Hog Technologies STRIPE SH7500, Руководство по эксплуатации

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Appendix 1 - Troubleshooting
PROBLEM CAUSE AND SOLUTION
UHP Pump & High Pressure System
Dump valve will not activate • Charge water pressure is below 30 PSI (2
BAR) and the charge pressure safety switch
is preventing Dump vale operation. Find and
correct the cause of low charge pressure. Refer
to Low charge water pressure.
• The charge pressure safety switch is defective.
Replace safety switch.
• Water in the pressure hose between the
charge water safety switch and 1 micron filter
has frozen. Thaw frozen water in hose. (Cold
weather operation only)
Low blasting pressure at nozzles. • Truck engine speed is too low. Raise engine
speed.
• Warn or blown nozzles. Change nozzles.
• Nozzles are leaking. Tighten or replace nozzles.
• Oversized nozzles. Refer to chart to correct
nozzle pattern.
• Water leaks in UHP hoses, fittings. Tighten loose
fittings or replace defective hoses and damaged
fittings.
• UHP pump valves or seals damaged or worn.
Check valves for heat indicating internal bypass.
Service or replace valves as required
• Worn or missing button seal between spray bar
and shaft. Replace button seal.
• Air lock in fluid end manifold. Remove rupture
disc assembly or the side port fitting, start
auxiliary engine and advance engine speed to
maximum operating RPM to bleed system and
remove air lock.
• Low charge water pressure. Refer to low charge
water pressure problems.
• One or more UHP pump stuffing box seals are
leaking. Replace leaking seal or seals.
• Dump Valve cartridge leaking. Repair or replace
leaking cartridge.
• By-pass valve cartridge leaking. Remove diffuser
tube and replace cartridge.
• Swivel seal is worn or damaged. Replace
damaged swivel seal.
• Swivel shaft is cracked. Replace damaged swivel
shaft.