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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 that the power unit operator and other people working in the vicinity of the
power unit wear appropriate hearing protection when the unit is running.
1. Engage the pressure pump by turning the start-up by-pass valve to the
“CLOSED” position (See Figure 5.1).
2. The most efficient operating technique is to hold the nozzle 2-5 inches (5-12
cm) away from the surface to be cleaned and at a 25 to 45 degree angle to
the surface being cleaned (See Figure 5.3). The diver needs to observe the
shape of the cavitating jet cone. At greater depths, the higher ambient
pressure will cause the jet cone to be shorter. The widest zone of the cone is
the most efficient part of the cavitating jet. Placing the nozzle closer than 2
inches (5 cm) from the surface being cleaned will not allow for efficient
cavitation performance and will degrade the cleaning capability of the
CaviBlaster
system.
3. Follow all safety regulations that may be applicable to the work being
performed.
4. If the diver operating the unit must be replaced or the cleaning operation must
be interrupted or terminated, turn the unit off
and then release the water
pressure in the hose(s) by squeezing the gun trigger to the open or “ON”
position (See Figure 5.3)
while under water
.
Revert back to step 5.2 of the
operating instructions when the diver or replacement is ready to continue
cleaning.
