Troubleshooting - Yale YBF-01 Originalbetriebsanleitung

tension. To adjust the spring tension, turn
the worm on the rear side of the balancer
(Fig. 6/Fig. 8) with a wrench etc. Turn clock-
wise for increasing the spring tension, turn
counter-clockwise for reducing the spring-ten-
sion. The gauge on the front side (see Fig.
6/Fig. 9) shows the approximate spring-
tension.
Attention! Over adjustment could cause dam-
ages to the balancer body, the wire-rope and
also to the spring-assembly.
- - - - - To remove the attached load from the
bottom hook, pull out the wire rope (34)
completely and lock the drum with the
manual-drum-lock.
Pull the stopper (11) and turn it clockwise
(30°) to place it in the lower slot at the lock-
position (Fig. 6/Fig. 8).
Attention! Move the suspended load
upward and downward until the stopper
enters the slot in the pulley and the pulley
becomes locked. Move the load again to check
the drum is locked securely.
SPRING REPLACEMENT AND
DISASSEMBLY (see Fig. 10)
Attention! Never remove the spring from the
spring case. If removed, the spring will expand
explosively and cause personal injury. Replace
the spring assembly only as a complete unit.
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 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.
6
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 assem-
bly (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 has been 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 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 grub screw (47) which is 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 lock-
mechanism. 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 load/device upward and downward to
check pulley is locked securely.
d) Remove the load/device from bottom hook.
e) Remove the 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
cover (48). Take out spring assembly (18),
drum pulley (33) and center shaft (14) from
the body casing.
g) Remove the 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 the grub screw (47).
After fitting the new wire-rope, follow the
instructions according to point „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 stop-
per (11) out and turn it anti-clockwise (30°)
to place it in the upper slot at release posi-
tion (see Fig. 6/Fig. 8).
2. Safety-lock pin (24) is engaged, because
the spring tension is set below the mini-
mum capacity.
a) Move the suspended load/device upward
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/device