Empty and Flush Entire System
56 3A2776K
b. Remove the platen from the A side feed pump
by loosening the two setscrews and the air tube.
c. Place a pail of solvent under the feed pump
then slowly insert feed pump into the pail. The
feed pump should rest on the bottom of the pail.
d. Slide the air motor slider valve (DF) to ON.
Adjust the air regulator (DE) so the feed pump
runs very slowly.
e. Continue adding solvent to tank until enough
solvent is in the tank to expel the remaining
material from the hose bundle material line.
8. Salvage the A material from the hose bundle
material line then flush the hose bundle material
line:
a. Press . Slowly turn metering pump air
regulator (CD) clockwise to increase air
pressure until metering pump A starts. Continue
until the material appears to be thinner, which is
a sign that the solvent is mixing with the
material, then press to stop the metering
pump. Back out the air pressure regulator.
b. Cover the material container and store for later
use.
c. Move the A material line to a waste container.
d. Press . Slowly turn metering pump air
regulator (CD) clockwise to increase air
pressure until metering pump A starts. Continue
until clean solvent is dispensed, then press
to stop the metering pump. Back out the
air pressure regulator.
e. Reconnect hose bundle material line to the mix
manifold.
f. Disengage trigger lock then trigger gun into the
waste container and press . Slowly turn
metering pump air regulator (CD) clockwise to
increase air pressure until metering pump A
starts. Continue until clean solvent is
dispensed, then press to stop the metering
pump. Back out the air pressure regulator.
9. Verify tank air pressure is still relieved, then purge
the material from the tank return line.
a. Open the circulation valves.
b. Disconnect the tank return line from side of the
tank.
c. Place the return line in a waste container.
d. Press . Slowly turn metering pump air
regulator (CD) clockwise to increase air
pressure until metering pump A starts. Continue
until clean solvent is dispensed, then press
to stop the metering pump. Back out the
air pressure regulator.
10. Repeat this entire procedure for the B material side.
Leave solvent in the lines to prevent scale buildup
which could flake off.
11. Adjust Packing Nuts, see page 60.
FIG. 42: Feed Pump Air Controls
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