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B_04237
Cobra 40-10
OPERATING MANUAL
VERSION 10/2013
ORDER NUMBER DOC 2303675
General information
The double diaphragm pump is driven with compressed air. This compressed air moves the air piston in the air
motor (4), and consequently the piston rod in the pressure stage (9), up and down. At the end of each stroke
the compressed air is redirected by a reversing valve and the control piston. The up-and-down movement of
the 2 diaphragms within the uid section is produced by hydraulic oil, which is moved by the piston in the
pressure stage. With every stroke of the piston rod, working material is sucked in and delivered to the spray
gun at the same time.
Air motor (4)
The air motor with its pneumatic reverse (1) does not require pneumatic oil.
The compressed air is fed to the motor via the air pressure regulator (2) and the ball valve (3).
The air motor is tted with a safety valve. The safety valve has been set and sealed at the factory. In case
of pressures over and above the permissible operating pressure, the valve, which is held with a spring,
automatically opens and releases the excess pressure.
5.3 FUNCTION
1 Control housing with integrated silencer
2 Air pressure regulator
3 Ball valve
4 Air motor
5 Compressed air inlet
6 Mounting ange
7 Relief valve
8 Product outlet
9 Fluid section
10 Product inlet
11 Grounding connection
12 Pressure stage casing
13 Return socket
14 Valve depressor
15 Exhaust air cap
5.3.1 PUMP