Index revision : A
12
7116
1.5.5. Shaping air
Do not atomize the product until the guiding air rate is at least 150 Nl/min. If it is less, a feedback of atom-
ized product may occur, possibly fouling the outer shaping air shroud (and the inside surface of the inner
shaping air shroud) and resulting in faulty application.
1.5.6. High voltage
If atomizer PPH 707 CHEM ICWB M TI is not operating for a prolonged period (conveyor shutdown,
uncovereded objects, slack periods, etc.), switch off the high-voltage supply to prevent air ionisation.
WARNING : Rinsing cycles (bell cup exterior and injector) must be performed after previously
switching off the high voltage supply.
1.5.7. Maximum speed
Excessive turbine speed can result in serious damage to the turbine and loss of connection between the
bell cup and turbine, presenting a risk to persons and equipment. The speed must not exceed 85,000
rpm.
WARNING : The guarantee does not cover damage resulting from a rotation speed greater than
85,000 rpm.
1.5.8. Vibrations
If the atomizer vibrates abnormally, the cause is generally unbalanced rotating parts. If this is the case,
the rotation speed will rapidly decrease, inevitably causing damage to the turbine. Coating product
deposits, damage or dry coating product residues on the bell cup or fastening cone are the possible
causes of a balancing defect. If significant vibration is observed, the problem must be immediately cor-
rected. A significant imbalance of more than G 0.4 (1/1000 gr x 1cm radius) will inevitably deteriorate the
turbine.
WARNING : The guarantee does not cover damage caused by imbalance of rotating parts.
1.5.9. Ventilation
Do not begin applying coating product with atomizer PPH 707 CHEM ICWB M TI
before starting up the
ventilation system in the spraying booth. If the ventilation is cut, toxic substances such as organic sol-
vents or ozone may remain in the spraying booth, resulting in a risk of fire, poisoning or irritation.
1.5.10. O-ring seals
Use the seals recommended in this manual. For solvent-based products, seals in contact with the
product must be chemically inert seals resistant to swelling or chemical attack. The correct operation of
atomizer PPH 707 CHEM ICWB M TI is only guaranteed if used with seals of sizes and materials in com-
pliance with those specified in this manual.
1.5.11. Residual pressure
Before all maintenance or repair operations, remove product and solvent from the atomizer, switch off
the high voltage power supply and cut the product, solvent and air supplies, then release residual
pressure in each supply system. Residual pressure may lead to component damage and expose per-
sonnel to serious injuries. The dispersion of product, solvent or other sprayed chemicals may also lead
to poisoning or irritation.
