Yale YBF-01 Originalbetriebsanleitung Seite 52

a) Pull out the complete wire rope (34) and
lock the drum with the manual drum
lockmechanism. Pull the stopper (11) and
turn it clockwise (30°) to place it in the
lower slot at lock-position (Fig. 6/Fig. 8).
b) Remove the load/device from the bottom
hook (42). Release all spring tension by
turning worm (50) counter-clockwise.
c) Remove grub screw (47) which is
screwed on the pulley (33) at the casing
opening (slot, see Fig. 6, Pos.12) and
remove old wire rope from pulley.
Replacement of the wire rope without
dismantling is only possible with the following
models:
YBF-09/15/22/30/40/50/60/70.
For all other models ignore the instructions
under c) and follow the instructions made
under d)
d) Remove worm (50) and washer thrust
(51) from balancer.
e) Remove dial gauge (31) by opening
screw (32). Not all models are equipped
with a dial gauge.
f) Remove grub screws (13) and locking-
bolts (49).
g) Open the screws (29) and remove body
cover (48). Take out spring assembly
(18), drum pulley (33) and center shaft
(14) from body casing.
h) Press out the center shaft (14) from
pulley (33).
i) Open screw (22) and carefully remove
spring casing (18) from pulley (33).
ASSEMBLY
a) Fit spring assembly (18) to pulley (33) by
screw (22) and spring washer (23).
b) Fit center shaft (14) along with worm
wheel (16) into the pulley (33) and spring
assembly (18).
c) Fit locking-bolts (49) and secure them
with grub screws (13).
d) Place the pulley (33) into body casing (1),
along with assembled parts.
e) Fit cover (48) onto body (1) with bolt (29)
and spring washer (30).
f) Fit wire rope assembly (34) onto pulley
(33) with grub screw (47).
g) Fit worm shaft (50) with washer (51) onto
body (1) and turn clockwise to wind the
rope assembly (34) over pulley (33).
h) Attach a weight, which
confirmed as the weight within the
capacity range, to bottom hook (42).
i) Fit dial gauge (31) with reference to load.
j) Increase the tension of the spring and set
it at middle/required range.
k) Fit bodyliner (52) with screw (53).
REPLACEMENT OF THE WIRE ROPE
Without disassembly
For the following models the wire rope can be
changed without disassembly.
YBF-09/15/22/30/40/50/60/70
The procedure for the replacement of the wire
rope of the above models is as follows:
Attention! Never remove the suspended tool
/ device before checking the pulley is locked
securely. If the pulley is not locked securely,
the pulley lock could be released allowing the
8
wire rope to snap back or the pulley could
rotate suddenly and possibly cause injury.
a) Lower the load/device while extending
wire rope to the maximum cable travel.
b) Position
screwed on the pulley (33) at the casing
opening by moving the load/device up
and down (see Fig. 6, Pos. 12).
c) Lock the drum with the manual drum
lockmechanism. Pull the stopper (11) and
turn it clockwise (30°) to place it in the
lower slot at lock-position (Fig. 6/Fig. 8).
Move the
downward to check pulley is locked
securely.
d) Remove the load/device from bottom
hook.
e) Remove grub screw (47) and remove old
wire rope from pulley.
f) Insert a new wire rope into the balancer
and pass it through pulley until it reaches
the casing opening (see Fig. 6, Pos. 12).
g) Attach the end of wire rope to pulley and
fasten with grub screw (47).
h) Attach the load to bottom hook and
release the drum-lock mechanism (see
Fig. 8).
REPLACEMENT OF THE WIRE ROPE
With disassembly
For the following models the wire rope can be
changed only with disassembly.
YBF-85/100/09L/15L/22L/30L/40L/
50L/60L/70L
The procedure for the replacement of the wire
rope of the above models is as follows:
a) Pull out the complete wire rope (34) and
lock the drum with the manual drum-lock
mechanism. Pull the stopper (11) and
turn it clockwise (30°) to place it in the
lower slot at lockposition (Fig. 6/Fig. 8).
b) Remove the load/device from the bottom
hook (42). Release all spring tension by
turning worm (50) counter clockwise.
c) Remove worm (50) and washer thrust
(51) from balancer.
d) Remove dial gauge (31) by opening
screw (32). Not all models are equipped
with a dial gauge.
e) Remove grub screws (13) and locking-
bolts (49).
f) Open the screws (29) and remove body
has been cover (48). Take out spring assembly
(18), drum pulley (33) and center shaft
(14) from the body casing.
g) Remove grub screw (47) and remove old
wire rope from pulley.
h) Insert a new wire rope into the balancer
and attach the end of wire rope to pulley
and fasten it with grub screw (47).
i) After fitting the new wire-rope, follow the
instructions
„ASSEMBLY".
TROUBLE SHOOTING
If the wire rope can not be pulled out or
retracted, the reasons might be:
1. The manual drum lock is engaged (Fig. 8).
- To release the manual drum-lock pull
stopper (12) out and turn it anti-clockwise
(30°) to place it in the upper slot at release
position (see Fig. 6/Fig. 8).
grub screw (47) which
load/device upward and
according to point
2. Safety-lock pin (25) is engaged, because
the spring tension is set below the minimum
capacity.
a) Move the suspended load/device upward
is and downward by hand.
- The load / device can be moved about 70
to 140 mm. If the load/device rises after
being lowered and then released, turn
worm (50) counter-clockwise until the
load/device starts dropping down. If the
load/devicedrops down after being lifted
and then released, turn worm clockwise
until the load/device starts rising.
b) Loosen set grub screws (14) and remove
all locking-bolts (48) while one person
holding the load/device by hand.
c) Remove the load/device from bottom
hook (42) when wire rope is fully
retracted into drum. Check the mass
(weight) of the removed load/device is
within the capacity range of the balancer.
d) Attach a weight,
confirmed as the weight within the
capacity range to bottom hook (42) and
adjust the spring tension.
e) Move the load/device
downward so that safety-lock pin (25)
appears at the inspection hole in the body
cover (48) (see Fig. 6/pos. 6).
f) Check safety-lock pin (25) does not
project out from the surface of nut (27). If
it‟s protruding, lightly tap the top of the
safety pin with a bar having 6 mm dia.
g) If the safety pin does not return, it has
burrs or the spring (20) is broken.
h) Remove nut (27) carefully from spring
casing (26). Spring (20) will pop out when
nut (27) is removed, therefore, be careful
not to lose it.
i) Remove safety-lock pin (25) and check
for burrs. In some cases, it may be
necessary to replace the safety pin.
j) Check the hole if the spiral spring (20) is
broken. If yes, proceed with chapter
„SPRING REPL
DISASSEMBLY".
k) Reassemble safety-lock pin (25) so that
the surface of nut (27) is even with casing
(21).
l) Preventing nut (27) from loosening, make
a punch mark at 2 points on the thread
with a punch.
INSPECTION / MAINTENANCE
Inspections should be carried out by a
competent person prior to initial operation.
The accident prevention act is valid for the
respective country where the product is used.
And also the commonly accepted regulations
for safe and professional work must be
adhered too.
The inspections are mainly visual and
functional and shall
components of the unit are in perfect
condition and do not show signs of damage,
wear, corrosion or other irregularities. All
safety devices are to be checked for
completeness and effectiveness.
Repairs may only be carried out by a
specialist workshop that uses original
Yale spare parts. The inspections have to
be initiated by the operating company.
which has been
upward or
ACEMENT AND
establish that the