Hydra-Flex Aqua-Lab MD Operating Manual - Manual (Page 13)

Operating Manual
© Hydra-Flex Inc 2011 - 13 -
Valve Issues
Problem Potential Causes Solutions
Valve won’t open
Air pressure too low Ensure primary air regulator reading at least 60 psi,
turn up to 80-90psi if possible and check again
Internal valve o-ring jammed / twisted Remove valve from manifold, Carefully remove top
of valve
(caution – under high spring pressure)
push white piston up with small allen wrench from
opposite end and check o-ring condition. Replace
and lubricate if needed.
Valve leaks air or
water out top
Internal o-ring seal damaged / worn Remove valve from manifold, Carefully remove top
of valve
(caution – under high spring pressure)
push white piston up with small screwdriver from
opposite end and check o-ring condition. Replace
with 018 Viton O-ring and lubricate with Dow 111
valve lube.
Valve remains open
after signal is off
Manifold pressure is above 230 psi Reduce pressure to manifold to 200 psi operating
pressure