Hansen P4 Manuel D'entretien page 10

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T R A N S M I S S I O N S
On systems with filters and coolers, oil level must
be checked with lubrication and cooling system
filled with oil and after short test run.
The lubrication and cooling system, including the cooler, is automatically
utilized when the oil bath temperature rises above 60°C (140°F).
If oil filling is required to take place earlier, the air must be released from the
cooler whilst the pump is in operation.
The oil quantity mentioned on the nameplate of the gear unit is an approxi-
mate value given only for procurement purposes.
FIG. 5
- Single stage gear units
n
QHP.1
- Multi stage gear units
Type and position of the stickers : refer to certified drawing and gear unit
Dipstick Oil draining
Grease lubrication points
Grease lubrication point
for bearings
®
ENGLISH
QHP.1W
(1) see 6.8
Oil filling Ventilation
Grease lubrication point
for labyrinth seal
M 6.5. THE FIRST OIL FILLING
Fill units only after final installation, especially gear units with vertical
downwards shafts, to prevent oil splashing over drywell during handling.
Fill the gear unit exclusively through the oil filling open-
ing which is provided in the inspection cover for that
purpose. In that way, all bearings are lubricated with
fresh oil.
Note :
- Additional oil filling of the bearing housing.
4-stage horizontal gear units with right angle shafts
(QHR.4) and 3- and 4-stage vertical gear units with
right angle shafts (QVR.3 + QVR.4) require on initial
oil filling also an additional oil filling of the bearing
housing.
See special sticker on gear unit.
The additional oil quantity is mentioned on the
certified drawing and on the sticker.
- Oil filling of a gear unit with M1 or M3 motor base.
Units with horizontal shafts (QH ..) equipped with a motorbase M1 and
M3 must be filled on initial filling with a small quantity of oil through the
inspection cover located in the top face of the gear unit (see special sticker
on gear unit).
If easy access to the oil filler plug is prevented through lack of space
between the motor base and the gear unit upper face, the motor base
should be raised following removal of the belt.
For gear units with M1 motor base the normal oil filling plug is located at
the side of the output shaft, opposite the side where the dipstick is
located.
For gear units with M3 motor base the normal oil filling plug is located at
the side of the dipstick.
If the gear unit is filled with storage oil, it has to be drained and it may in
some instances be necessary to rinse the gear unit with the selected oil before
starting up. Check with the oil supplier.
To improve the steadiness of the bearing life span, it is highly recommended
to use oil that has an initial oil cleanliness of -/15/12 (or better) according to
ISO 4406.
Refer to the oil supplier to obtain this oil quality.
6.6. GREASE SELECTION
M
If the gear unit is equiped with parts that need grease lubrication, and unless
indicated otherwise on the gear unit's name plate or in the special technical
manual of the specific gear unit (if existing), the grease must be selected from
the table at page 48 of this service manual, listing mineral oils and greases
recommended by their respective brand name owners.
Use only high quality greases with consistency NLGI-Grade 3.
M
Greases with consistency NLGI-Grade 2 may be used for regreasable laby-
rinth type seals and grease lubricated lower bearing of the low speed shaft.
The lubricant suppliers are responsible for the selection and composition of
their products.
6.7. GREASE LUBRICATION POINTS
M
All greasing points for bearings which are not oil lubricated and for labyrinth
seals are equipped with nipples according to DIN 71412 and have been
filled before shipment.
The total number of nipples is indicated on the nameplate.
Some built-on backstops are grease lubricated.
For detailed information refer to appropriate leaflet supplied with this
manual.
6.8. OIL DRAINING
M (see fig. 5)
Drain the oil while unit is still warm. Be careful
while draining the hot oil, use an appropriate hot
oil recipient.
To facilitate oil draining, remove dipstick. Drain units having a large oil vol-
ume through drain plug. Use portable pump. With some executions a small
quantity of oil remains beneath the high speed bearings. This oil can be
drained by means of a second drain plug (1).
6.9. VENTILATION
M
(see fig. 5)
To prevent pressure build-up, the gear unit is provided with a breather which
is integrated in the dipstick or with a separate breather.
Take care and check regularly that this breather
does not become clogged.
For some applications, the dipstick with breather hole is replaced by one
without breather hole in combination with an anti-dust or anti-humidity
breather.
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(see fig. 5)
(see table page 48)
(see fig. 5)
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