Yale
Electric Chain Hoist - CPV/F
®
10
8.2 REGULAR INSPECTIONS, SERVICE AND TESTING
According to prevailing national / international occupational
safety and health regulations, hoisting equipment must be
inspected at least annually by a competent person. Adverse
working conditions may dictate shorter inspection periods.
The commissioning and inspection details can be noted on the
test certificate delivered with the hoist or on page 14 of this
manual.
Repairs may only be carried out by specialist workshops that
use original Yale spare parts.
The inspection must determine that all safety devices are
present and fully operational and cover the condition of the
hoist, lifting gear, accessories and supporting constructions.
If required by the Occupational Health and Safety Organisation,
the results of the adequate inspections and competent
performance of repairs have to be substantiated. If the
electric hoist (with capacity of 1 tonne and up) is installed
in a carriage, or if the load is moved in one or several directions,
the installation is considered as a crane and inspect accordingly.
Attention:
Inspections must be - as far as possible - be
carried out in an unloaded condition and the hoist / trolley
power supply must be disconnected.
8.2 REGULAR INSPECTIONS, SERVICE AND TESTING
The load chains are case-hardened and carry the designations
4 x 12.2 DAT, 5 x 15.1 DAT and 7.1 x 20.5 DAT.
The CPV/F electric hoists are specially designed to use this type
of chain. For this reason, only chains that have been approved
by the manufacturer may be used in these hoists.
Lubricating the load chain
The load chain is to be lubricated before initial operation and
every month, however, latest after 50 operating hours.
Adverse
working conditions such as, excessive dust or continued heavy
duty can dictate shorter periods between lubrication.
• Before the chain is lubricated it must be cleaned. Flame
cleaning is forbidden. Use only cleansing methods and agents
that do not corrode the chain material. Avoid cleansing methods
that can lead to hydrogen brittleness, eg. spraying or dipping
chain in caustic solvents. Also avoid surface treatments that can
hide cracks and flaws or other surface damage.
• The chain must be lubricated in a no-load condition so that
lubricant can enter between the links, eg. by dipping in oil.
• Motor oil of the viscosity 100, e.g. Shell Tonna T68 can be
used to lubricate the chain. For very dusty applications use a
dry lubricant.
Inspecting the load chain for wear
Load chains must be inspected every 3 months or the latest
after 200 operating hours.
Adverse working conditions such as,
excessive dust or continued heavy duty can dictate shorter
periods between lubrication.
Visually inspect the chain over its full length for damage,
deformation, cracks, flaws, elongation, wear or corrosive pitting.
Link chains must be replaced when the nominal thickness “d”
on any part of the chain has been reduced by more than 10%
or when the pitch “t” is elongated by more than 5% or over 11
pitches (11 x t) by 2%. Nominal dimensions and wear limits are
shown in the following table 2.
Chains that do not fulfil all requirements must be replaced
immediately.
Replacing the load chain
• 1-fall design
1. Disassemble the bottom block.
Unscrew both screws and separate the housing halves.
2. Remove the chain end stop.
Remove the 2 screws. The chain is now free.
3. Fitting the new chain.
Cut the second to last link open on the loose end of the load
chain to form a “C”. Remove the last link and connect the new
chain. The new chain must be fitted so that the welds on the
standing links face towards the chain guide and away from the
load sheave. Operate the hoist in the lowering direction to feed
the chain through the hoist.
4. Fitting lower block and chain end stop.
Slide the end buffers over the loose ends of the load chain and
refit bottom block and chain end stop. The chain end stop must
be fitted so that at least 1 link remains free (see Fig. 1).
Attention:
Install new hex. nuts with clamping part.
5. Before initial operation lubricate the unloaded chain and test
all hoist functions under no-load condition.
• 2-fall design
1. Remove the chain anchor bolt.
The chain anchor bolt is situated on the underside of the hoist
body. First unscrew the four screws of the chain anchor. Then
tap out the anchor bolt with a drift.
Attention:
Do not damage anchor bolt or bore.
2. Pull the load chain through the bottom block and remove the
chain end stop.
Fig. 13
Tab. 2
12.2 DAT / B = 5 x 15.1 DAT / C = 7.1 x 20.5 DAT
Inspection Dimension Nominal value Wear limit
mm mm
A B C A B C
Length over 11 pitches 11 x t 134.2 166.1 225.5 134.8 167.3 226.9
Length of 1 pitch t 12.2 15.1 20.5 12.4 15.4 20.9
Diameter d 4 5 7.1 - - -
Mean thickness d
1
+ d
2
4 5 7.1 3.6 4.5 6.4
2
Yale
CPV/F
®
