LB 16-40
2
OLEO INTERNATIONAL
INDICATION OF USE
Oleo buffers are supplied with a standard finish for dry
conditions.The standard finish is not suitable for wet or
corrosive conditions such as mineshafts etc.
Environmental temperature acceptable conditions: -15°C
to 70°C
Note: for special conditions outside the above consult Oleo
International.
Buffers are to be fitted vertically parallel to guide rail
+/- 5mm. For non vertical applications please consult Oleo
International.
PREPARATION FOR INSTALLATION
The Oleo elevator buffer is supplied with a sealed gas
precharge; the plunger is held in the fully compressed
condition during transportation by means of a transit eye
bolt. The transport eye bolt and spacer must be removed
but the adaptor must remain in the delivered position, the
plunger must be allowed to extend fully. The following is
the recommended removal procedure.
Before fitting buffer isolate the lift car while working
underneath.
Before the buffer is released ensure that there is sufficient
clearance to allow full extension. Do not stand over the
buffer.
Use appropriate lifting equipment for designated weight of
buffer, do not lift the buffer using the plunger; use the lifting
eye bolt.
Weight of buffer is shown in table 1.
Undo and discard the eye bolt and spacer but leaving the
adaptor in the delivered position as per diagram on page 1.
The units will require filling with oil to the specified level as
per the oil filling procedure.
At installation the correct oil level of all buffers must be
checked.
Make electrical connections to the limit switch.
NOTE: For base fixing-minimum rawl bolt depth in floor
should be 130mm bolt shank diameter 16mm.
The maximum overall height should be checked against
table 1 and should be 0/-9.5mm of the figure stated.
OIL FILLING PROCEDURE
The filling can be either before or after installation of the
buffer but the correct level must only be checked when
extended. The buffer must be vertical when filled.
The correct oil specification is listed on the data label:
a) Securely mount the buffer in the shaft bottom.
b) Remove oil filler plug and dipstick, as per instructions on
page 10.
c) Fill the unit with oil if necessary, the approximate volume
is stated in table 1. The filling location is as per the
instructions on page 10.
d) Take care when handling the oils. Observe the oil
manufacturers recommendations.
e) Allow to stand for 30 minutes, then check oil level with
dipstick when buffer is fully extended and top up as
necessary. Leave to stand for a further 20 minutes,
recheck and top up again if required. The oil must be at
the level indicated on the dipstick.
f) If possible compress the plunger, then release - observing
that full extension is smoothly attained.
g) Refit oil/filler/dipstick.
MAINTENANCE
Inspection need be no more frequent than the local
statutory checks on elevator installations or following an
impact. At the time, it is only necessary to simply check
that the oil level is correct and that the overall height
remains to the correct measurement. After impact check
buffer visually for any damage. Check gas spring by making
sure the buffer has fully re-extended.
Remove and clean away any dirt and debris around the
plunger and switch. Check the alignment of the striker, this
should be parallel with the plunger and switch, in a vertical
position.
NOTE: If the buffer has not returned to the fully extended
position (determined by measuring overall height) contact
the buffer supplier.
OIL SPECIFICATION
The oil must conform to the specification on the buffer data
plate - ISOVG68 - SG .88/.90 at 15°C - hydraulic.
Pour Point -18°C or lower.
Viscosity index 75 or higher.
