Functions; Pump - WAGNER Cobra 40-10 Operating Manual

EDITION 01/2012
OPERATING MANUAL
4.4

FUNCTIONS

4.4.1

PUMP

Cobra 40-10
1
4
6
7
13
8
Cobra 40-25
1
4
6
3
13
7
8
General
The double diaphragm pump is driven with compressed air. This compressed air moves up
and down the air piston in the air motor (4) and thus also the piston rod in the pressure
stage (9).
At the end of each stroke the compressed air is redirected by a change over valve and the
control piston. The up- and down stroke of the 2 diaphragms within the colour stage is
raised by hydraulic oil, which is moved by the piston in the pressure stage.
At each piston stroke working material will be sucked in and delivered to the gun at the
same time.
Air motor (4)
The air motor with its pneumatic reverse (1) does not require pneumatic oil. The com-
pressed air is fed to the motor over the air regulator (2) and the ball valve (3).
The air motor is fi tted with a safety valve. The safety valve has been set and sealed at the
factory. With pressures over and above the permissible operating pressure the valve, which
is held with a spring, automatically opens and releases the excess pressure.
PART NUMBER DOC322851
2
5
3
9
10
14
B_01204
16
5
2
9
10
14
17
B_02945
1 Control housing with integrated
silencer
2 Air regulator
3 Ball valve
4 Air motor
11
5 Compressed air connection
12
15 6 Mounting fl ange
7 Return valve
8 Material outlet
9 Material pump
10 Material inlet
11 Earthing connection
12 Shuttering pressure stage
13 Return fi tting
14 Pusher for inlet valve
15 Air discharge opening
11
16 Safety valve
12
17 Fixing High pressure fi lter
15
(Accessories)
Cobra.
18