GB
3.2 Connection to the pump tube
The motor is mounted on the pump tube. The upper
coupling (Fig. 4 – Pos. 1) on the motor engaging in the
coupling (Fig. 4 – Pos. 2) of the pump tube. The motor
and pump tube are then firmly connected by means of
the handwheel (right-hand thread).
3.3 Checking the explosion protection
The following points must be checked before pumping
flammable liquids and before starting up the pump in
explosion hazard areas (Fig. 5):
1. Pump motor explosion proof?
2. Pump tube explosion proof?
3. Equipotential bonding connected?
4. Conductive hoses/hose connectors used?
4. Operation
When working in explosion hazard area, operate motor
only under control!
4.1 Starting the compressed air motor MD-1
For starting and stopping the compressed air motor, a
stop valve should always be installed in the compressed
air line or at the motor. Use a ball valve (Lutz accessory)
for manual control. Thus, the motor speed can be infini-
tely varied by turning the tap.
4.2 Starting the compressed air motor MD-2
The motor is started by lifting the trigger (Fig. 6, Pos.1).
The speed is determined by means of the trigger posi-
tion between neutral position and stop. The trigger can
be secured in the final stopping position by pushing the
trigger slide (Fig. 6, Pos. 2) over the trigger.
4.3 Starting the compressed air motor MD-3
The motor is started by depressing the button (Fig. 7).
5. Repairs
If the compressed air motor fails to reach its rated out-
put, check the following possible causes:
a) Is sufficient air pressure available (6 bar / 85 psi)?
b) Is the air pressure constant or does it fluctuate?
c) Is the air filter at the maintenance unit clean?
d) Does the oiler work properly?
e) Are there any leaks between the maintenance unit
and compressed air motor?
f) Is the air outlet muffler blocked so that the air can
-
not properly escape from the motor?
If none of the above defects is detected, the compressed
air motor must be repaired.
Repairs may only be carried out by the manufacturer or
authorized repair shops. Only use genuine Lutz spare
parts.
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