Correction Of Spray Pattern Imperfections; Cleaning And Maintenance; Safety Instructions; General Cleaning Procedure - SIMALFA G1 Betriebsanleitung

5.6

Correction of Spray Pattern Imperfections

The following table shows how to correct a defective spray pattern.
Spray pattern test
Swollen centre
Swollen ends
Coarse pearl effect
Unduly thin paint
layer in centre
Split centre
Split centre
6

Cleaning and Maintenance

6.1

Safety Instructions

• Prior to any service work atomising air as well as material input to the spray gun
should be shut off - risk of injury.
• Open fires, naked lights and smoking are prohibited in the working area.
There is an increased risk of fire and explosion, when spraying readily flammable
media, such as cleaning solutions.
• Follow the safety instructions issued by the manufacturers of the cleaning media.
Aggressive and caustic cleaning agents in particular represent health hazards.
6.2

General Cleaning Procedure

The spray gun should be frequently cleaned and lubricated to ensure reliable
opera- tion and long life.
Caution
Never immerse the spray gun in solvents or other cleaning fluids as this will impair
the functional reliability and efficiency of the gun.
Caution
Do not use any hard or sharp-pointed objects when cleaning the spray gun, as the
precision-made parts can easily be damaged and are likely to affect your spraying
results.
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Desired Spray Pattern
Fault Necessary adjustment
• Spray jet should be flatter
• Spray jet should be rounder
• Increase atomising air pressure
• Decrease atomising air pressure
• Increase nozzle diameter
• Reduce atomising air pressure
• Increase material pressure
• Decrease material pressure
• Increase atomising air pressure
Only use cleaning solutions recommended by the manufacturer of the spraying mate-
rial. These solutions should not contain any of the following constituents:
• halogenated hydrocarbons (e.g. 1,1,1-trichloroethane, methylene chloride etc.)
• acids and acidic cleaning solutions
• regenerated solvents (so-called cleaning dilutions)
• paint removers.
These constituents cause chemical reactions with electroplated components resulting
in corrosion damage.
The manufacturer is not liable for any damages resulting from improper treatment of
the gun.
The spray gun should be cleaned
• at least once a week
• as often as necessary in a week depending on the spraying medium used and the
resulting level of soiling.
The above cleaning measures are designed to maintain the functional efficiency of
the gun.
1. Dismantle the gun as described in section 5.5 Retooling the Spray Gun.
2. Clean the air control head and nozzle with a brush dipped in the recommended
cleaning solution.
3. Clean the gun body and all remaining parts with a soft cloth and the recommended
cleaning solution.
4. Apply a thin layer of grease to the following parts, we recommend the ALFA Hand
Cleaner:
• Material needle
• Needle Spring
• All sliding parts and bearings.
• The moveable inner parts should be greased at least once a week.
• The springs should at all times be coated with a thin layer of grease.
Use non-acidic, non-resinogenic grease or ALFA Hand Cleaner and a brush. The
spray gun is then reassembled in reverse order.
6.3

Routine Cleaning

It is not always necessary to dismantle the spray gun for cleaning purposes when the
material is changed or at the end of a work period.
For routine cleaning purposes please observe the following steps:
1. Dismantle the spray gun off the free flow system.
2. Rinse the spray gun with water and if necessary dismount the material nozzle to
be able to clean the inside parts.
3. Reassemble the spray gun and attach to the free flow system.
4. Start the spray gun (see 5.2 Requirements at the Start and Finish of Operation).
The complete free-flow spray station can stay attached to the air pressure until the
spray gun is used again.
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