22
Changing the oil
Oil drainage
Unscrew the oil draining screw.
It is easier to drain the oil if the oil filling hole screw is
also removed.
Hold the mixer over a vessel and allow the oil to run out.
Put the oil casing screw back.
The oil casing may be
under pressure.
Hold a rag over the oil
plug to prevent splatter.
Lay the mixer over two supports or suspend the mixer
horizontally from an overhead crane.
Keep a container underneath the screw to catch the
oil when the screw is removed.
Oil refill
Recommended oil quantities for mixers positioned at
0° to ± 20° from the horizontal axis:
4630, 4640 0.35 litres
4650, 4660 1.0 litres
4670, 4680 2.4 litres
If the mixer will be positioned –90° downwards the
recommended oil volume must be increased to:
4630, 4640 0.55 litres
4650, 4660 1.5 litres
4670, 4680 3.8 litres
Flange mounted mixer
If the mixer is equipped with external oil change, pipes
and couplings are connected between the oil casing
and the fixing plate.
The fixing plate is provided with five threaded holes
ISO G-3/8 for inspection and change of oil, cooling
water and seal flushing.
For easy handling, equip the oil inspection holes with
hydraulic couplings. Connect the male couplings to
Oil
in
and
Oil out.
Drain the oil into an oil vessel.
Connect an oil gun to
Oil out
hydraulic coupling. Pump
the oil until oil comes out from
Oil in
hydraulic cou-
pling. Disconnect the male couplings from
Oil out
and
Oil in.
Put back the oil plugs.
The machine is delivered from factory with a tasteless
and odourless paraffin oil suitable for raw or clean-
water applications.
This oil is authorized according to FDA 172.878, (FDA
= Food and Drug Administration authority in US).
We recommended that Mobil Whiterex or Shell Ondi-
na, with viscosity class ISO VG15 to 32, be used.
In media where paraffin oil is not required, a mineral
oil, i.e. compressor oil or hydraulic oil with (the same)
viscosity class VG15 to 32, should be used. Regular
motor oil, e.g. SAE 5(W) up to SAE 25(W) can also be
used.
Fill up with new oil in the oil filling hole, the mixer
should be in a horizontal position. Always replace the
O-rings (24) of the oil hole screws. Put the screws
back and tighten them. Tightening torque 10—20 Nm
(7.4—15 ft lb).
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