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1.4. Mechanical strength
Chain hoists and components have been ma-
nufactured to resist stresses applied to them
while in operation under specified conditions.
This requirement is equally complied with du-
ring transport, assembly and disassembly of
the same. Materials employed have been selec-
ted taking into account foreseeable use, spe-
cially regarding wear, corrossion and ageing
of the same. Gearing has been manufactured
in alloyed steel of 120 kg/mm2 and has been
cemented to attain a surface hardness which
is highly resistant to wear. Hooks have been
manufactured with an anti-ageing steel with
aluminium content, as specified by UNE 58-
512-83 Standard (ISO 2766-73-12-01). URREA's
Manual Chain Hoists and its components have
been designed to withstand static test over-
loads without being subject to permanent de-
formation.
1.5. Dynamic and static testing
All of URREA's Manual Chain Hoists leave the
factory having been subject to dynamic tests of
150% of the maximum operating load.
2. RISKS DURING LOAD
MANIPULATION
Rated Load: This is the load indicated on the
identifying plate of the chain hoist. It is the
maximum load which can be hoisted and this
load must not be exceeded.
2.1. General recom-
mendations
- Take precautions
when
manipula-
ting loads, always
ensuring that you
are complying with
necessary
safety
measures.
- Incorrect use, faul-
ty manipulation or
lack of maintenan-
ce may generate irreversible consequences.
- Do not remain directly under load, not allow
anybody else to do so.
- Do not exceed rated load of the device. In the
event of any doubt, check the weight of the
load.
- Raising and lowering of the load will be ca-
rried out on a vertical plane, whenever possi-
ble.
- When transporting dangerous loads (mol-ten
metal, parts adhered to electromagnets) alert
personnel in order that they may take due pre-
cautions.
- Do not leave chain hoist with sus-
pended load.
- Do not use the load chain as
siling.
2.2. Options
- Stainless steel chain.
- For working in inverted position.
- Load limiter.
An asbestos free friction unit which
prevents excess loads from being lif-
ted. Chain hoists are supplied with the limiter
adjusted for 125% of rated load.
3. ASSEMBLY, OPERATION AND
INSTRUCTIONS FOR USE
3.1. Check-ups to be carried out before assem-
bly
Prior to assembly of the manual chain hoist,
the following check ups must be carried out:
- Check that, after transport, both the chain
hoist and its visible external parts are in good
condition.
- Lubricate the load chain.
- Grease the area of contact of the hooks.
- Check that the area where it is to be located is
free from obstacles, and that the course is free
in the event that the chain hoist is coupled to
a trolley.
- Check that nominal load, described on the
identification plate is correct.
Incorrect use
E N G L I S H •
U ser's manual
a
17
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