Graco Gusmer H-20 Pro Instruction Manual

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2006, Graco Inc. is registered to I.S. EN ISO 9001
311392 rev.C
Operation
H-20/35 Pro™
Proportioner
For spraying polyurethane foam and polyurea coatings.
Not for use in explosive atmospheres.
See page 3 for model information, including
maximum working pressure.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
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Contents
2311392C
Contents
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . 6
Flushing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . 7
Component Identification . . . . . . . . . . . . . . . . . . . . 8
Initial Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Main Power Installation . . . . . . . . . . . . . . . . . . . 14
Lubrication System Set-up . . . . . . . . . . . . . . . . 15
Material Supply Connections . . . . . . . . . . . . . . . 16
Heated Hose Installation . . . . . . . . . . . . . . . . . . 16
Air Purge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Hose Power Control System . . . . . . . . . . . . . . . 19
Digital Temperature Controllers . . . . . . . . . . . . . 20
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Daily Start-up Procedure . . . . . . . . . . . . . . . . . . 21
Daily Shutdown Procedure . . . . . . . . . . . . . . . . 22
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 24
Graco Information . . . . . . . . . . . . . . . . . . . . . . . . . 24
Related Manuals
For Repair instructions and parts, see manual 311393.

Models
311392C 3
Models
Part No.,
Series Model
Maximum Working
Pressure
psi (MPa, bar) Voltage Amps
Total
Heater
Watts
295500, A H20 Pro 2000 (13.8, 138) 230V, 60 Hz, 1 phase 100 12000
295501, A H20 Pro 2000 (13.8, 138) 230V, 60 Hz, 3 phase 60 12000
295502, A H20 Pro 2000 (13.8, 138) 230V, 60 Hz, 3 phase 74 18000
295503, A H20 Pro 2000 (13.8, 138) 380V, 60 Hz, 3 phase 48 12000
295504, A H20 Pro 2000 (13.8, 138) 380V, 60 Hz, 3 phase 62 18000
295505, A H20 Pro 2000 (13.8, 138) 460V, 60 Hz, 3 phase 30 12000
295506, A H20 Pro 2000 (13.8, 138) 460V, 60 Hz, 3 phase 37 18000
295507, A H25 Pro 2500 (17.2, 172) 230V, 60 Hz, 1 phase 100 12000
295508, A H25 Pro 2500 (17.2, 172) 230V, 60 Hz, 3 phase 60 12000
295509, A H25 Pro 2500 (17.2, 172) 230V, 60 Hz, 3 phase 74 18000
295510, A H25 Pro 2500 (17.2, 172) 380V, 60 Hz, 3 phase 48 12000
295511, A H25 Pro 2500 (17.2, 172) 380V, 60 Hz, 3 phase 62 18000
295512, A H25 Pro 2500 (17.2, 172) 460V, 60 Hz, 3 phase 30 12000
295513, A H25 Pro 2500 (17.2, 172) 460V, 60 Hz, 3 phase 37 18000
295514, A H35 Pro 3500 (24.0, 240) 230V, 60 Hz, 1 phase 100 12000
295515, A H35 Pro, 104 size 2800 (19.3, 193) 230V, 60 Hz, 1 phase 100 12000
295516, A H35 Pro 3500 (24.0, 240) 230V, 60 Hz, 3 phase 60 12000
295517, A H35 Pro, 104 size 2800 (19.3, 193) 230V, 60 Hz, 3 phase 60 12000
295518, A H35 Pro 3500 (24.0, 240) 230V, 60 Hz, 3 phase 74 18000
295519, A H35 Pro, 104 size 2800 (19.3, 193) 230V, 60 Hz, 3 phase 74 18000
295520, A H35 Pro 3500 (24.0, 240) 380V, 60 Hz, 3 phase 48 12000
295521, A H35 Pro 3500 (24.0, 240) 380V, 60 Hz, 3 phase 62 18000
295522, A H35 Pro 3500 (24.0, 240) 460V, 60 Hz, 3 phase 30 12000
295523, A H35 Pro 3500 (24.0, 240) 460V, 60 Hz, 3 phase 37 18000

Warnings
4311392C
Warnings
The following general warnings are for the setup, use, grounding, maintenance, and repair of this equipment. Addi-
tional, more specific warnings may be found throughout the body of this manual where applicable. Symbols appear-
ing in the body of the manual refer to these general warnings. When these symbols appear throughout the manual,
refer back to these pages for a description of the specific hazard.
WARNING
ELECTRIC SHOCK HAZARD
Improper grounding, setup, or usage of the system can cause electric shock.
• Turn off and disconnect power cord before servicing equipment.
• Use only grounded electrical outlets.
• Use only 3-wire extension cords.
• Ensure ground prongs are intact on sprayer and extension cords.
• Do not expose to rain. Store indoors.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read MSDS’s to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
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
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.

Warnings
311392C 5
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 fire extinguisher in the work area.
PRESSURIZED ALUMINUM PARTS HAZARD
Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids
containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical
reaction and equipment rupture, and result in death, serious injury, and property damage.
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 Graco
(ASM) replacement parts only.
• Do not alter or modify equipment.
• Use equipment only for its intended purpose. Call your Graco 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.
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.
BURN HAZARD
Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe
burns, do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.
WARNING

Pressure Relief Procedure
6311392C
Pressure Relief
Procedure
1. Select Park on Pump Control Switch.
2. Turn off feed pumps.
3. Trigger gun to relieve pressure.
4. Close gun inlet valves.
5. Close fluid supply inlet valves.
Flushing
• Flush out old fluid with new fluid, or flush out old
fluid with a compatible solvent, such as toluene,
naptha, or mineral spirts before introducing new
fluid.
• Use lowest possible pressure when flushing.
• To flush entire system, circulate through gun fluid
manifold (with manifold removed from gun).
• Always leave some type of fluid in system. Do not
use water.
Flush equipment only in a well-ventilated area. Do not
spray flammable fluids. Do not turn on heaters while
flushing with flammable solvents.
Only use flush solvents that are compatible with fluo-
roelastomer seals. Non-compatible solvents will dam-
age seals and cause hazardous conditions, such as
high pressure leaks and pressure switch failure.

Typical Installation
311392C 7
Typical Installation
FIG. 1: H-20/35 Proportioner Typical Installation
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Component Identification
8311392C
Component Identification
FIG. 2: Component Identification - Main Components
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Component Identification
311392C 9
1Hydraulic Pressure Control
Pressure control knob is factory-set (full clockwise)
to maximum rated hydraulic pressure. To decrease
hydraulic pressure, turn knob counterclockwise
(knob will stop after approximately 2 turns). To
return to maximum pressure, turn knob clockwise
until it stops. (See FIG. 3.)
2B- (Resin) Proportioning Pump
Draws in and dispenses a fixed volume of resin
material for delivery to mixing chamber of spray gun
or pour head.
3B- (Resin) Pressure Gauge
Indicates pressure in resin proportioning system.
4B- (Resin) Over-Pressure Safety Switch
Factory set to turn off hydraulic drive system when
resin proportioning pump exceeds safety switch
operating pressure limit. Restarts when pressure
drops below limit.
5A- (Isocyanate) Proportioning Pump
Draws in and dispenses a fixed volume of
isocyanate material for delivery to mixing chamber
of spray gun or pour head.
6A- (Isocyanate) Pressure Gauge
Indicates pressure in isocyanate proportioning
system.
7A- (Isocyanate Over-Pressure Safety Switch
Factory set to turn off hydraulic drive system when
isocyanate proportioning pump exceeds safety
switch operating pressure limit. Restarts when
pressure drops below limit.
8B- (Resin) Inlet Supply Ball Valve
Allows delivery of resin to proportioning unit.
9A- (Isocyanate) Inlet Supply Ball Valve
Allows delivery of isocyanate to proportioning unit.
10 Hydraulic Pressure Gauge
Indicates pressure in hydraulic drive system.
11 Hydraulic Tank Level Gauge
Shows level and temperature of hydraulic fluid in
tank.
12 Lube Pump System (Iso side only)
Continuously circulates pump lube to prevent
crystallization of isocyanate on pump shaft.
13 Hydraulic Directional Valve
Controls direction of hydraulic flow.
14 Hose Heat Connector
Connects power to heated hoses.
15 FTS Harness
Carries electrical signal from FTS sensor in
isocyanate hose to digital hose temperature
controller.
16 A- (Isocyanate) Primary Heater
Heats isocyanate to required dispensing
temperature.
17 B- (Resin) Primary Heater
(Located behind cover) Heats resin to required
dispensing temperature.
18 Inlet Pressure Gauge
(Both sides) Indicates chemical supply pressure at
proportioner inlet.
19 Inlet Temperature Gauge
(Both sides) Indicates chemical supply temperature
at proportioner inlet.
FIG. 3: Hydraulic Pressure Adjustment
4)'(4%.
,//3%.
Control
Knob

Component Identification
10 311392C
20 Main Power Disconnect
Controls power to all circuits. Must be ON for any
function of proportioning unit to operate. Lock
disconnect in OFF position during machine
maintenance.
21 Main Power Light (White)
Illuminates when main disconnect switch is in ON
position and control power transformer is
operational.
22 Control Power Switch
Controls120 VAC control power circuit. In ON
position, amber light within switch illuminates.
In OFF position, all machine operation stops
including motion and heating.
23 Emergency Stop Switch
Interrupts units control power circuit to stop all
motion and heating. Switch mechanically locks in
stop position. Turn switch clockwise to reset and
restore normal operation.
24 Motor Control Switch
Controls power to electric motor circuit. In ON
position, green light within switch illuminates and
hydraulic oil begins circulating.
25 Counter
Records cycle count of proportioning pumps. One
cycle equals two strokes (one in each direction).
FIG. 4: Component Identification - Front Controls
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29 31 33 27 21
23
22
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263230
28
Incoming power leads from main electrical source
remain energized when main power disconnect is off.
To fully de-energize the electrical console, switch off
and lock out incoming power at source.