Yale Electric Chain Hoist CPE
Yale
electric
10
7. Functional test
All units with two or more chain strands must be inspected
before every operation for twisted or kinked chains. Chains
on 2-strand units may become twisted if the bottom block
is rolled over . If a strand is twisted disconnect it from the
hoist and re-thread it correctly . In some cases it may be
necessary to remove the last link.
8. Before initial operation lubricate the unloaded chain and
test all hoist functions under a no-load condition.
6.4 Load and suspension hooks
Inspect the hooks for deformation, damage, surface cracks,
wear and signs of corrosion as required but at least
annually. Adverse working conditions may dictate shorter
periods. Hooks that do not fulfill all requirements must be
replaced immediately, W elding on hooks to compensate
for wear or damage is not permissible. Hooks must be
replaced when the mouth of the hook has opened more
than 10% (Fig.14) or the nominal value of other dimensions
has decreased by 5% due to wear . Nominal dimensions
and wear limits are shown in the following table.
6.5 Trolleys
In particular check following parts:
• Side plate
For cracks or deformation in particular around the areas of
screwed connections.
• Trolley wheels
Visually check for cracks and wear on trolley wheel flanges.
Grease the transmission.
• Crossbars
In particular around threaded areas for cracks.
• Fasteners
Check nuts, screws and locking devices for tightness.
6.6 Electric chain hoist in general
In particular check following parts:
• Threaded connections in general
Check all nuts, screws and locking devices for tightness.
• Chain container
Ensure the chain container is securely fastened. Check
for cracks or wear.
• Suspension pins
(Connection between hoist and suspension hook resp.
trolley) Check for cracks or wear. Ensure all safety devices
are in place and secure.
6.7Overload protection device
The overload protection device ( slipping clutch) is factory
set to 110% ± 10% of the rated capacity and can be checked
by lifting a suitable load. If the device slips at the rated
capacity load it can be adjusted as follows (see Fig. 19):
• Unscrew the threaded pin (9) which locks the straining
screw (45).
• Increase the moment of friction by turning the straining
screw (45) in clockwise direction.
• Re-check the adjustment with a suitable load.
• Lock the straining screw (45) with the threaded pin (9).
6.8 Gearbox
The gearbox is practically maintenance-free. Service is
therefore reduced to changing the oil.
Oil change
The oil (approx. 0,3 l) is to be changed every 5 years or at
the latest after 400 operating hours.
Disassemble the gear cover (51) by removing the cylinder
screws (52) and unscrew the screw plug (44). Place the
hoist horizontally and turn so that the oil can drain from the
fill hole into a suitable container (approx. 30 minutes).
Replenish the gearbox oil. W e recommend a mineral oil
viscosity class ISO-VG 460, e.g. FINA GIRAN L 460. Finally
re-adjust the overload protection device.
Disassemble the gearbox
Attention: The gearbox has oil lubrication
1. Pull the coupling (50) of f the gear shaft (35). Loosen
screws (52) and remove gearbox cover (51).
2. Remove screw plug (44) and seal (45).
3. Place gearbox upside down and drain oil from the fill
hole into a suitable container .
4. Loosen threaded pin (47), remove ball (46) and
unscrew fixing screw (42).
5. Remove cup springs (41).
Fig. 14
CPE 16 / 20
CPE 25 / 30 CPE 32 / 40 / 50
Inspection Dim. Nominal Wear Nominal Wear
value limit value limit
mm mm mm mm
Hook saddle b
2
24 22,8 29,5 28
Hook saddle h
2
35 33,2 44,5 42,3
Hook opening a
2
43 47,3 54 59,4
To Next Page
Loading...
Need help?
General
