IBEX 8 Nozzle SMALL FRAME_June 2020 June 20 Page 11 of 41
8. PRESSURIZING THE SYSTEM
8.1 ABOUT PRESSURE REGULATOR
The regulator is set as a safety valve should the system pressure exceed IBEX: 1,100 PSI (75.8 Bar). At
extremely low flow, the regulator will bypass water back into the pump head as the VFD drive has
reached its minimum Frequency (Hertz).
8.2 PROCEDURE TO RESET THE PRESSURE REGULATOR
ABOUT THE PRESSURE REGULATOR: ADJUSTMENTS SHOULD NOT BE MADE TO REGULATOR. ONLY
FOLLOW THIS RESET PROCEDURE IF REGULATOR IS REPLACED OR WHEN REPLACING PUMP HEAD.
Safety glasses must be worn when adjusting pressure. Always keep guards and covers in place.
NEVER DISASSEMBLE THE REGULATOR UNDER PRESSURE!!!
If for any reason the regulator is adjusted, or changed, follow this procedure to reset the correct adjustment.
Press F3 (IBEX) to turn off the pump.
Turn off the electrical supply at the disconnect switch to electrically isolate the pump.
Locate the pressure transducer and unplug the electrical lead by squeezing the clip.
Restore the power and start the unit by pressing F1.
Adjust the regulator by turning* clockwise or counter-clockwise until the pressure gauge indicates 1,100 psi
(75.8 Bar) for IBEX. When the pressure is steady at 1,100 make sure that the “Jam Nut” is tightened to lock
the adjustment in position. [*Clockwise: increase pressure. Counterclockwise: decrease pressure.]
Press F3(IBEX) or F2(FOCUS) to stop pump, shut off power. Plug electrical lead back into transducer,
restore electrical power.
See Manual for ‘PRESSURIZING SYSTEM’. Once the maximum pressures are achieved (above), system will
fall back and maintain pressure IBEX: 1,000 PSI.
regulator assembly.
Example: Pressure regulator
assembled on pump head.
Example: Pressure regulator
assembled on pump head.
IBEX: Where to locate pressure
transducer underneath pump.
underneath pump.
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