Locking; Shaping Air; High Voltage; Maximum Speed - SAMES KREMLIN PPH 308 User Manual

1.5.4. Locking

Do not spray if the bell cup is rotating at less than 15,000 rpm. At lower speeds, paint or solvent
may enter the turbine, bearing and control circuits. Opening the head valve, injector rinsing
valve and bell cup exterior rinsing valve is therefore prohibited when the bell cup is not rotating.
Only qualified personnel are authorised to by-pass this locking system for flow rate checks.
WARNING : When the turbine is initially shut down, wait until the bell cup is rotating (min. 15,000
rpm) before opening the head valve. The recommended minimum waiting time is
2 seconds.

1.5.5. Shaping air

Do not spray if there is not a minimum of 80 Nl/min shaping air (i.e. 0.3 bar at atomizer inlet) At
lower pressures, the product may re-enter the device and foul the outer cover and the inner
surfaces of the shaping air shroud, resulting in incorrect application.

1.5.6. High voltage

High voltage operation should be prohibited when atomizer PPH 308 is not spraying for an
extended period (conveyor shutdown, objects not painted, holes etc.), to prevent air
ionisation.
WARNING : High voltage power supply must be disconnected before performing rinsing cycles
(bell cup exterior and injector).

1.5.7. Maximum speed

Excessive turbine speeds cause considerable damage to the turbine. The speed must not
exceed 45,000 rpm.
WARNING : The warranty does not cover damage resulting from rotation speeds greater than
45,000 rpm.

1.5.8. Bell Cup / Turbine Fitting

The bell cup must be properly fitted to the turbine. A "click" should be heard when it is
assembled. The two cylinder should rest one against the other, without any foreign body
between them. If they are incorrectly assembled, they may come apart and the bell cup
ejected while revolving, causing a hazard for people and equipment.

1.5.9. O-ring seals

Use the seals recommended in this manual. If solvent-based products are used, seals coming
into contact with the product should be chemically-inert O-rings in order to prevent swelling or
chemical corrosion. Correct operation of the PPH 308 is only guaranteed if it is used with seals
whose dimensions and materials comply with those specified in the manual.
Index revision : C - November 2017 13 7030