7
an operational limit device.
- Turning of loads under normal operating
conditions is not allowed. (Optional additional
equipment should be requested from the
manufacturer.
- Do not throw the hoist down. Always place it
properly on the ground.
FUNCTION / OPERATION
Attaching the load
Loads should be attached by lashing ropes or
lashing chains which are specifically adjusted
to the load weight. Loads must not be attached
by using the load chain as a slinging device.
The load must always be seated in the centre
of the hook.
Lifting the load
Pulling the hand chain (Fig. 11) in clockwise
direction, the load will be raised.
In order to avoid sparking, neither hand or load
chain should bang or strike the floor or any
other place.
Note:
If this is not possible, consult the
manufacturer!
Lowering the load
Pulling the hand chain (Fig. 11) in anticlock-
wise direction, the load will be slowly lowered.
In order to avoid sparking, neither hand or load
chain should bang or strike the floor or any
other place.
Note:
If this is not possible, consult the
manufacturer!
Yale overload protection (optional)
The overload protection device is set at ap-
prox. 25% (
±
15%) overload.
The adjustment of the overload protection
device must be carried out by a competent
person only.
When exceeding the pre-set overload limit, the
protection device will be activated and prevent
further lifting of load.
Pulling the hand chain in anticlockwise direc-
tion will release the jammed protection device
and permit smooth lowering of the load.
DECOMMISIONING
Putting out of service / storage
If the hoist has to be taken out of service for a
longer period of time, hand and load chains
should be protected against corrosion. For this
purpose, a light oil film should be applied to
the chains. The brake thread should be lightly
lubricated at the brake disc and at the driving
pinion, in order to avoid fixed corrosion of the
brake.
Note:
At temperatures below 0
°
C the brake
discs can freeze! For this reason the hoist
should be stored after operation always with
the brake in closed position. For this purpose
turn the hand wheel in clockwise direction and
simultaneously hold the carrying load chain
strand.
INSPECTION, MAINTENANCE AND
REPAIR
Inspections are instigated by the user.
Maintenance and inspection
Inspections should be carried out at least an-
nually by a competent person. Adverse oper-
ating conditions may dictate shorter inspec-
tion periods. The inspections are mainly visu-
al and functional and shall establish that the
components of the hoist are in perfect condi-
tion and do not show signs of damage, wear,
corrosion or other irregularities. All safety de-
vices are to be checked for completeness and
effectiveness. Initial operation and recurring
inspections should be registered in the at-
tached Yale works certificate of compliance.
Also consult the maintenance and inspection
intervals on page 17.
Spare parts
Repairs may only be carried out by specialist
workshops that use original Yale spare parts!
Check brake function
The daily brake inspection should be made
as follows:
- Attach a small load, raise over a short dis-
tance and lower again.
- During this process let the hand chain go
several times.
The load must be held perfectly and must not
keep on running.
Attention:
Should the load chain keep on run-
ning, stop using the hoist immediately and
consult the manufacturer.
Lubricants
In order to reduce wear, the load chain should
be lubricated from time to time with a chain
spray lubricant or machine oil. Gear train and
brake winding should be greased in disassem-
bled condition as well.
Attention:
The brake winding should be lubri-
cated slightly only, in order to avoid contact of
the lub with the friction discs.
Range of application/lubricant
Brake winding:
Teccem e.K. 708W
Plus Neu
Chain lubrication:
Shell Tonna T68,
Rocol M070,
Rocol MV 3
Gearbox and bearing
seat lubrication:
Gleitmo 805K,
Dropping point > 130
°
C
INSPECTION PRIOR TO INITIAL
OPERATION
Each unit must be inspected prior to initial
operation by a competent person. The inspec-
tion is mainly visual and functional and shall
establish that the product is in safe and per-
fect condition. Any signs of damage, wear,
corrosion or other irregularities should be re-
ported and removed if necessary.
Inspections should be made by a representa-
tive of the manufacturer or the supplier al-
though the company can assign its own suita-
bly trained personnel.
INSPECTION BEFORE STARTING WORK
Before starting work, inspect the hoist includ-
ing chains(s) and all load carrying construc-
tions every time for visual defects and defi-
ciencies. Furthermore test the brake and make
sure that the load and hoist are correctly at-
tached. For this purpose a short work cycle of
lifting/pulling or tensioning and releasing
should be carried out .
Note:
At ambient temperatures below 0
°
C,
the brake discs may freeze: In this case sus-
pend the hoist according to instruction with a
load attached. Start lifting the load slowly un-
til the load chain is under tension. Now re-
move the tension by pulling at the hand chain.
Repeat this process twice before starting fur-
ther operation.
Inspection of top and bottom hooks
Inspect the top and bottom hooks for defor-
mation, damage, cracks, wear and corrosion
marks at least once per year.
Adverse applications may dictate shorter in-
spection intervals. Hooks, which have been
rejected during inspection, must be replaced
by new ones. Welding on load hooks, e.g. to
adjust for wear, is not permissible. Load hooks
must be replaced, if the mouth opening is
widened by 10% (see Fig. 14) or the nominal
dimensions have been reduced by 5% on ac-
count of wear. Nominal dimensions and wear
limits are given in table 3 below. When ex-
ceeding the following limits, the components
have to be replaced.
