Oil; Oil Change - Grundfos SMD Installation And Operating Instructions Manual

8.4 Oil

8.4.1 Oil quality, gearbox or shaft seal housing
The gear oil quality and designation for mixers (SMD,
SMG) is according to DIN 51502, ISO VG 68. The
gear oil quality and designation for flowmakers (SFG)
is according to ISO VG 220.
8.4.2 Oil quantity
Type
SMD.09 - 18.xx
SMD.19 - 35.xx
SMG.09 - 45.xx
SMG.48 - 130.xx
SMG.120.78.H
SMG.140 - 185.xx
SFG.xx.130.xx
SFG.xx.180.xx
SFG.xx.230.xx
SFG.xx.260.xx
SFG.xx.150.H.xx
SMD, SMG and SFG models do not have
oil in the motor compartment.

8.5 Oil change

Proceed as follows:
1. Place the mixer or flowmaker in a horizontal
position, and put a pan underneath to collect oil.
CAUTION
Pressurised system
Minor or moderate personal injury
‐
As pressure may have built up in
the oil chamber, do not remove the
oil level screw until the pressure is
fully relieved.
2. Remove the screw (2 in fig. Position of the oil
drain and the oil filling screws on SMG and SFG).
3. Remove the oil drain screw (1), and let an oil
sample drain from the chamber into a glass.
Leave the oil in the glass for approximately 10
minutes, and check if it contains water. If the oil
contains water, replace the shaft seal.
Gearbox or shaft seal
housing
[l]
0.13
0.26
1.2
2.5
4.0
1.3
3.2
3.2
4.6
Dispose of used oil in accordance with
local regulations.
4. Clean and refit the oil drain screw (1).
5. Fill oil into the oil chamber through the filling hole
(2). For the oil quantity, see Oil quantity and for
the quality, see Oil quality, gearbox or shaft seal
housing.
6. Refit the screw (2).
Position of the oil drain and the oil filling screws on
SMG and SFG
Pos. Description
1 Oil drain screw
2 Filling hole
2
1
Position of the oil drain and the oil filling screws on
SMD
2
1
3
35