Magnum Venus Plastech GMX-2000 User Manual

GRANIT COAT GUN

INTERNAL MIX

GMX-2000

MAGNUM VENUS PLASTECH
GRANITE COAT GUN REPAIR MANUAL REV: 3/29/2007

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TABEL OF CONTENTS:

1. EQUIPMENT SAFTY

2. DISASSEMBLY OF GRANITE COAT GUN

3. ASSEMBLY OF GRANIT COAT GUN

4. PARTS DRAWINGS

5. TROUBLE SHOOTING

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EQUIPMENT SAFETY

Injection Hazard

• DO NOT POINT THE GUN AT ANY PERSON

• NEVER LOOK AT THE GUN FROM THE FRONT (NOZZLE END)

• NEVER trigger an airless gun while it is aimed at a person. The hydraulic pressure

may inject fluid into the flesh, causing injury or death. If the fluid penetrates the
skin it WILL cause serious injury. Clothing, such as gloves will NOT provide
protection. The system is capable of fluid pressure high enough to cause a LETHAL
INJECTION.

• TREAT THE APPLICATOR AS YOU WOULD A LOADED WEAPON.

Before applying pressure to the system, ALWAYS:

• Follow the manufacturer’s operating instructions and maximum pressure

recommendations.

• Secure the trigger in the OFF position and check all pressure connections.

• Use grounded, high pressure fluid lines.

• Check that the pump is properly grounded.

Before disassembly of ANY part of the pressure system (including the applicator or its
nozzle) ALWAYS:

• Shut the pump OFF.

• Discharge the residual fluid and pressure from the applicator.

• Secure the trigger in the OFF position.

Follow these same three procedures anytime that operation is discontinued.
Do NOT undertake any of the following until pressure is relieved from the entire system:

• Loosen or remove the nozzle.

• Disassemble any part of the applicator.

• Loosen or disconnect any fluid line fittings.

• Disassemble any part of the pump.

Be sure that the power to the pump is OFF before undertaking ANY repair, maintenance
or adjustment.

If it is necessary to adjust or clean the nozzle on site, be sure that it is aimed away from
all personnel so that it may discharge safely if there is residual pressure in the system.

Do NOT use any replacement part that does not meet the manufacturer’s specifications.
Correct packing or valve seal leaks IMMEDIATELY.
Frequently check the condition of all pressurized components, especially fluid lines.

Replace worn lines and parts before they fail.
If nozzle clogging occurs frequently, use a fluid filter with proper mesh size.

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PUMPING SYSTEM SAFETY INSTRUCTIONS

Use MVP replacement parts to assure compatible pressure rating. Read ALL warning
and safety instructions carefully before operation of this unit. Heed all warnings.

WARNING: Never allow any part of the human body to come in front of, or in

direct contact with, the material outlet. Accidental operation of the pump could cause
an injection into the flesh. If injection occurs, medical aid must be immediately
obtained from a physician.

Component Rupture: This unit is capable of producing high fluid pressure as stated on
the pump model plate. To avoid component rupture, and possible injury, do not exceed
75 cycles per minute or operate at an air inlet pressure greater than 150 PSI (10 bar).

Servicing: Before servicing, cleaning or removing any component, ALWAYS disconnect
or shut off power source and carefully relieve all fluid pressure from the system.

CAUTION: When pumping, flushing or recirculating volatile solvents, the area must be
adequately ventilated.

CAUTION: Materials and solvent being pumped must be compatible with the parts of
the pump that becomes wetted when in contact with material or solvent. Wetted parts

consist of the following: stainless steel, copper, brass, steel, gray iron, leather, Teflon
and Vellumoid.

CAUTION: Keep solvents away from heat, sparks and open flames. Keep containers
closed when not in use.

Prevent Static Sparking: If static sparking occurs, fire or explosion could result. The
pump, dispensing valve, and containers must be grounded when handling flammable
fluids such as solvents, paints, lacquers, etc., and wherever discharge of static
electricity is a hazard.

Use grounded hoses (static wire) and be sure the object being serviced is grounded if it
can produce a static charge.

Continuity (a good static wire connection) of a hose can be checked by using an
ohmmeter. Place one probe on one hose fitting and the other probe on the other hose
fitting, continuity or proper grounding through hose is good when a reading is obtained
on the ohmmeter.

Air and Lube Requirements: Excessive air pressure will shorten the life of the pump.
Do not operate pump above recommended maximum air pressure. If necessary, an air
regulator should be installed to maintain the desired pressure when the pump is in
operation.

Filtered and oiled air will allow the pump to operate more efficiently and yield a longer
life to operating parts and mechanisms.

Keep oiler supplied with MVP Pump Motor Oil. A filter capable of filtering particles
larger than 50 microns should be used with an oiler.

Maintenance: If the pump is to be inoperative for a lengthy period of time (even for a
few hours) disconnect air and relieve all pressure from system.

Periodically flush pump with a solvent that is compatible with the material being
pumped. Pour a little throat seal lubricant into the solvent cup to keep upper packings

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pliable and to keep material drag-thru soft. Material drag-thru that is allowed to harden,
will score the piston rod. This will create excessive leakage and rapid packing wear.

Disassembly should be done on a clean work bench with clean cloths to keep parts
clean.

If replacement parts are necessary, consult Parts List for identification.
Before assembling, lubricate parts where required. When assembling O-rings, or parts

adjacent to O-rings, care must be exercised to prevent damage to O-ring and O-ring
groove surfaces.

If you have any questions about safety or procedures, contact your Magnum Venus
Products’ representative.

CAUTION: Materials and solvent being pumped must be compatible with the parts of
the pump that becomes wetted when in contact with material or solvent. Wetted parts

consist of the following: stainless steel, copper, brass, steel, gray iron, leather, Teflon
and Vellumoid.

CAUTION: Keep solvents away from heat, sparks and open flames. Keep containers
closed when not in use.

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Important safety information –

HAZARD

CAUSE

SAFEGUARD

Fire

Solvent and coatings can be highly
flammable or combustible,
especially when sprayed.

Adequate exhaust must be provided to
keep air free of accumulations of
flammable vapors.
Smoking must NEVER be allowed in the
spray area.
Fire extinguishing equipment must be
present in the spray area.

Solvent

During cleaning and flushing,
solvents can be forcefully expelled
from fluid and air passages. Some
solvents can cause eye injury.

Wear eye protection.

Inhaling Toxic
Substances

Certain materials may be harmful if
inhaled or if there is contact with
skin.

Follow the requirements of the Material
Safety Data Sheet supplied by your
coating material manufacturer.
Adequate exhaust must be provided to
keep the air free of accumulations of toxic
materials.

Explosion Hazard –
Incompatible Materials

Halogenated hydrocarbon solvents
(for example; Methylene chloride
and 1,1,1-Thrichloroethane) can
chemically react with aluminum.
The chemical reaction caused by
these solvents reacting with
aluminum can become violent and
lead to an equipment explosion.

Guns with Stainless Steel internal
passageways may be used with these
solvents. However, aluminum is widely
used in other spray application equipment
– such as material pumps, regulators,
valves & cups. Check all equipment items
before use and make sure they can also
be used safely with these solvents. Read
the label or data sheet for the material you
intend to spray. If in doubt as to whether
or not a coating or cleaning material is
compatible, contact your material
supplier.

General Safety

Improper operation or maintenance
of equipment.

Operators should be given adequate
training in the safe use & maintenance of
the equipment (in accordance with the
requirement of NFPA-33 Chapter 15).
Users must comply with all local &
national codes of practice and insurance
company requirements governing
ventilation, fire precaution, operation,
maintenance and house keeping. These
are OSHA Section 1910.94 and 1910.107
and NFPA-33. Risk is reduced by avoiding
or lessening factors 1-7.

All equipment must be grounded for static electricity in accordance with NFPA-77. Be sure to relieve all
pressure from system before performing any maintenance. Spray equipment shall be used in spray areas in
accordance with NFPA, OSHA and Country/State/local requirements.

The below potential hazards may cause an injury or loss of life

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WARNING

Static Spark

Can Cause explosion resulting severe
injury or death.

Ground pump and pumping
system

Injection Hazard

Any material injected into flesh can cause
severe injury or death.

Keep body parts away from
outlet device. If an injection
occurs, immediately obtain
medical attention.

Hazardous pressure

Sudden pressure release can cause
severe injury or death.

Pumping system can remain
pressurized when pump is not
operating.

Excessive inlet
pressure

Can cause severe injury or death

Do not exceed the maximum
inlet pressure as stated on the
model plate.

INSPECTION AND MAINTENANCE OF UNIT

1) Check solvent cup to be sure it is 1/3 full.

2) Check catalyst and material levels.

3) Inspect material spray tip and o-ring. Replace if necessary.

4) Inspect catalyst tip assembly and o-rings. Replace if necessary.

5) Inspect tip pin o-rings on front of gun head and replace if nicked or worn.

6) Assemble catalyst tip and material tip onto gun.

7) Lubricate threads on retaining ring and assembly onto gun.

8) Inspect hose assemblies and connections for leaks and wear and tear. Replace if
necessary. Do not wait until hose is so worn that it may burst.

9) Check roving quantity (if applicable).

10) Inspect and replace if necessary:
a) Chopper Blades
b) Anvil Sleeve
c) Cutter Head Bearing
d) Idler Bearing

11) Inspect and adjust if necessary:
a) Cutter head to Anvil Sleeve tension
b) Idler Bearing to Anvil Sleeve tension
c) Check Chopper position for most efficient disbursement of chop into spray

pattern.

12) Oil Cutter assembly Air Motor with Magnum Air Motor Oil as necessary (normally 2 –
3 drops daily, depending on usage).