MLB 35-40
2
OLEO
豪乐奥
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
+/- 5 mm. 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
bolt/retainer. The transport retainer must be removed, and
the plunger 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.
Weight of buffer is shown in table 1.
Undo and discard transportation screw as per diagram on
Page 1.
The units will require filling with oil to the specified level.
At installation the correct oil level of all buffers must be
checked.
Before operation ensure the striker is vertically aligned
to +/- 0.5 mm.
Make electrical connections to the limit switch.
NOTE: For base fixing-minimum rawl bolt depth in floor
should be 130 mm bolt shank diameter 16 mm.
The maximum overall height should be checked against
table 1 and should be 0/-9.5 mm of the figure
stated.
OIL FILLING PROCEDURE
The filling can be 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 dipstick and sealing plug. Fill buffer with oil to
a level between the maximum and minimum marks as
shown in Figure A.
c) Take care when handling the oils. Observe the oil
manufacturers recommendations.
d) To check oil level wipe any oil off dipstick rod. Push
dipstick back into the hole without screwing it in.
Remove dipstick out of the hole and inspect level.
e) After oil filling leave the buffer to stand on its base for
15 minutes, then recheck the oil level. This is to allow
the oil to settle and ensure an accurate reading is
taken. It may be necessary to repeat step d). until
desired oil level has been established.
f)
Important:
Do not overfill past the maximum
dipstick mark when oil level is established, replace and
tighten dipstick and sealing plug.
g) If possible compress the plunger, then release –
observing that full extension is smoothly attained.
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.
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.
