Graco M12xxx, M02xxx, M04xxx, M34xxx, M07xxx User Manual
...
Instructions/Parts
®
NXT
For use with high performance finishing and coating pumps in hazardous or
non-hazardous locations. For professional use only.
Models M02xxx, M04xxx, M07xxx, M12xxx, M18xxx, and M34xxx
100 psi (0.7 MPA, 7.0 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this
manual. For complete warnings and
instructions see your pump or package
manual. Hazard symbols refer to specific
procedure risks. Save all instructions.
See page 3 for model information.
Air Motor
312796R
EN
ti11838a
Related Manuals
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Component Identification . . . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Preventive Maintenance Schedule . . . . . . . . . . . 9
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 9
Repair Air Valve . . . . . . . . . . . . . . . . . . . . . . . . . 9
Replace Pilot Valves . . . . . . . . . . . . . . . . . . . . . 13
Repair Air Motor . . . . . . . . . . . . . . . . . . . . . . . . 13
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Air Motor Parts — All Models . . . . . . . . . . . . . . . . 17
Air Valve Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Kits and Accessories . . . . . . . . . . . . . . . . . . . . . . 21
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Mounting Hole Diagrams . . . . . . . . . . . . . . . . . . . 23
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 26
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 26
Related Manuals
Manual Description
312792 Merkur Displacement Pump
312793 Merkur Bellows Displacement Pump
312794 Merkur Pump Assembly
312795 Merkur Bellows Pump Assembly
312797 Merkur Spray Packages, AA and Airless,
Ambient
312798 Merkur Electrostatic Spray Packages
312799 Merkur Bellows Spray Packages, AA
and Airless
313255 Merkur Heated Spray Packages
2 312796R
Warnings
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbol refers to procedure-specific risk. Refer back
to these warnings. Additional, product-specific warnings may be found throughout the body of this manual where
applicable.
WARNING
WARNINGWARNINGWARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent
fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop
cloths (potential static arc).
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are
present.
• Ground all equipment in the work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment until
you identify and correct the problem.
• Keep a working fire extinguisher in the work area.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system component. See Technical Data in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about
your material, request MSDS forms from distributor or retailer.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
SKIN INJECTION HAZARD
High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just a
cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Do not spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
•Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
312796R 3
Warnings
WARNING
WARNINGWARNINGWARNING
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
•Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
MOVING PARTS HAZARD
Moving parts can pinch or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,
follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.
PERSONAL PROTECTIVE EQUIPMENT
You must wear appropriate protective equipment when operating, servicing, or when in the operating area
of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic fumes,
burns, and hearing loss. This equipment includes but is not limited to:
• Protective eyewear
• Clothing and respirator as recommended by the fluid and solvent manufacturer
•Gloves
• Hearing protection
4 312796R
Models
Models
Check your motor’s identification plate (ID) for the 6-digit part number of your
motor. Use the following matrix to define the construction of your motor. For
example, motor part number M04LT0 represents an air motor (M), with 400
cc displacement, a 3.5 in. piston diameter and a 2.5 in. stroke (04), low noise
exhaust (L), and DataTrak
digit (0) is unassigned.
™
monitoring with runaway protection (T). The last
ti12922a
M04 L T 0
Second and Third Digits
First Digit
M
(Air Motor)
(displacement, piston
diameter x stroke)
02
04
07
12
18
34
200 cc, 2.5 in x 2.5 in.
400 cc, 3.5 in. x 2.5 in.
700 cc, 4.5 in. x 2.5 in.
1200 cc, 6.0 in. x 2.5 in.
1800 cc, 7.5 in. x 2.5 in.
3400 cc, 7.5 in. x 4.75 in.
Fourth Digit
(Exhaust Type)
Flush pump
F*
(limited use)
Low noise
L
Fifth Digit
(Data Monitoring) Sixth Digit
N
T
P
H
None (Compatible with
DataTrak with Cycle Count)
Compatible with DataTrak
with Runaway Protection
Park - Vent valve to be
parked in down position
(compatible with DataTrak
with Cycle Count)
200 cc Motor Compatible
with Linear Sensor
ID
0
(not
assigned)
* Uses a smaller muffler. Limited use.
Do not operate the air motor without a plumbed
exhaust line or muffler installed.
Air
Motor
Part No. Series
M02LN0 C 200 2.5 2.5 (63)
M02LH0 A 200 2.5 2.5 (63)
M04LN0 D 400 2.5 3.5 (89)
M04LT0 D 400 2.5 3.5 (89)
M07LN0 D 700 2.5 4.5 (114)
M07LT0 D 700 2.5 4.5 (114)
M12FN0 D 1200 2.5 6.0 (152)
M12LN0 D 1200 2.5 6.0 (152)
M12LT0 D 1200 2.5 6.0 (152)
M12LP0 D 1200 2.5 6.0 (152)
M18LN0 D 1800 2.5 7.5 (191)
M18LT0 D 1800 2.5 7.5 (191)
M34LN0 A 3400 4.75 7.5 (191)
Displacement
(cc)
Stroke
(in.)
Piston
Diameter,
in. (mm)
DataTrak with
Linear
Low
Noise
✔✔
✔✔ ✔
✔✔ ✔
✔✔ ✔ ✔
✔✔ ✔
✔✔ ✔ ✔
✔✔ ✔
✔✔ ✔ ✔
✔✔ ✔ ✔
✔✔ ✔
✔✔ ✔ ✔
✔✔
Sensor
Compatible
✔✔
DataTrak
Cycle Count
Compatible
Runaway
Protection
Compatible
Park
(Lowers to
down
position)
312796R 5
Component Identification
Component Identification
Model M04LT0 shown
D
E
F
H
C
K
G
FIG. 1: NXT Air Motor components
Key:
AAir valve
B Air inlet, 1/4 in. npt(f) for M02xxx and M04xxx models,
1/2 in. npt(f) for M07xxx, M12xxx, and M18xxx models
C Muffler (M18xxx models have a second muffler, see inset.
Model M12Fxx has smaller mufflers; not shown.)
D Pilot valve
E Manifold
F Solenoid release button (for DataTrak models with
runaway protection)
G Ground screw
H Solenoid bracket (for DataTrak models with runaway
protection)
J Solenoid (for DataTrak models with runaway protection)
K Reed switch (DataTrak models)
J
M18xxx models have
two mufflers (C).
A
B
ti12645a
6 312796R
Component Identification
Grounding
See FIG. 2. Verify that the ground screw (GS) is
attached and tightened securely to the air motor. Connect the other end of the ground wire (U) to a true earth
ground.
GS U
FIG. 2: Ground wire
ti12914a
Accessories
Bleed-type master air valve
Trapped air can cause the pump to cycle unexpectedly,
which could result in serious injury from splashing or
moving parts.
• Required in your system to relieve air trapped
between it and the air motor when the valve is
closed.
• Be sure the valve is easily accessible from the
pump and located downstream from the air regulator.
Air regulator
Adjusts air pressure to the motor and fluid outlet pressure of pump. Locate it close to the pump. Install a
gauge to read air pressure.
Air filter
Removes harmful dirt and moisture from compressed air
supply.
312796R 7
Troubleshooting
Troubleshooting
Relieve the pressure before checking or servicing
the equipment.
Problem Cause Solution
NOTICE
Check all possible problems and causes before disassembling the pump.
Air motor will not run. DataTrak solenoid engaged (DataTrak
models with runaway protection).
Damaged air valve (17). Replace or service air valve (17).
Damaged pilot valve (19). Replace pilot valves (19). See page
Air continuously exhausting
around air motor piston rod.
Air continuously exhausting from
muffler.
Air motor “bounces” at top of
stroke.
Air motor “bounces” at bottom of
stroke.
Icing inside motor. Air motor operating at high pressure
Damaged u-cups (3, 43). Replace piston rod u-cups (3, 43).
Damaged air valve plate (105) or cup
(112).
Damaged bottom pilot valve. Replace bottom pilot valve (19). See
Damaged top pilot valve. Replace top pilot valve (19). See
or high cycle rate.
Push solenoid release button (118).
Remove solenoid and manually
move pin.
See page 9.
13.
See page 13.
Replace or service air valve (17).
See page 9.
page 13.
page 13.
Reduce pressure, cycle rate, or duty
cycle of motor.
Reduce dew point of compressed air
in moisture coalescing filter.
8 312796R
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