthly
W
eekly to Monthly
Daily to W
eekly
a) Brake for evidence of slippage.
b) Control functions for proper operation.
c) Hooks for damage, cracks, twists, excessive throat opening, latch engagement and latch
operation - see page 18.
d) Load chain for adequate lubrication, as well as for signs of wear, damaged links or foreign matter
- see page 20.
e) Load chain for proper reeving and twists.
Table 5. Minimum Periodic Inspections
TYPE OF SERVICE ITEM
Normal Heavy Severe a) All items listed in Table 4 for frequent inspections.
Y
early
Every 6 Months Every 3 Months
b) External evidence of loose screws, bolts or nuts.
c) External evidence of worn, corroded, cracked or distorted hook block, suspension screws,gears,
bearings and dead end block and chain pin.
d) External evidence of damage to hook retaining nut and pin. Also check the upper suspension
adapter making sure it is fully seated in the hoist frame and that both screws are tight.
e) External evidence of damage or excessive wear of the liftwheel and hook block sheave chain
pockets. Widening and deepening of the pockets may cause the chain to lift-up in the pocket
and result in binding between liftwheel and chain guides or between the sheave and hook block.
Also, check the chain guide for wear or burring where the chain enters the hoist. Severely worn
or damaged parts should be replaced.
f) External evidence of excessive wear of brake parts, and AC brake adjustment - see page 22.
g) External evidence of pitting or any deterioration of contactor contacts. Check the operation of
the control station making sure the buttons operate freely and do not stick in either position.
h) Inspect the electrical cords and cables and control station enclosure for damaged insulation.
i) Inspect trolley trackwheels for external wear on tread and fl ange and for wear on internal bearing
surfaces as evidenced by a looseness on the stud. Suspension components for damage, cracks,
wear and operation. Also check suspension adapter screws for proper tightness - see page 11.
j) Inspect the loose end link, loose end screw and dead end block on double reeved units. Replace
worn or distorted parts.
k) Inspect the suspension lug or hook for excess free play or rotation. Replace worn parts as
evidenced by excess free play or rotation.
l) Inspect for signs of lubricant leaks at the gasket between the gear housing and back frame.
tighten screws holding back frame to gear housing. If leak persists, repack housing and gears
with grease and install a new gasket.
m) On the Models RT, RT-2, RRT and RRT-2:
1. Inspect shackle and lug pins for wear. Replace if worn.
2. Check dead end screw in lower hook black for wear and tightness*.
3. Check shackle pin for proper seating in groove of load bracket.
4. Inspect cloverleaf plate on bottom of sheave hanger for wear or burring. Replace if worn.
5. Inspect sheave stud nut and seat for wear. Replace if worn or damaged.
* When tightening the special, dead end socket head screw, it should be held fi rmly in place and torqued from the nut end only to avoid damage to the
screw and/or dead end chain link (Refer to step J on page 45).