TEST 145HS775 RAMP CONTROL VALVE (AVIM)
Prepare valve to perform functional tests as
Connect two pressure gages (0 to 4500
psig), a hand valve, flowmeter, and system
connections, to ramp control valve as shown.
Move ramp control valve handle (16) into
position 3 (up).
Slowly increase pressure to ramp control
valve, while simultaneously adjusting hand
valve untill system pressure is 3350 psig
(gage No. 1) and flow from ramp control
valve is 1.5 to 1.7 gpm (gage No. 2).
Move ramp control valve handle (16) from
position 3 (up) to position 2 (stop).
Make sure PWR switch (22) on ramp control
valve test set (21) (APP E-317), is set to OFF,
both solenoids de-energized.
From position 2 (stop), make five cycles of the
ramp control valve (2). Each cycle shall consist
of manualy moving ramp control valve handle
(16) from position 2 (stop) to position 1 (down),
to position 2 (stop), to position 3 (up), and back
to position 2 (stop). There shall be no apparent
binding or malfunction of ramp control valve.