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Model W1791/W1792 Mini HVLP Spray Gun

-10-

Cleaning

Figure 10. 

Disassembly for cleaning.

 

Atomizing 

Cap

Fluid Tip

Strainer

Spring

Cup

Fluid 

Control 

Knob

Needle

Proper cleaning is the best way to ensure 
trouble free performance from your spray 
gun. If your gun is not thoroughly cleaned, 
damage  and  poor  spraying  will  result. 
Problems caused by improper cleaning will 
not be covered by the warranty. Clean the 
spray gun immediately after each use.

To clean your spray gun:

1. 

Spray a small amount of solvent 
through the spray gun.

 
 

Note: 

Check with local laws 

regarding this practice. If you are 
spraying on a regular basis, spraying 
solvents into the air may be illegal. A 
cabinet style spray gun cleaner may 
be required.

 

2.

  DISCONNECT SPRAY GUN FROM AIR!

3. 

Unscrew the cup.

4. 

Disassemble the gun by unscrewing 
the fluid control knob, removing the 
spring and needle (

Figure 10

).

5.

  Unscrew the atomizing cap with 

your fingers and the fluid tip with 
the service wrench. The fully 
disassembled gun should look like 

Figure 10

.

6.

  Rinse these parts thoroughly in 

solvent then dry with compressed air 
or let air dry.

 

Note:

 

If the small holes in the 

atomizing cap become blocked, soak 
in clean solvent. If the blockage 
still exists, clear the blockage with 
a small needle, taking great care 
to not enlarge or damage the hole. 
Damage to the hole will create a 
disrupted spray pattern.

7.

  Use the cleaning brush with solvent 

to clean the inner orifice and other 
hard to reach areas on the outside of 
the spray gun body.

8.

  Wipe the rest of the gun body with a 

shop towel and dry.

EXPLOSION  HAZARD!  Chlorinated 
Solvents  like  Tricloroethane  and 
Methylene Chloride (methyl chloride) 
can  chemically  react  with  aluminum 
and may explode. Many parts in spray 
guns  are  made  of  aluminum.  Read 
solvent  label  carefully  before  using 
solvent.

NOTICE

DO  NOT  soak  the  spray  gun  body 
in  solvent.  Prolonged  exposure  to 
solvent  will  rapidly  deteriorate  the 
spray gun washers and seals. Ignoring 
this notice will void your warranty.

CLEANING & LUBRICATION 

Summary of Contents for W1791

Page 1: ...OPYRIGHT JUNE 2007 BY WOODSTOCK INTERNATIONAL INC WARNING NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF WOODSTOCK INTERNATIONAL INC 9612TR PRINTED IN CHINA MODEL W1791 W1792 MINI HVLP SPRAY GUN OWNER S MANUAL W1791 W1792 ...

Page 2: ... ...

Page 3: ...do a job for which it was not designed 9 DO NOT USE UNDER THE INFLUENCE OF DRUGS OR ALCOHOL SAFETY For Your Own Safety Read Instruction Manual Before Operating This Equipment The purpose of safety symbols is to attract your attention to possible hazardous conditions This manual uses a series of symbols and signal words which are intended to convey the level of importance of the safety messages The...

Page 4: ...accessories 16 REDUCE THE RISK OF UNINTENTIONAL FIRING Do not carry tool with hand on trigger and always disconnect from air when not in use 17 DISCONNECT TOOLS before servicing changing accessories or moving to another location 18 DO NOT OVERREACH Keep proper footing balance at all times 19 USE THE RECOMMENDED ACCESSORIES Consult owner s manual for recommended accessories The use of improper acce...

Page 5: ...ions for Spray Guns 8 PROTECTIVE CLOTHING Protect exposed skin from overspray by wearing a protective suit or other approved garment 9 UNSAFE USE DO NOT point or shoot spray gun directly at yourself or another person or animals Do not attempt to use the spray gun for any other use than it was intended 10 STORAGE Thoroughly clean and dry spray gun before storage Store in an approved cabinet 11 SOLV...

Page 6: ...onal Inc is commit ted to customer satisfaction Our intent with this manual is to include the basic information for safety setup operation maintenance and service of this product We stand behind our tools In the event that questions arise about your tool please contact Woodstock International Technical Support at 360 734 3482 or send e mail to tech support shopfox biz Our knowl edgeable staff will...

Page 7: ...u can t find an item on this list check the mounting location on the tool or examine the packaging materials carefully Occasionally we pre install certain components for safer shipping W1791 Inventory Figure 1 Qty A Spray Gun 1 B Cup 100 ml 1 C Cleaning Brush 1 D Service Wrench 1 E Filters 2 F Barbed Hose Fitting 1 G Lock Nut 1 H Air Regulator 1 W1792 Inventory Figure 2 Qty A Spray Gun 1 B Cup 120...

Page 8: ...un body see Figure 3 1 Fluid Control Controls the volume of material that travels through the fluid tip 2 Pattern Control Adjusts the spray pattern from a round pattern to a wide fan 3 Air Flow Control Controls the fluid pressure inside the spray gun 4 Atomizing Cap Controls the spray pattern from vertical to horizontal 5 Trigger Two stage trigger Stage one only releases compressed air for blowing...

Page 9: ...working projects or projects with hard to reach areas It is not for use with any water based material To use your spray gun 1 Read and follow the material manufacturer s instructions for spraying mixing safety disposal and any other instruction on the label or Material Safety Data Sheet MSDS 2 Ensure the cup is securely tightened and all other fittings are secure to avoid air leaks or material spi...

Page 10: ...distribute the material unevenly possibly creating sags and dry spots 10 Begin spraying 2 3 inches before the work and continue to the end of the work Continue the motion for a few inches past the work until you are ready for the return stroke 11 Maintain an even speed when spraying 12 Overlap each stroke by 50 This will ensure even coverage as shown in Figure 6 Overlapping less than 50 as shown i...

Page 11: ...y clogged atomizing holes on the atomizing cap horns see Cleaning on Page 10 Figure 7 Set up for vertical stroke direc tion with horizontal fan pattern Stroke Rotating the pattern adjustment control in Figure 8 will give you a range between the two patterns in Figure 9 Figure 9 Fan adjustment Atomizing Cap and Fan Adjustments Figure 8 Set up for horizontal spray stroke with vertical fan pattern Pa...

Page 12: ...our fingers and the fluid tip with the service wrench The fully disassembled gun should look like Figure 10 6 Rinse these parts thoroughly in solvent then dry with compressed air or let air dry Note If the small holes in the atomizing cap become blocked soak in clean solvent If the blockage still exists clear the blockage with a small needle taking great care to not enlarge or damage the hole Dama...

Page 13: ...spray gun lube after cleaning A Atomizing Cap Threads B Air Valve Packing C Trigger Pin D Air Flow Control Valve E Pattern Control F Fluid Control Knob After each cleaning apply a thin film of petroleum jelly to the needle spring before reassembling Figure 11 Lubrication points A B C D E F ...

Page 14: ...rn 1 Left or right side horn holes are plugged 2 Build up on left or right side of fluid tip 3 Build up of material inside atomizing cap 1 Clear holes 2 Clean 3 Clean Heavy deposit of material in center 1 The material flow exceeds the atomizing cap capacity 2 Inlet air pressure is too low 3 Material is too thick 1 Lower fluid flow 2 Increase inlet air pressure 3 Thin material Narrow center pat ter...

Page 15: ...t tilt Material leaks from gun 1 Fluid tip loose 2 Dry or damaged seals 3 Excessive pressure 1 Tighten 2 Replace seals 3 Reduce pressure Thick dimpled fin ish aka Orange Peel 1 Holding gun too close to sur face 2 Inlet air pressure too low 3 Material not properly mixed 4 Surface is dirty or oily 1 Spray at recommended dis tance 2 Check inlet air pressure 3 Follow manufacturer s instructions 4 More...

Page 16: ...1011 SWITCH KNOB 36 X1791036 FLUID NEEDLE SPRING 12 X1791012 SWITCH WASHER 37 X1791037 JOINT CAP 13 X1791013 LOCK SCREW 38 X1791038 FLUID ADJUST KNOB 14 X1791014 AIR CAP NUT 39 X1791039 FLAT HD SCR M2 5 45 X 8 15 X1791015 AIR CAP WASHER 40 X1791040 PATTERN ADJUST JOINT CAP 16 X1791016 AIR CAP 41 X1791041 PATTERN ADJUST SCREW 17 X1791017 STEEL BALL 42 X1791042 O RING 2 X 1 5 18 X1791018 O RING 17 X...

Page 17: ...EEDLE 11 X1791011 SWITCH KNOB 36 X1791036 FLUID NEEDLE SPRING 12 X1791012 SWITCH WASHER 37 X1791037 JOINT CAP 13 X1791013 LOCK SCREW 38 X1791038 FLUID ADJUST KNOB 14 X1791014 AIR CAP NUT 39 X1791039 FLAT HD SCR M2 5 45 X 8 15 X1791015 AIR CAP WASHER 40 X1791040 PATTERN ADJUST JOINT CAP 16 X1791016 AIR CAP 41 X1791041 PATTERN ADJUST SCREW 17 X1791017 STEEL BALL 42 X1791042 O RING 2 X 1 5 18 X179101...

Page 18: ...nternational Inc s warranty then the original owner must bear the cost of storing and returning the product This is Woodstock International Inc s sole written warranty and any and all warranties that may be implied by law including any merchantability or fitness for any particular purpose are hereby limited to the duration of this written warranty We do not warrant that Shop Fox machinery complies...

Page 19: ...o a friend _____ Yes ____ No 6 What is your age group _____ 20 29 ____ 30 39 ____ 40 49 _____ 50 59 ____ 60 69 ____ 70 7 What is your annual household income _____ 20 000 29 000 ____ 30 000 39 000 ____ 40 000 49 000 _____ 50 000 59 000 ____ 60 000 69 000 ____ 70 000 8 Which of the following magazines do you subscribe to 9 Comments __________________________________________________________________ ...

Page 20: ...TAPE ALONG EDGES PLEASE DO NOT STAPLE FOLD ALONG DOTTED LINE WOODSTOCK INTERNATIONAL INC P O BOX 2309 BELLINGHAM WA 98227 2309 Place Stamp Here FOLD ALONG DOTTED LINE ...

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