11
0698-825 MD1xL / MD2xL - 06/2021
en
5. Operation
!
WARNING
Danger of rolling-up and pulling-in of objects!
►
Do not put any objects in the opening for the
coupling control (
→
Fig. 4).
►
Do not work on the motor with thin and loose-fit
-
ting gloves.
!
WARNING
Danger of injury due to uncontrolled restarting
of the motor!
►
The pump must not be left unattended while in
operation.
►
If the power supply fails, the motor must be
switched off.
5.1 Controlling compressed air
motor MD1xL
►
For switching-on/off the motor, insert a check
valve in the compressed air line (e.g. ball valve
from Lutz accessories).
5.2 Controlling compressed air
MD2xL
►
On:
Move switch from the off-position
(
→
Fig. 5, item 1) to the required speed
(
→
Fig. 5, item 2).
Off:
Turn back the switch to Off-position.
6. Maintenance and servicing
If the compressed air motor is missing the required
power, check the following points:
Fault
Cause
Remedy
Air pressure
not sufficient
(87 psi /
6 bar)
• Compressed
air line is
leaky
• Pressure
losses
• Seal or
replace the
compressed
air line
• Enlarge
the cross-
section of the
compressed
air line
Air pressure
fluctuating
• Compressed
air line is
leaky
• Compressed
air line,
muffler or air
filter blocked
• Error during
generation of
compressed
air
• Seal or
replace the
compressed
air line
• Clean com-
pressed air
line, muffler
or air filter
• Check air
compressor
Air filter on
maintenance
unit is dirty or
blocked
• Impurities in
compressed
air
• Cleaning the
air filter
Lack of oil in
the com-
pressed air
system
• Oiler impure
or damaged
• Clean, repair
or replace
oiler
Muffler
blocked
• Impurities in
compressed
air
• Dust in the
environment
• Clean muffler
If none of the above defects is detected, the com-
pressed air motor must be repaired.
