Flow HYPLEX - Page 39

© Flow International Corporation M-416 | 39
CHAPTER 3
Maintenance & Troubleshooting
My UHP component life is excessively short.
CAUTION: It is expected that you have followed all recommended service and maintenance procedures. All parts
of kits should be installed at the same time - do not replace components/positions individually.
It is expected that all utility and installation requirements have been met.
Common causes for prematurely short component life include:
•
Poor inlet water quality
•
Low inlet water pressure
•
Improperly plumbed PCV drain line
•
Improperly loaded tie rod
UHP seal Worn or damaged UHP plungers. Install a Minor or Major Maintenance Kit.
Worn or damaged check valve assembly.
Worn or damaged seal carrier.
Inlet water temperature too high or too low. Call Flow Technical Service.
Incorrect seal installation. Re-install seals (refer to drawings at the end of
the manual).
UHP seal carrier Worn or damaged UHP plungers. Install a Minor or Major Maintenance Kit.
Incorrect seal installation.
Cooling ports clogged; insufficient cooling wa-
ter flow.
Clean cooling ports. Inspect water filters and
user-supplied water pressure.
Inlet check valve Improperly lapped components. Lap components (see Lap the inlet face of the
inlet check valve).
Inlet poppet pinched. Install a Minor or Major Maintenance Kit.
Broken spring.
Filler tube or sleeve worn out.
Improper use of lubricants on check valve sur
-
faces.
Clean and re-install the check valve with the
proper amount of lubrication (see section As
-
semble the check valve).
Debris/dirt between poppet and seat. Clean out debris; inspect poppet and seat for
damage. Install Minor or Major Maintenance
Kit if necessary.
Outlet check valve Broken spring. Clean out debris; inspect poppet and seat for
damage. Install Minor or Major Maintenance
Kit if necessary.
Debris/dirt between poppet and seat.
UHP plunger Worn or damaged seal carrier. Install Major Maintenance Kit.
Incorrect seal installation (seal reversed).
Cooling ports clogged; insufficient cooling wa
-
ter flow in subplate adapter and seal carrier.
Clean cooling ports, inspect water filters and
operator-supplied water pressure.