Operating manual High-pressure double diaphragm pumps Cobra 40-10; Cobra 40-25
7 Operation
38
Order number 2340851 | Edition 05/2022
B_04301
2
3
1
Pos Positions of the ball valve
1
Open:
working position.
2
Closed:
The air motor may still be under pressure.
3
Vent:
Operating pressure in the air motor is vented (control pressure is still
present).
1. Carry out a visual inspection: Personal protective equipment, grounding and all devices
ready for use.
2. Secure spray gun and insert nozzle into the spray gun.
3. Slowly open the ball valve.
4. Set the required working pressure on the pressure regulator.
5. Optimize spray pattern in accordance with the spray gun's operating manual.
6. Start work process.
Note:
Depending on the function, the pump may continue running at 1 - 6 DH/min. after the
spray gun is closed.
7.4 PRESSURE RELIEF / WORK INTERRUPTION
The pressure must always be relieved:
– after the spraying tasks are finished,
– before servicing or repairing the system,
– before carrying out cleaning tasks on the system,
– before moving the system to another location,
– before something needs to be checked on the system,
– before the nozzle or the filter is removed from the spray gun.
Process for relieving pressure
1. Close the spray gun.
2. Close the ball valve and vent the air motor.
3. Release the system of pressure by opening the spray gun.
ð
Attention: If a blocked nozzle is preventing relief, first carry out the additional steps
4 and 5, then clean the nozzle.
4. Close and secure the spray gun.
5. Open and close the relief valve slowly to completely depressurize the system.
Note:
Control air pressure is still present.
