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USER MANUAL
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Red Rooster Lifting Limited
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Nauta House, The Meadows, Oldmeldrum, Aberdeenshire, AB51 0EZ
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Tel: +44 (0) 1651 872101
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M01-AH13-ATLF REV1
MAINTENANCE
4.6
CHANGING TROLLEY SILENCERS
Trolleys are fitted with SMC 'AM' type silencers sized to suit the trolley valve. They are easily fitted and removed by a thread end. Silencers should
be replaced when damaged or the trolley speed is reduced by contamination.
4.7
FITTING OR REPLACING LOAD CHAIN
The hoist will require to be hung up with an airline connected.
The chain must be fed over the pocket wheel from the slack end anchor side with the weld of every second link facing away from the wheel
axis i.e. weld outwards.
Care must be taken not to twist the chain during installation. This is best achieved by holding the live end of the chain as it emerges from the
hoist, if the hoist is reeved on two parts of chain, feeding it through the free limit lock, through the bottom block wheel and again as it emerges,
thereafter feeding it up to the anchor pin. If the chain cannot be fitted to the anchor without rotating it through 90 degrees, the end link should
be removed.
Run the chain through the hoist, leaving a short tail at the ‘slack’ end. Anchor the slack end without twisting the chain.
Feed the chain over the load wheel.
It is very easy to trap or damage the chain if extreme care is not exercised. Always examine the first link of chain after passing it over the load
wheel. If damaged, remove the damaged link(s).
REPLACING EXISTING CHAIN
Cut away the centre portion of a link of the old chain to allow a chain diameter to pass through. Connect the spare link to the last link of the old
chain and the first link of the replacement chain. Use the old chain to draw the replacement chain though the hoist. (Retain the spare link to be
re-used).
FITTING CHAIN TO AN UNCHAINED HOIST
A handy tool comprises a length of either soft insulated wire (about 2mm diameter) or a piece of flexible nylon tube of the same diameter
approximately 500mm long. To the end of this attach a similar length of strong twine.
The soft wire or tube is fed over the wheel, its flexibility allows it to follow the chain guide and re-emerge at the opposite side. The twine
is attached to the end of the chain and drawn through, pulling the chain against the wheel. By applying power VERY SLOWLY in the
same direction of winding, the load chain is dragged into the first pocket and over the load wheel. If any resistance is felt as the chain attempts
to enter the pocket it is imperative that the chain is released from the pocket before trying again. Otherwise the chain will become trapped
and damaged.
Only use quality load chain approved by Red Rooster for use on our hoists.
ITEM
CHECK METHOD
CRITERIA
WHEN FAILED
Deformation
Flaw
Entanglement
▪ Check visually
▪ Check visually for no foreign matter
as attached sputter.
▪ No deep notch
▪ No deformation such as twist
▪ No attached sputter
▪ No entanglement
▪ No crack
▪ Wear (see 4.8 + 4.11)
Replace the load chain
DANGER
Crack
Flaw
DANGER
DANGER
DANGER
Wear
Summary of Contents for AT2S-LF
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