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Troubleshooting the on/off valve
Where used
On/off valve …………… 014553-1 · 014660-2 · 060647-1
Summary
There are two main failure modes for the on/off valve: leaking water (most common) or an on/off
valve that does not open or close correctly. Pay special attention to the utility connections and air
lines—the high-pressure water supply could be partially blocked, or there could be bends, holes, or
loose connections in the air lines.
After you troubleshoot the on/off valve, it could seem like you only have to replace one or two parts
from the seal kit. However, all seal kit components have similar expected life times.
If one
component failed, the others are also likely to fail very soon!
We recommend that you install all
seal kit components at the same time to reduce maintenance time and machine downtime.
Water leaks past the high-pressure assembly (top of high-pressure seal)
Drips every few cycles
This indicates seal and backup ring wear. It’s OK to continue to operate the machine, but if the leak
causes problems, install the seal kit now. (Part #014988-1)
Steady trickle
This indicates moderate seal and backup ring wear. Install the seal kit next time the machine is
down.
Shooting stream
This indicates a failed O-ring or severe seal and backup ring wear. Install the seal kit immediately!
Water leaks from the tubing/valve body (high-pressure inlet)
Streaming
This indicates the ¼ in. gland is not tight. Turn off the high-pressure pump, and then tighten the ¼ in.
gland.
Shooting stream
This indicates there is a crack in the high-pressure port of the valve body or tubing. You must
replace the valve body or the tubing.
© 2021 Flow International Corp.
Retrieved from Flow KB on April 19, 2021 PST
On/off valve repair
Содержание MACH 300
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