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Figure 5.2
– Zero-thrust gun Pressure Calibration
5.5 Recommendations for Effective Results
Once the unit is operating at normal speed and the gun trigger is pulled, the diver
has to find the most effective distance between the gun nozzle and the surface
being cleaned.
When the diver is ready to commence cleaning operations, ensure that the gun
trigger is in the open or “ON” position (See Figure 5.3), the gun is submerged in
the water and the feed pump is operating prior to starting the electric motor. Ensure
Hoses are rated for 3,000 psi (205bar). Pressures above
3,000-psi (205bar) could result in pump and / or hose failure.
Calibration gauge
Whip hose
Main hose
Whip hose
