Prodigy HDLV Generation II Pump, Pump Manifold, and Circuit Board
34
Part 1081195-11
E
2018
Nordson Corporation
Figure 27 Tubing Connection
B
−
Suction Check
Low vacuum reading: less than 8 in. Hg in one or
both sides of the pump
The problem is not in the pump or control manifold.
1. Remove the pump and replace it with a
functioning pump.
2. Connect the vacuum gauge to the pump
suction fitting.
3. Trigger the spray gun and observe the
vacuum gauge.
S
If the problem disappears, the original pump
was bad. See
Pump is bad, requires repair
in the
Troubleshooting
table.
S
If the problem remains, the pump control
manifold is bad. See
Pump is bad, requires
repair
in the
Troubleshooting
table.
C
−
Bubble Test for Color-on-Demand
(COD) System
1. If the D2 pump valve has a clear body,
check for powder inside the body. If powder
is visible, disassemble the dump valve and
replace the pinch valve. If no powder is
2. Disconnect the delivery tubing from the
COD manifold outlet and install a new
length of delivery tubing from the manifold
outlet to a container of water.
3. Turn the COD controller test mode on by
toggling the test mode button. The test
mode button pressurizes all the air lines to
the COD manifold pinch valves. If any of
the pinch valves are leaking, bubbles will
appear in the water.
4. If bubbles appear, kink the blue D2 air
tubing. If the bubbles stop, the D2 pinch
valve is leaking. If the bubbles continue,
kink the rest of the pinch valve air tubes,
starting with D1, until the leaking pinch
valve is found. Replace all the pinch valves
in the manifold with the leaking valve, since
it is likely that the other valves are also
close to failure. If no bubbles appear, check
the short pieces of tubing connecting the
manifolds and D2 pump valve and replace
any that are worn out.
