75
Eagle_en_Ver.1.0_2020
Adjustment / Test
J
Unloader adjustments
INTERGRAL UNLOADER
Adjustment procedure for Unloader.
Install test pressure gauge with fully open valve on the pump outlet.
Install high pressure hose, gun and lance with new high pressure nozzle on the test pressure gauge.
Loosen counter nut (pos. 403, fig 2)
Start machine with fully open gun.
Adjust to specified pressure on adjustment screw (pos. 402, fig 2). Read pressure on test manometer.
Adjustment is done by the adjustment screw (pos. 402 fig. 2) counterclockwise until the pressure just
starts to drop. Then turn the adjustment screw (pos. 402 fig. 2) clockwise until you reach the full
pressure again.
When pressure is adjusted correct, tighten counter nut (pos. 403, fig. 2)
For products with a data sheet* find the correct test values with tolerances in the product data sheet.Data is to
be found in the Technical Data. See section ”B”
For older products without data sheet use the below general rule.
Pressure Under Load (With Trigger Pulled And Correct Nozzle) Should Match Factory Specified Pressure.
No Load Pressure Should Not Be In Excess Of 10% Of Working Pressure**.
**Example : 4000 PSI in Bypass + 10 % Should Not Exceed 4400 PSI
Fig. 1 Fig. 2
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