Spray Gun Lubrication - DeVilbiss SRi Pro Serie Manual De Instrucciones

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Page 8

SB-2-855-B

INSTALLATION

For maximum transfer efficiency,

do not use more pressure than is

necessary to atomize the material

being applied . NOTE: when using the

HS1, HVLP setup do not exceed 29.0

psi (2 bar) inlet pressure. This will

insure HVLP compliance by limiting

air cap pressure to 10 psi (0.7 bar).

1 . Connect the gun to a clean,

moisture and oil free air supply

using a conductive hose .

NOTE

Install an air gauge at the

gun

handle .

When

triggered

on,

regulated pressure to 29 .0

psi (2 .0 bar) . Do not use

pressure

than

necessary to atomize the

material

being

Excess pressure will create

additional

overspray

reduce transfer efficiency .

NOTE

If an air adjusting valve

is used at the gun inlet,

use DeVilbiss model HAV-

512 .

Some

competitive

adjusting

valves

significant

pressure

that can adversely affect

spray

performance .

DeVilbiss

model

HAV-512

has minimal pressure drop,

which is important for HVLP

spraying .

2 . Attach the gravity feed cup to the

material inlet .

NOTE

Before using the gun, flush

it with solvent to ensure that

the fluid passages are clean .

OPERATION

1 . Mix

coating

material

manufacturer's instructions .

2 . Strain the material .

3 . Fill the cup to no more than 1/2

inch from the top of the cup . DO

NOT OVERFILL .

4 . Attach Cup Lid . Make sure that the

cup lid vent hole is clear .

5 . Turn fluid adjusting knob (18)

clockwise to prevent fluid needle

movement .

6 . Turn spreader valve adjusting knob

(23) counter clockwise to fully

open .

7 . Adjust inlet air pressure to 29 .0 psi

(2 .0 bar) .

8 . Turn fluid adjusting knob counter

clockwise until first thread shows .

9 . Test spray . If the finish is too dry,

reduce airflow by reducing air inlet

pressure .

10 . If finish is too wet, reduce fluid

gun

adjust

flow by turning fluid adjusting

knob (18) clockwise . If atomization

is too coarse, increase inlet air

pressure . If too fine, reduce inlet

pressure .

applied .

11 . The pattern size can be reduced

by turning spreader valve knob

and

(23) clockwise .

12 . Hold gun perpendicular to surface

being sprayed . Arcing or tilting

may result in uneven coating .

13 . The recommended spray distance

is 3-6 in (75-150 mm) .

14 . Spray edges first . Overlap each

have

stroke a minimum of 75% . Move

drop

gun at a constant speed .

15 . Always turn off air supply and

The

relieve pressure when gun is not

in use .

PREVENTIVE MAINTENANCE

& CLEANING

To clean air cap and fluid nozzle,

brush exterior with a stiff bristle

brush . If necessary to clean cap holes,

use a broom straw or toothpick if

possible . If a wire or hard instrument

is used, extreme care must be used

to prevent scratching or burring of

the holes which will cause a distorted

spray pattern .

To clean fluid passages, remove

excess material from cup, then flush

with gun wash solution . Wipe the

gun exterior with a dampened cloth .

Never completely immerse in any

solvent or cleaning solutions as this

is detrimental to the lubricants and

life of the spray gun .

NOTE

When replacing the fluid

nozzle

fluid

replace both at the same

time .

Using

worn

can

cause

fluid

leakage .

See page 13, Chart 2 . Also,

replace the needle packing

at this time . Torque the fluid

nozzle to 80-90 in-lbs (9-10

Nm) . Do not over tighten .

CAUTION

To prevent damage to fluid

nozzle (8) or fluid needle

(15), be sure to either 1) pull

the trigger and hold while

tightening or loosening the

fluid nozzle, or 2) remove

fluid adjusting knob (18)

to relieve spring pressure

against needle collar.