Lodestar CM Hoist, Руководство по эксплуатации

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13
Minimum Frequent Inspections
Type of Service Item
Normal Heavy Severe
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 12.
d) Load chain for adequate lubrication, as well as for signs of wear,
damaged links or foreign matter – see page 14.
e) Load chain for proper reeving and twists.
Table 4
Monthly
Weekly
to
Monthly
Daily
to
Weekly
Minimum Periodic Inspections
Type of Service Item
Normal Heavy Severe
a) All items listed in Table 4 for frequent inspections.
b) External evidence of loose screws, bolts or nuts.
c) External evidence of worn, corroded, cracked or distorted hook block, sus-
pension 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 guides for wear or burring where the chain enters the
hoist.
Severely worn or damaged parts should be replaced.
f) External evidence of excessive wear or brake parts and brake adjustment –
see page 16.
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 dam-
aged insulation.
i) Inspect trolley trackwheels for external wear on tread and flange, and for
wear on internal bearings 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 5).
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 block for wear and tighteness*.
Replace if worn.
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.
Table 5
Yearly
Every
Six
Months
Every
Three
Months
*When tightening the special, dead end socket head screw, it should be held firmly 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 49).