April 8, 2011
HN FAQ Memo, Version 3.0
Page 13 of 108
because you only look at a sampler at a time.
Delay = time each valve is open at a time, while routine run in ms. Recommended 1000 - 2000ms, so there
is plenty of time to see each valve open / close.
When you press OK, the test will start until you press Enter again, or test times out.
the test makes the valves alternately opened and closed again. This can be from seen on the 5 LEDs on the
circuit board
If you suspect a particular valve, and find it hard to see if it closes / opens as expected, then you can
connect a VPR 100 to the stud and see if vacuum rise / fall as expected when it operates.
If there is a vacuum all the time, there is a big change for the O-ring on the solenoid valve is leaking /
missing, or magnet missing.
REMEMBER THAT AFTER THE USE OF THE SAMPLER TEST RUTINE
YOU SHOULD RESTART THE ENTIRE SYSTEM BEFORE YOU LEAVE THE FARM.
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