StediFlo
t
57:1 Pump
12
Part 1601882-01
E
2012 Nordson Corporation
Flushing
Before starting production, a new pump and spray system must be flushed
with a solvent or waterborne cleaning solution compatible with the coating
material you are using. This ensures that all oils and contaminants left
during the manufacturing and installation process are flushed out of the
system.
NOTE:
Turn off the fluid heater (If used) before flushing the system.
Requirements:
S
Flushing solvent or waterborne cleaning solution
S
Coating material
S
Grounded waste container
1. Place the suction strainer in the flushing material, or supply it through a
pressure feed system.
2. Place the waste container under the filter or circulation drain valve, then
open the valve.
3. Start the pump and adjust the input air pressure to 2 bar (30 psi).
4. Run the pump until flushing material flows from the filter drain valve,
then close it.
NOTE:
If using a circulating system, a drain valve should be connected
to the circulation valve. Place a ground waste container under this valve
and open it after closing the filter drain valve. When flushing material
flows from this valve, close it.
5. Ground the manual spray gun against the side of the waste container
and spray into the container for at least 1 minute. If using automatic
guns, turn them on and spray into the spray booth.
6. Shut off the spray gun.
7. Increase the air pressure to the maximum allowable (7 bar, 101 psi).
Check all system connections and seals: hoses, gun, heater, filter. If
leaks are present anywhere, stop the pump, relieve the fluid pressure,
and fix the leak.
8. Increase the air pressure to approximately 10% above the maximum
pressure. The pressure relief valve on the air motor should open. This
ensures that the valve works properly.
9. Adjust the air pressure so that when the spray gun is triggered the pump
runs very slowly. Remove the siphon strainer from the solvent, then
trigger the gun to flush the remaining solvent out of the system.
10. Stop the pump and shut off the pump air.
11. Open the drain valves to relieve the pressure and drain any remaining
solvent from the system.
Daily Operation
1. Check the solvent chamber level and fill if necessary.
2. Place the siphon strainer into a container of coating material, or supply
coating material to the pump through a pressure feed system.
