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Replacement of Material Control Nozzle and Needle

1. Remove the air control head (see 

5.5 Replacement of Air Control Head

)

2. Unscrew the material nozzle (pos. 3) from the gun body (pos. 6). Remove the

sealing washer (pos.4) and the air distribution ring in (pos. 5). 

3. Unscrew the drawbar (pos. 24).
4. Unscrew the cap (pos. 23) and the threaded bushing (pos. 22) from the gun body.
5. Pull off the material control needle with the Parts (pos. 17-20) from the gun body.
Installation of the new nozzle insert assembly and the remaining parts is performed in
the reverse order.

6

Cleaning

6.1

Safety Warnings

• Prior to any servicing and repair work: Make sure that the spray gun is in unpressu-

rized condition, i.e. all air and material inputs must be shut off - if not, imminent risk
of injury.

• No open fires, naked light and smoking allowed in the work area. When spraying

readily flammable media such as cleaning solutions, there is an increased risk of
fire and explosion.

• Observe the safety warnings issued by the manufacturer. Aggressive and corrosive

media represents risks and hazards to personal health.

6.2

Cleaning - Complete

Regular cleaning and lubrication of the spray gun has to be performed, in order to
increase the service life and the function of the spray gun.

Clean the gun only with cleaning solutions recommended by the manufacturer of the
spraying material used at the time. It is important to make sure that cleaning soluti-
ons do not contain any of the following constituents:
• halogenated hydrocarbons

(e.g. 1,1,1-trichloroethane, methylene chloride, etc.)

• acids and acidiferous cleaning solutions
• regenerated solvents (so-called cleaning dilutions)
• paint removers.
The above constituents cause chemical reactions with the electroplated components
resulting in corrosion damage.
WALTHER PILOT is not responsible for any damages resulting from such treatment.

Clean the spray gun 
• prior to each change of the spraying medium
• at least once a week
• as often as may be required by the spraying medium handled and the resultant 

degree of fouling.

Caution

Never immerse the spray gun in solvent or any other cleaning solution. The
functional reliability and efficiency of the gun can otherwise not be guaranteed.

Caution

Do not use any hard, pointed or sharp-edged objects when cleaning the spray
gun. Any damage of the precision-made parts are likely to affect your spraying
results.

1. Dismantle the spray gun in accordance with 

5.5 Replacement of Material

Control Nozzle and Needle.

2. Use a soft brush together with a compatible cleaning sulotion to clean the air

control head and nozzle.

3. Clean the remaining parts and the spray gun body with a suitable cloth and

cleaning solution.

4. Apply a thin film of the appropriate grease to the:

• sealing collar of the piston 
• O-ring of the piston
• material control needle
• needle spring

Make sure to use a non-acidic, non-resinogenic grease and a soft brush. The
spray gun is then reassembled in reverse order.

6.3

Cleaning - Routine

The spray gun need not necessarily be dismantled for cleaning if and when the
spraying medium is changed in regular intervals or upon termination of work
(depending on the material used).

Note

Clean and lubricate the spray gun frequently in accordance with Chapter

6.2

Cleaning - Complete

. This will ensure functional reliability of the spray gun.

The following requirements must be met before the routine cleaning work can be
performed:

1. The material tank must be claen and then be filled with a compatible cleaning

aolution. Material pressure has to be available at the spray gun. The cleaning
solution should not be sprayed.

2. Take the spray gun into operation (see 

5.2 Starting the Spray Gun

). 

3. Do not stop the spray gun until clear cleaning solution emerges from the nozz-

le.

The material supply of the PILOT WA 450, WA 451, WA 452 and WA 453 can be
manually released so that it is not necessary to operate the complete spraying
system. All pressures should then be removed from the complete spraying system
until the next operation.

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Summary of Contents for WA 450

Page 1: ...teme Airless Ger te und Fl ssigkeitspumpen Materialumlaufsysteme Kombinierte Spritz und Trockenboxen Absaugsysteme mit Trockenabscheidung Absaugsysteme mit Na abscheidung Pulverspr hst nde Trockner Zu...

Page 2: ...Inbetriebnahme ist so lange untersagt bis die Konformit t des Endproduktes mit der Richtlinie 98 9 EG festgestellt ist i V Declaration of CE Conformity We the manufacturers of the equipment hereby dec...

Page 3: ...PILOT WA 450...

Page 4: ...mplett 25 V 66 101 53 322 Steuerluftanschlu 26 V 66 101 53 015 Zerst uberluftanschlu 2x 27 V 66 100 06 255 Materialanschlu 28 V 20 510 21 003 Befestigungsbolzen 29 V 20 545 20 003 Schraube 2x PILOT WA...

Page 5: ...0 sind keine handge f hrten Spritzpistolen und m ssen deshalb an einer geeigneten Halterung befe stigt werden Die bestimmungsgem e Verwendung schlie t auch ein da alle Hinweise und Angaben der vorlieg...

Page 6: ...nfeder verschlie t die Materialzufuhr zur Materiald se Anschlie end wird die Zerst uberluft ber das 3 2 Wege Ventil abgeschaltet Die Modelle PILOT WA 452 und WA 453 sind reine Niederdruck Spritzpistol...

Page 7: ...Im Arbeitsbereich ist Feuer offenes Licht und Rauchen verboten Beim Verspritzen leicht entz ndbarer Materialien z B Lacke Kleber besteht erh hte Explosions und Brandgefahr 5 2 Inbetrieb und Au erbetr...

Page 8: ...eiten hinaus ver ndern wollen mu die Spritzpistole umger stet werden siehe 5 5 Spritzpistole umr sten WALTHER bietet dazu eine Vielzahl unterschiedlicher Luftkopf Materiald se Nadel Kombinationen an M...

Page 9: ...Spritzpistole vor jedem Farb bzw Materialwechsel mindestens einmal w chentlich materialabh ngig und je nach Verschmutzungsgrad mehrfach w chentlich Achtung Legen Sie die Spritzpistole nie in L semitte...

Page 10: ...tauscht werden m ssen Materiald se Druckfeder des Kolbens Materialnadel Nadelfeder Manschette des Kolbens O Ring des Kolbens Hinweis Die mit gekennzeichneten Bauteile m ssen vor dem Einbau in den Pist...

Page 11: ...x 6 bar Schalldruckpegel gemessen in ca 1 m Abstand zur Spritzpistole 83 dB A Luftverbr uche Bei einem Eingangsdruck von 4 5 bar betr gt der Spritzdruck 0 7 bar Technische nderungen vorbehalten Zerst...

Page 12: ...ompl 25 V 66 101 53 322 Control air inlet 26 V 66 101 53 015 Atomizing air inlet 2x 27 V 66 100 06 255 Material inlet 28 V 20 510 21 003 Mounting pin 29 V 20 545 20 003 Screw 2x PILOT WA 451 Circulati...

Page 13: ...in a suitable gun mounting device The term normal use also implies that any and all safety warnings operational handling details etc as stated in these operating instructions must be carefully read un...

Page 14: ...2 way valve The models PILOT WA 452 and WA 453 are solely low pressure spray guns and operate with a spraying pressure of 0 7 bar using an inlet pressure of 4 5 bar 3 Generally Applicable Safety Preca...

Page 15: ...ohibited in the working area Spraying of readily flammable media such as paints and adhesive compounds is always accompanied by the risk of fire and explosion 5 2 Starting Stopping Requirements The fo...

Page 16: ...nd the adjustments outlined so far you must retool the spray gun See 5 5 Retooling of Spray Gun WALTHER offers a great variety of air control head material control nozzle needle combinations for this...

Page 17: ...ing medium at least once a week as often as may be required by the spraying medium handled and the resultant degree of fouling Caution Never immerse the spray gun in solvent or any other cleaning solu...

Page 18: ...dle spring Cup seal Piston O ring Note Parts marked with must be lubricated with non acidic non resinogenic grease prior to installation WALTHER PILOT repair kits are available for PILOT WA 450 WA 451...

Page 19: ...6 bar Sound Level measured at a distance of 1 m from the spray gun 83 dB A Air consumption The spraying pressure is 0 7 bar with an air input pressure of 4 5 bar Right to effect technical changes rese...

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