Pentech PSG1003 Manuale utente

PENTECH, INC.

Operating Manual –Parts Manual

July, 2008

Issue 4

Plural Component

Impingement Mixing

Mechanical Purge Spray Gun

Palm Spray Gun

Pentech, Inc.

7256 21st Street East

Sarasota, FL 34243

Phone: 941-739-2700

Fax: 941-739-2722

www.pentech.us

Contents

CONTENTS and LIST of FIGURES 2

TECHNICAL DATA, PALM SPRAY GUN 3

OVERALL VIEW, PALM SPRAY GUN 4

PALM SPRAY GUN PACKAGE LIST 5

OPTIONAL ITEMS 5

SAFETY INFORMATION and WARNINGS 6

GENERAL OPERATION OVERVIEW 7

THEORY of OPERATION 8

PRESSURE BALANCE 9

IMPORTANT TIPS for OPERATION 9

METHOD OF ATTACHING PALM GUN COUPLING 10

BLOCK/WHIP HOSE TO HEATED HOSE ASSEMBLY 11

INITIAL GUN START-UP 12

NORMAL GUN START-UP 13

PALM GUN ROUND PATTERN MIX MODULE DETAILS 14

PALM GUN FLAT PATTERN MIX MODULE DETAILS 15

MODULE / PCD CHART 16

SPRAYING and NORMAL OPERATION 17

GUN SHUT DOWN and CLEANING 18

TROUBLESHOOTING 19

PARTS IDENTIFICATION SECTION 20

REPAIR and TOOL KIT LIST 21

HANDLE ASSEMBLY, EXPLODED VIEW 22

HANDLE ASSEMBLY, PARTS LIST 23

MODULE / PCD CHART 22

AIR CYLINDER ASSEMBLY, EXPLODED VIEW 24

AIR CYLINDER ASSEMBLY, PARTS LIST 25

COUPLING BLOCK / WHIP HOSE ASSEMBLY, EXPLODED VIEW 26

COUPLING BLOCK / WHIP HOSE ASSEMBLY, PARTS LIST 27

FLUSH TANK ASSEMBLY, EXPLODED VIEW 28

FLUSH TANK ASSEMBLY, PARTS LIST 29

PENTECH WARRANTY 30

PENTECH, INC. INFORMATION 30

List of Figures

PALM GUN OVERALL VIEW 4

ATTACHING PALM GUN WHIP HOSE ASSEMBLY TO HEATED HOSE 11

PALM GUN ROUND PATTERN MIX MODULE DETAILS 14

PALM GUN FLAT PATTERN MIX MODULE DETAILS 15

HANDLE, EXPLODED VIEW 22

AIR CYLINDER, EXPLODED VIEW 24

COUPLING BLOCK / WHIP HOSE, EXPLODED VIEW 26

FLUSH TANK, EXPLODED VIEW 28

Palm Spray Gun

Technical Details

Maximum Fluid Working Pressure 3500 psi

Minimum Air Inlet Pressure 100 psi

Maximum Air Inlet Pressure 130 psi

Minimum Material Output 1lb. / min.

Maximum Material Output 6 lbs. / min.

Maximum Fluid Temperature 200 F.

Air Inlet Size ¼” npt, Quick Disconnect Nipple

A Component (ISO) Inlet Size

B Component (POLY) Inlet Size

Dimensions: Height –6”

Width –2”

Length –3 ½”

Weight 1.74 lbs.

Wetted Parts Aluminum, Stainless Steel, Carbon

Steel, Teflon, Chemically Resistant

Plastic and O-Rings

Plural Component

Air Operated

Impingement Mixing

Mechanical Purge

Trigger Paddle

Air Cylinder Assembly

Air Cap

Material Shutoff Valves

Coupling Block

Whip Hose, Air

Whip Hose, Material

Filter / Swivel Assembly

Handle

Assembly

Trigger Guard

Check Valve

Air / Safety Valve

Palm Spray Gun

Overall View

Pattern Air Control Valve

The Palm Spray Gun Package

Includes

PSG1003 Palm Spray Gun Package

Includes:

PSG2100 Palm Gun Complete

PSG5300 Coupling Block / Whip Hose Assembly, 3 Ft.

PSG9000 Tool Kit

Includes: 1 PSG9009 Nut Driver, 5/16

1 PSG9010 Combination Wrench

1 PSG9011 Pin Vise, Small

1 PSG9015 Drill Index, #61-#80

1 PSG9012 Drill Bit, 7/64” x 6”

1 PSG9014 Drill Bit, .149

PSG100 Manual, Operating and Parts Identification

Note: Palm Gun Package comes ready to spray with:

PSG9001-13 (.013 Round Pattern Mix Module)

PSG9004-24 (.024 Round Pattern Pattern Control Disc)

Optional Items

PSG8000-A Flush Tank Assembly (Recommended)

PSG7017 Adapter Fitting Assembly, (To Graco Hoses)

PSG7016 Adapter Fitting Assembly, (To Glascraft Hoses)

BD6000 Adapter Block Assembly, (To Gusmer Style Coupling Block)

BD6100 Adapter Block Assembly, (To Graco Style Coupling Block)

BD6200 Adapter Block Assembly, (To Glascraft Style Coupling Block)

Safety Information & Warnings

Before operating the Palm Gun, personnel should fully understand the contents,

recommendations, and safety notes contained in this manual.

Failure to follow these guidelines may result in severe bodily injury or damage to

equipment and property.

The safety guidelines outlined in this manual are not intended to be all inclusive.

A certain degree of knowledge of general industrial safety practices as used in

the spray applied coatings and foam industry are required to insure operator

safety.

Aluminum Parts Hazard

Do not use 1,1,1–trichloroethane, methylene chloride, or other halogenated

hydrocarbon solvents, or fluids containing these solvents in the Palm Gun. These

solvents are capable of causing a serious chemical reaction, and possible

rupture when used in pressurized aluminum equipment.

Personal Protection

The operator and personnel in the vicinity of this equipment must ensure their

personal safety by wearing:

Protective eye wear

Protective clothing and gloves

Protective breathing apparatus, supplied fresh air system, or approved

respirator.

Injection Hazard:

This equipment operates at high fluid pressure and is capable of injecting

chemicals into skin.

Do not place hands or fingers in area of spray pattern.

Never point spray gun in the direction of other personnel.

Close material supply valves before leaving spray gun unattended.

Relieve all pressure before servicing or cleaning this equipment.

If chemicals have pierced skin, seek immediate medical attention.

Chemical Materials and Fumes:

Read and understand Material Safety Data Sheet (MSDS) provided by

chemical manufacturer.

Store and dispose of waste chemicals in accordance with manufacturers

guidelines.

GENERAL OPERATION OVERVIEW

Gun Safety Devices:

The Palm Gun has three methods of putting the gun in the safe mode.

# 1. Air Safety Valve:

The gun will not trigger without air pressure to the air cylinder.

To engage the air safety valve, turn handle counterclockwise to off

position. The air valve will vent air pressure contained in the gun handle

and air cylinder.

# 2. Material Shut off Valves:

The gun will not dispense material with the A & B manual valves closed.

To engage manual valve safety, turn manual valves clockwise until closed.

# 3. Emergency Shut Off Button:

Located at the rear of the air cylinder. If air pressure to the gun is lost, this

button can be pushed in to stop material flow through the gun.

Hose Orientation:

With gun pointing away from operator, A component hose and manual valve is

on operators left. B component hose and manual valve is on operator’s right.

Air Hose connection:

Insure that air safety valve is in the closed, / safe position.

Air hose is connected by inserting male quick disconnect fitting located at end of

whip hose into female quick disconnect air fitting located in heated hose bundle.

When gun is not in use, keep air fittings free of dirt and debris.

Coupling Block:

The A & B material hoses, air hose / coupling block are connected to the gun

handle by the coupling block bolt. Ensure that the sealing o-rings are in place for

the A & B material and air passage. Before attaching the coupling block to handle,

open the air valve to blow out any dirt or debris that may be in air line.

Material Shut Off Valves:

The A & B material shut off valves control the on/off flow of material to the gun.

Do not open a manual valve unless the gun is connected, or, the coupling block

material ports are directed into a suitable container.

Theory of Operation

Pushing Trigger:

When the gun is triggered, air is directed by the trigger spool valve to the air

cylinder. This moves the valving rod rearward from the PCD, past the A and B

ports. This allows material to flow through the A and B ports in the mix module.

As A and B material enters the center of the mix module, the two streams

impinge with each other at high pressure and velocity and start the mixing action.

They then travel forward and exit through the pattern control disc (PCD / Spray

Tip) and form the spray pattern.

Releasing Trigger:

When the trigger is released, the trigger spool valve directs air to the air cylinder

which push’s the valving rod forward. This closes the A and B ports in the mix

module, and push’s the remaining mixed material in the center of the module out

through the PCD. The valving rod stops its forward travel by contacting the rear

of the PCD. At this point, all mixed material is cleared from the mix module, PCD,

and the gun is ready to be triggered again.

Orientation of Mix Module Orifices

Round Pattern

The A and B orifices in the round pattern module are offset to each other. This

offset imparts rotation to the A & B material streams in the center of the module,

which along with the round orifice in the PCD, results in a round spray pattern.

See Page 14

Fan Pattern

The A & B orifices in the fan pattern module are in line with each other as no

rotation of the A & B material streams is required for the fan pattern PCD.

See Page 15

Pressure Balance

Due to the low output capabilities of the Palm Gun, it is important to properly size

the A and B material orifices in the mix module. The chart on page 16 can serve

as a guide.

Many conditions can affect the A & B pressure balance.

1. Material viscosity difference of A & B components.

2. Material temperature,

3. Spray pressure.

4. Filter cleanliness.

5. Mix module orifice size.

When starting up the Palm Gun, the A & B mix module orifices should be drilled

out to the same size.

When spraying, the A & B gauges will be indicating back pressure caused by any

restrictions, (A & B orifice size, filters, viscosity, etc.)

The gauges may, or may not read exactly equal. This is normal.

Providing the proportioner is being supplied with an adequate amount of material,

free of air bubbles, the ratio of A to B will be correct.

A pressure difference at the gauges does not mean the gun is spraying off

ratio.

Depending on the conditions listed above, a pressure difference between the A &

B pressure gauges may be seen. Gauge readings of 500 -700 psi pressure

difference will still yield a good mix. Always test spray material to check for

proper mixing action and cure.

If further balancing of the pressures is desired, the orifice corresponding to the

higher reading gauge may be very carefully enlarged with the next larger size

drill bit. The module ports can also be enlarged equally to account for uneven

orifice wear.

Important Tips for Operation

Air cap and mating front face of gun must be very clean and free of nicks to

insure a good seal. No gasket is used here.

Air cap bolts must be tightened with a wrench until tight.

Consult your material supplier for the proper cleaning and flushing solvent to use.

Ensure that cleaning solvents do not cause swelling of o-rings.

Do not soak o-rings or mix module in solvent. Solvent may be used for cleaning,

and then dried off.

Air flow to air cap should remain on whenever material shut off valves are open.

Misting in air pattern indicates a leak at the module seat area. Tighten air cap

bolts snugly.

Do not submerge the entire gun in cleaning solvent as damage to the trigger

spool valve o-rings will result.

Lubricate air line inlet daily, 2-3 drops of air tool oil only.

Apply a light coat of wax or grease to exterior of gun daily to prevent overspray

build up.

Use only the proper sized drills for sizing module ports, or cleaning the PCD

orifice.

Attaching the Palm Gun To

The Heated Hose Assembly

Determine whether the Palm Gun whip hoses will be connected directly to the

standard 10 Ft. heated whip hose assembly with adapter fittings, or if an adapter

block will be used.

See pages 10 & 11

The use of the adapter block permits the Palm Gun and whip hose assembly to

be removed quickly from a standard coupling block. This feature allows the

applicator to switch between different types of guns, depending on the jobs

requirements. The palm gun and its coupling block / whip hose assembly can be

removed, set aside, and remain totally sealed until its next use.

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