Maintenance Recommendations - haacon 1624.1,5 Betriebsanleitung

9. MAINTeNANCe reCoMMeNDATIoNs

The operator determines the intervals themselves based on frequency
of use and the operating conditions.
– Regular cleaning, no steam jets!
– General overhaul by the manufacturer after 10 years at the latest.
ATTeNTIoN!
Inspection, maintenance and repair works only on an unloaded
hoist. Work on brakes and locks only by qualified specialist
personnel.
Maintenance and inspection work
Visual and functional tests
Brake function under load
Lubrication (grease nipple)
Check rack and drive pinion for wear, grease and replace
if necessary
Check and wait for the lock (see below)
Check type plate for legibility
Professional inspection
Check gear parts, grease and replace if necessary
Lubricant recommendations (rack, gear):
Multi-purpose grease per DIN 51502 K3K-20.
Check and maintenance instructions lock
» Standard safety crank
If sluggishness occurs during lowering, pour a
few drops of oil into the gap in the crank cam.
1- 3
Safety cranks with a gap aperture >30° should
be replaced. Repair must be carried out by
only by the manufacturer.
30° max
» Optional pulling / pushing version with removable crank (double
acting locking, brake head)
ATTeNTIoN!
Only dismantle the brake head in an unloaded state.
Only to be checked and serviced by Technical experts.
Maintenance and service work
Check braking torque (–> following description)
Check all parts of the brake head for wear, relu-
bricate and if necessary replace defective parts.
recommended lubricants (brake head):
DIVINOL grease Fibrous 2 acc. to DIN 51502 KP2K-20
replacement of brake head (–> spare part drawing)
– Relieve the tension on the winch (secure any loads to be lifted in
an appropriate manner) or disassemble the winch and lay it down
horizontally.
– Knock out the clamping sleeve.
– Detach the receptacle.
– Loosen the nut (SW 24).
– Dismount the brake head.
brake head
Checking the braking torque
– Remove the brake head (see above) with the brake head underside
underside facing up. The cast iron housing must not turn.
All moving parts of the brake head must still be able to move
after it is attached.
– Measure the torque on the square output square drive with a torque
gauge.
Perform one clockwise measurement and one anticlockwise measu-
rement.
– The torque of a new brake head is >> 90 Nm.
Do not exceed a braking torque of 90 Nm.
Replace the brake head!
094002_l_gb_zstwin_s haacon hebetechnik gmbh – Phone +49 (0) 9375 - 84-0 – Fax +49 (0) 9375 - 84-66
Intervals
Before
every use
Annually
2-5 years
ATTeNTIoN! Only disassemble the
crank, ratchet brace and locking pawl
when the equipment bears no load!
Do not oil or grease the brake pads!
service intervals
Annually
clamping pin
hexagon nut
receiver
Assemble the brake head in the reverse sequence. When doing
so, pay attention to the following:
– The bolt must dip in the break heads' slot hole (Torque support).
– Tighten hex nut with 90 Nm.
» Optional pulling / pushing version with fixed crank (double acting
locking, crank)
ATTeNTIoN!
Only dismantle the brake head in an unloaded state.
When the load is lowered, the housing of the lock heats up! If,
while working with excessive weight, the permissible operating
temperature (-20/+90°C) is exceeded, stop using the crank and
continue only when the housing has cooled down sufficiently.
Check daily, before every use
– The crank must be able to move easily back and forth in
small range.
– The square shaft must not move when the crank arm
moves!
– The range of movement must
– be at least 5° (3 cm on the crank handle).
– not exeed 20° (9 cm on the crank handle).
– If the crank arm cannot move easily or
– if the movement range becomes larger or smaller
than indicated, the brake has been damaged or
is inoperable.
The winch must not to be used under any
circumstances and should be checked
immediately by a technical expert.
An immediate ispection by a professional should be performed if:
– the crank arm bounces when the load is beeing lowered.
– the crank arm blocks during the rotation of a small load.
– the crank squeaks.
Lubrication
The crank is initially lubricated by the manufacturer with a long-term lu-
bricant. The lubricant durability depends on the operating environment
(weather conditions) and usage intensity. In most cases it is sufficient to
lubricate the safety crank during the scheduled inspection intervals.
Lubrication with the appropriate oil can be performed by the operator.
By doing this, deposits and contamination, as well as old lubricant, will
be dissolved and washed out, and the rust protection refreshed.
Even a single lubrication with oil will destroy the longterm effect
of the original lubricant. Once it is done, oil lubricant has to be
repeated regularly in short intervals, especially if under the
influence of bad weather or aggressive substances. Furthemo-
re, oil lubrication decreases the ease of operation while working
with heavy loads.
Lubrication with fine mechanics oil
Spray oil into
lubrication holes
– Remove all weight from the crank.
– Put the crank in the vertical position up.
– Spray the oil generously into the 2 lubrication holes and into the nar-
row gap between the crank and the security ring.
– Divide the oil evenly by crank arm rotation in both directions. Repeat.
– Use only lubricants mentioned.
min. 5°
max.20°
Spray oil into the gaps
of the crank arm seat
2