Not getting flow-rate & pressure
S.N. Trouble Cause Remedy Remarks
1
Low Pressure, Adequate Flow
Worn, Incorrect, No Spray Nozzle
  Replace with Correct Spray Nozzle
 
Lance on Low Pressure Setting
  Adjust Lance on correct pressure.
 
Unloader / Pressure Regulating Valve Improperly Adjusted
  Adjust Unloader / Pressure Regulating Valve properly
 
Pressure Gauge Inaccurate or Broken
  Replace Pressure Gauge
 
Worn Pump Packing
  Replace Pump Packing
 
2
No fluid
No Power to the Pump
  ON the Power switch
 
Clogged Spray Nozzle
  Unclog Spray Nozzle
 
Clogged Inlet Filter
  Unclog Inlet Filter
 
Faulty Unloader
  Replace the Unloader
 
Pinched or Clogged Inlet Hose
  Unclog the Inlet Hose
 
Inlet Valve(s) Not Open
  Open the Inlet Valve
 
3
Low Pressure, Low Flow
Volume Improperly Adjusted
  Properly Adjust Volume
 
Drive Belts Loose
  Tighten Drive Belts
 
Defective Easy Start Valve
  Replace Easy Start Valve
 
4
Low Pressure, Very Low Flow
Outlet Restriction
  Remove restriction
 
Clogged Nozzle
  Unclog the Nozzle
 
Restriction in the High Pressure Hose
  Remove restriction
 
Debris in the System
  Remove debris
 
Clogged Inlet Hose or Filter
  Unclog the hose or filter
 
Faulty Pressure Gauge
  Replace Pressure Gauge
 
5
Excessive Pressure
Unloader/Regulator Improperly Adjusted
  Properly adjust Unloader/Regulator
 
Faulty Unloader / Regulator
  Replace Unloader / Regulator
 
Spray Nozzle Too Small
  Use proper Spray Nozzle
 
6
Pump runs, but produces no flow
Pump is not primed.
Flood suction then restart pump
 
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