GB
General safety information
The operator must read and follow the operating
instructions before starting the motor.
1. The motor may only be operated in an upright posi-
tion.
2. Ensure that the motor is switched off before con-
necting the compressed air.
3. Ensure that all connections and fittings are properly
tightened.
4. Do not operate motor without pump tube.
5. The motor must not be immersed in the liquid being
pumped.
6. Depending on the operating conditions the sound
pressure level may exceed 85 dB(A).
If this value is exceeded ear protection must be
worn.
7. Repairs may only be carried out by the manufactur-
er.
The classification of flammable liquids is made accor-
ding to directive 67/548/EEC. When pumping flam-
mable liquids the operational safety regulation and the
following points have to be observed:
1. Compressed air motors are non-electrical operating
appliances not requiring official approval when used
in zone 1.
2. The compressed air motors MD1, MD2, and MD3
correspond to the directive 94/9/EC (group II, cate-
gory 2 for gases).
3. The motors are therefore suitable for driving Lutz
drum- and container pumps of category 1/2.
4. Application restrictions are depending on the re-
spective pump tube (see operating instructions).
5. Only authorized for mobile use.
6. The motor may only be operated with an explosion
proof pump tube.
7. Connect equipotential bonding.
8. Use conductive pressure hoses only.
9. The pump motor must remain outside the drum or
container.
10. Do not exceed operating pressure.
11. Motor and pump operation must be controlled.
12. Connection of motor and pump tube only when mo-
tor does not rotate.
13. Do not operate the motor with flammable gases.
14. Prescribed period for maintenance: Grooved ball
bearing and vane both have to be exchanged after
2.000 operating hours at latest.
The national accident prevention regulations must be
observed without fail.
1. General
A compressed air driven drum and container pump
comprises motor and pump tube to suit the particular
application. Application of the compressed air motors
MD-1, MD-2 and MD-3 in explosive hazard areas or for
pumping flammable liquids is only allowed in combi-
nation with a category 1/2 approved pump tube. This
applies for the Lutz pump tube from stainless steel (SS
1.4571) and Hastelloy C (HC).
1.1 Scope of supply
Check that the consignment is complete as ordered.
2. Motor types
Compressed air motors are non-electrical operating
appliances not requiring official approval when used in
zone 1.
The compressed air motors MD-1 (Fig. 1) and MD-2
(Fig. 2) are built in line with EN 50014 (for electrical
operating appliances) and may be used for pumping
flammable liquids which belong to explosion groups
IIA and IIB and temperature classes T1 to T4, from mo-
vable containers
1
.
In addition, the compressed air motor MD-3 (Fig. 3)
has a flame-proof enclosure and in line with EN 50014,
corresponds to the certification Ex d IIC T6. This motor,
too, may only be used for pumping flammable liquids
from movable containers.
Type
MD-1 MD-2 MD-3
Power output 400 W
Max. Operating pressure 6 bar
Air consumption
2)
0,88 Nm³/min
Explosion group
1)
IIA, IIB IIA, IIB, IIC
Temperature class
1)
T4 T6
Sound pressure level
3)
85 dB(A) 78 dB(A)
Weight 1.1 kg 1.5 kg 2.1 kg
Order No.
0004-087 0004-088 0004-090
1) Drum pumps are approved for explosion groups IIA and IIB
and temperature class T4. As a result hereof, the combination
motor/pump tube is also approved only for matters (liquid to be
pumped and/or environment) of this classification.
2) Standard conditions
3) Measured at 6 bar operating pressure with fully throttled pump
tube
Vibrations are transmitted to the operator as he holds
the motor in his hand during operation. The upper limbs
are exposed to an acceleration of less than 2.5 m/s².
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