Graco 312784D User Manual

Instructions-Parts

Part No. 15V826

312784D

Gun Flush Box Kit

Kit includes parts to install a Graco Gun Flush Box in a ProMix® 2KS or ProMix® 2KE
Proportioning System. For professional use only.

Bare Gun Flush Box is approved for use in explosive atmospheres. See manual 309227.

100 psi (0.7 MPa, 7 bar) Maximum Air Inlet Pressure

Important Safety Instructions

Read all warnings and instructions in this manual.
Save these instructions.

ENG

Related Manuals

Contents

Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Intrinsically Safe Installation . . . . . . . . . . . . . . . . 5

Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Before Installing . . . . . . . . . . . . . . . . . . . . . . . . . 5

Install the Air Flow Switch . . . . . . . . . . . . . . . . . . 6

Install the Pressure Switch . . . . . . . . . . . . . . . . . 9

Gun Flush Box Solenoid . . . . . . . . . . . . . . . . . . 10

Atomizing Air Safety Shutoff Valve . . . . . . . . . . 14

Connect the Air Tubes to the Gun Flush Box . . 14

Trigger Height Adjustment . . . . . . . . . . . . . . . . . 14

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 22

Graco Information . . . . . . . . . . . . . . . . . . . . . . . . 22

Related Manuals

See the following manuals for additional information on
the ProMix 2KS, ProMix 2KE, and Gun Flush Box Kits.

Manual Description

309227 Bare Gun Flush Box
312775 ProMix 2KS Manual System Installation
312776 ProMix 2KS Manual System Operation
312777 ProMix 2KS Manual System

Repair-Parts

312778 ProMix 2KS Automatic System Installa-

tion

312779 ProMix 2KS Automatic System Opera-

tion

312780 ProMix 2KS Automatic System

Repair-Parts
3A0868 ProMix 2KE Pump-Based Operation
3A0869 ProMix 2KE Meter-Based Operation
3A0870 ProMix 2KE Repair-Parts

2 312784D

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 symbols refer to procedure-specific risks. When
these symbols appear in the body of this manual, refer back to these Warnings. Product-specific hazard symbols and
warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNING

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.

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.

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.

312784D 3

Warnings

WARNING

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.

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.

• Always wear impervious gloves when spraying or cleaning equipment.

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 312784D

Installation

Installation

See FIG. 2 for a typical installation of the gun flush box
kit. F

IG. 2 is only a guide. Contact your Graco distributor

for assistance in designing a system to meet your appli­cation needs.

Do not bypass the gun flush box interlock sensors.
They prevent the gun flush box from operating unless
the gun is in position and the gun flush box door is
locked.

If using an electrostatic gun, shut off electrostatics
before flushing. Follow the warnings in your electro­static gun manual.

Location

Grounding

Ground the gun flush box as explained in the Gun Flush
Box manual 309227.

Before Installing

• To avoid electric shock, turn off EasyKey power
before installing.

• All electrical wiring must be done by a qualified
electrician and comply with all local codes and reg­ulations.

• Do not substitute system components as this may
impair intrinsic safety.

• Read Warnings, page 3.

Locate and mount the gun flush box as explained in the
Gun Flush Box manual 309227.

Intrinsically Safe Installation

Follow instructions in your proportioner manual.

Ventilation

Electrically interlock the spray booth air supply (J) with
ventilators, using a ventilation interlock valve (K), to pre­vent the gun flush box from operating when ventilating
fans are not operating. See F
follow all applicable air exhaust velocity codes for your
area and type of installation.

IG. 2, page 6. Check and

NOTICE

To avoid damaging circuit board when servicing, wear
Part No. 112190 grounding strap on wrist and ground
appropriately.

1. Close main air shutoff valve on air supply line and
on proportioner.

2. Shut off proportioner power. F

3. Loosen the 4 screws and remove the Fluid Station
cover.

F

IG. 1: Power Off (ProMix 2KS Shown)

IG. 1.

0 = OFF

TI12657a

312784D 5

Installation

F

E

D

B

Key:

GFB Gun Flush Box (see FIG. 11 for detail of air line connec-

tion fittings A, C, P, S)
A Air Line from GFB to Pressure Switch Input
B Fluid Supply to Gun
C Air Line from GFB to GFB Solenoid Output
D Atomizing Air Supply
E Gun Air Safety Shutoff Valve (see page 14)

GFBHD

G

C

S

F Fluid Station
GSpray Gun
H Main Air Supply Line
P Air Line from GFB to Fluid Station Main Air Manifold
S Air Line from GFB to Gun Air Safety Shutoff Valve Pilot

Por t

P

A

TI15100a

F

IG. 2: Typical Installation (ProMix 2KS System Shown)

Install the Air Flow Switch

2. See F

IG. 3 for the ProMix 2KS or FIG. 4 for the Pro-

Mix 2KE. Position the air flow switch (102) as
shown. Install the nipple (103) and elbow (104).
Assemble the bulkhead fitting (105) as shown, to
secure the switch to the side of the panel.

3. Route the air flow switch wires through the desig-

NOTE: Each gun flush box includes one air flow switch
(AFS). Install the air flow switch as shown in F

IG. 3. If

you are using a second gun flush box, install its air flow

nated strain relief (K). Connect AFS#1 wires to pins
1 and 2. ProMix 2KS only: Connect AFS#2 wires (if
used) to pins 3 and 4.

switch next to the first switch, as shown.

1. Follow Before Installing, page 5.

6 312784D

Installation

4. See FIG. 2. Connect a 1/4 npt atomizing air line (D)
from the AFS outlet nipple (103) to the air inlet port
of the air safety shutoff valve (E, also see F

IG. 10).

Connect another length of atomizing air line (D)
from the safety valve outlet port to the gun (G) air
inlet.

Install AFS#2 here
(if used).

L

105

103

TI13350a

102

5. See F

1

IG. 3 for the ProMix 2KS or FIG. 4 for the Pro-

Mix 2KE. Install an appropriate air inlet fitting (L) into
the bulkhead fitting (105). The air inlet fitting must
be 1/4 npt(m) on the bulkhead end. The other end
must be sized to mate with your main air supply line.

K

2

102

104

105

Install Air Flow Switch on Back of Fluid Station Panel

1

User supplied air inlet fitting (L) must be 1/4
npt(m) to mate with bulkhead fitting (105).

2

Route AFS wires through this strain relief (K)
to Fluid Station Control Board.

3

Connect AFS#1 wires to J1 pins 1 and 2 on
Fluid Station Control Board.

4

Connect AFS#2 wires to J1 pins 3 and 4 on
Fluid Station Control Board.

Back View of Fluid Station Panel

J1

1

3

2
3

4

4

AFS Wire Connections at

Fluid Station Control Board

TI15099a

TI13347a

F

IG. 3: Installing the Air Flow Switch on a ProMix 2KS

312784D 7

Installation

1

User supplied air inlet fitting (L) must be 1/4
npt(m) to mate with bulkhead fitting (105).

2

Connect AFS#1 wires to pins 1 and 2.

3

Connect AFS#2 wires to pins 7 and 8.

Install GFB Pressure
Switch (107) here

102

103

L

1

105

104

TI16428a

Install Air Flow Switch in Control Box

AFS/PS Wires Schematic

1 142

SIG

COMMON

AFS #1

ti15730a

FIG. 4: Installing the Air Flow Switch and Pressure Switch on a ProMix 2KE

78

SIG

GFB PS/
AFS #2

COMMON

8 312784D

Installation

Install the Pressure Switch

NOTE: Each gun flush box includes one pressure switch

(PS). Install the pressure switch as shown in F
the ProMix 2KS or F

IG. 4 for the ProMix 2KE. If you are

using a second gun flush box, install its pressure switch
next to the first switch, as shown.

1. Follow Before Installing, page 5.

IG. 5 for

2. Position the pressure switch (107) as shown. Install
the bulkhead fitting (108) to secure the switch to the
side of the panel. Install the tubing adapter (118) in
the bulkhead fitting.

3. Route the pressure switch wires through the desig­nated strain relief (K). Connect PS#1 wires to pins 7
and 8. Connect PS#2 wires (if used) to pins 9 and

10.

4. Connect a 5/32 in. (4 mm) OD air tube from the tube
adapter (118) to the A port on the bottom of the gun
flush box. See F

IG. 2 and FIG. 11.

118

108

K

TI14162a

Install PS#2 here (if used).

107

Install Pressure Switch on Back of Fluid Station Panel

J1

7

3

8
9

4

10

PS Wire Connections at

Fluid Station Control Board

TI13347a

Back View of Fluid Station Panel

2

Route PS wires through this strain relief (K) to
Fluid Station Control Board.

3

Connect PS#1 wires to J1 pins 7 and 8 on
Fluid Station Control Board.

4

Connect PS#2 wires to J1 pins 9 and 10 on
Fluid Station Control Board.

2

107

TI15099a

FIG. 5: Installing the Pressure Switch on a ProMix 2KS

312784D 9

Installation

Gun Flush Box Solenoid

NOTE: Each gun flush box includes one solenoid (109).

Install the solenoid in the fluid station panel, as shown in
F

IG. 6. If you are using a second gun flush box, install its

solenoid next to the first solenoid, as shown.

1. Follow Before Installing, page 5.

2. Install the solenoid valve (109) in the correct posi­tion as shown in F

IG. 6 for the ProMix 2KS or FIG. 7

for the ProMix 2KE. Secure with the two screws
supplied.

3. Connect the GFB#1 solenoid wires as shown in F
6 for the ProMix 2KS or F
Also see the Electrical Schematic (F

IG. 7 for the ProMix 2KE.

IG. 8 or FIG. 9).

4. Remove the plug from the solenoid manifold and
install the tube fitting connector (110).

IG.

Bottom View of

Solenoid Manifold

110 (GFB#1)

TI13862a

110 (GFB#2)

34

1

J8

Gun Flush Box

Solenoid Locations

109 (GFB#1)

109 (GFB#2)

3

Connect GFB#1 solenoid wires
to J8 pins 3 (red) and 4 (black) on
Fluid Station Control Board.

4

Connect GFB#2 solenoid wires
to J8 pins 1 (red) and 2 (black) on
Fluid Station Control Board.

TI12652a

FIG. 6: Installing Gun Flush Box Solenoid Valve on a ProMix 2KS

10 312784D

GFB Wires Schematic

Installation

Install solenoid here.

ti15730a

FIG. 7: Installing the Gun Flush Box Solenoid Valve on a ProMix 2KE

1 14

910

BLACK

RED

GFB
SOLENOID

312784D 11

Installation

FLUID PANEL CONTROL BOX

FLUID
PANEL
CONTROL
BOARD

J10

1
2
3

+12VDC I/S
COM
SHIELD

Gun Flush Box

Solenoid Connections

Air Flow Switch

Connections

FO OUT
(BLU)

Pressure Switch

FO IN

Connections

(BLK)

J4

J6

J15

J14

J13

MH2

HAZARDOUS AREA

1
2
3

J3

4
5
6

1
2
3

J12

4
5
6

UNUSED

1

UNUSED

2

UNUSED

3

UNUSED

4

UNUSED

5

UNUSED

6

1
2
3

J5

4
5
6

3
2

J11

5
4
1

3
2

J7

5
4
1

6
5
4

J8

3
2
1

6
5
4
3
2
1

6
5
4
3
2
1

6
5
4

J9

3
2
1

1
2
3
4
5
6

J1

7
8
9
10

6' STD.
(3'-100' OPTIONS)

50' STD.

GRD (BLK)
+12VDC (RED)
SHIELD (BARE)

CAN H (WHT)

CAN L (BLU)

BLACK
RED
BLACK
RED
BLACK
RED

BLACK
RED
BLACK
RED
BLACK
RED

BLACK
RED
BLACK
RED
BLACK
RED

BLACK
RED
BLACK
RED
BLACK
RED

SIG
COM
SIG
COM
SIG
COM
SIG
COM
SIG
COM

PWR (RED)
COM (BLACK)
SIG (WHITE)
SHIELD/GRN
PWR (RED)
COM (BLACK)
SIG (WHITE)
SHIELD/GRN
PWR (RED)
COM (BLACK)
SIG (WHITE)
SHIELD/GRN

GROUND
TERMINAL

MANIFOLD

MANIFOLD

3X CABLE

(10')/
(40')

GRD (BLK)
+12VDC (RED)
SHIELD (BARE)
CAN H (WHT)
CAN L (BLU)

BOOTH

3

CONTROL

2

BOARD

5
4
1

DUMP B

GFB #1

GFB #2

DUMP A

NOT USED

PURGE C

PURGE B

PURGE A

NOT USED

NOT USED

DOSE B

DOSE A

AIR FLOW SWITCH 1

AIR FLOW SWITCH 2

SOLVENT FLOW SWITCH

GFB 1 PRESSURE SWITCH

GFB 2 PRESSURE SWITCH

FLOW METER A

FLOW METER B

FLOW METER SOLVENT

12 VDC

3-WAY SOLENOID

12 VDC

4-WAY SOLENOID

V/P ANALOG OUT (WHT)
PRESS. (GRN)
+12 V (RED)
GND (BLK)
CHASSIS (BARE)

MANIFOLD

CLR 8

CLR 7

CLR 6

CLR 5

CLR 4

CLR 3

CLR 2

CLR 1

SOL CLR

MANIFOLD

CLR 21

CLR 20

CLR 19

CLR 18

CLR 17

CLR 16

CLR 15

CLR 14

CLR 13

I.S. METERS

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

+12VDC

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

COM

J1

1
2
3
4
5

J7/J11

J7/J11

J7/J11

FLOW
CONTROL
BOARD

1 4 5 2 3

COLOR
BOARD 1
(COLORS
1 THRU 12,
CATALYST
1 THRU 4)

1
2
3
4

J8

5
6

1
2
3

J15

4
5
6

1
2
3

J14

4
5
6

1 4 5 2 3

1 4 5 2 3

COLOR
BOARD 2
(COLORS
13 THRU 30)

1
2
3

J8

4
5
6

1
2
3

J15

4
5
6

1
2
3

J14

4
5
6

J2

1
2

J4
1
2
3
4
5

J9

J16

J10

J9

J16

J10

SIG (RED)
COM (BLK)

+ PRESSURE (GRN)
COM (RED)
EX+ (WHT)

- PRESSURE (BLK)
SHIELD (BARE)

6

COM

5

+12VDC

4

COM

3

+12VDC

2

COM

1

+12VDC

COM

6

+12VDC

5

COM

4

+12VDC

3

COM

2

+12VDC

1

COM

6

+12VDC

5

COM

4

+12VDC

3

COM

2

+12VDC

1

6' STD.

6

COM

5

+12VDC

4

COM

3

+12VDC

2

COM

1

+12VDC

COM

6

+12VDC

5

COM

4

+12VDC

3

COM

2

+12VDC

1

COM

6

+12VDC

5

COM

4

+12VDC

3

COM

2

+12VDC

1

MANIFOLD

MANIFOLD

TECNO
V/P

FLUID
PRESS.
SENS.

CLR 9

CLR 10

CLR 11

CLR 12

CAT 4

CAT 3

CAT 2

CAT 1

SOL CAT

CLR 22

CLR 23

CLR 24

CLR 25

CLR 26

CLR 27

CLR 28

CLR 29

CLR 30

FIG. 8: System Electrical Schematic (ProMix 2KS)

12 312784D

Installation

2
3
4
5

J1

1

CAN_L
+V_CAN

V_CAN_RTN
CAN_H
SHIELD

J2

CAN_L
+V_CAN
V_CAN_RTN
CAN_H
SHIELD

J3

CAN_L
+V_CAN
V_CAN_RTN
CAN_H
SHIELD

J6

1

2
3
4
5

USER INTERFACE

J1

MODULE

1

2
3
4
5
6
7
8
9

10
11
12
13
14

J4

1

2
3
4
5
6
7
8
9

J2

1

2

Solenoid Connections

3
4

Gun Flush Box

Air Flow Switch

Connections

J7

1

2
3
4
5

CAN_L
+V_CAN
V_CAN_RTN
CAN_H
SHIELD

UNUSED
UNUSED
UNUSED
UNUSED
UNUSED

SOLENOID

4-WAY

12 VDC

SOLENOID

3-WAY

12 VDC

FLOW METER A

AIR FLOW SWITCH 1

P3

1

2
3
4
5

PURGE A

DOSE A1

PURGE B

DOSE B

DOSE A2

DOSE A3

GFB #1

MANIFOLD

3X CABLE

USB BASE
MODULE

ALARM

PWR (RED)
COM (BLACK)
SIG (WHITE)
SHIELD/GRN

SIG
COM

+

-

BLACK
RED
BLACK
RED
BLACK
RED
BLACK
RED
BLACK
RED
BLACK
RED
BLACK
RED

P4

1

2
3
4
5

1

2
3
4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19

20
21
22
23
24
25
26
27
28
29
30

UNUSED
UNUSED
UNUSED
UNUSED
UNUSED

P1

V CAN
V CAN
V CAN
V CAN RTN
V CAN RTN
CHASSIS GND
CHASSIS GND
V CAN RTN
V CAN RTN
BIT 3
BIT 2
GND
SCK
SO
SI
V CAN
V CAN
V CAN
V CAN RTN
V CAN RTN
CAN L
CAN H
V CAN RTN
V CAN RTN
BIT 0
BIT 1
VTOKEN
LOFO
/HOLD
/CS

J2

1

USB COMPONENT

2
3

MODULE

4
5
6
7
8
9

10
11
12
13
14
15
16
17
18
19

20

1

2
22
23
24
25
26
27
28
29
30

1
2
3
4
5
6
7
8
9
10
11
12
13
14

1
2
3
4
5
6
7
8
9
10
11
12
13
14

Pressure Switch

Connections

GFB 1 PRESSURE SWITCH/
AIR FLOW SWITCH 2

FLOW METER B

3X CABLE

SIG
COM

PWR (RED)
COM (BLACK)
SIG (WHITE)
SHIELD/GRN

FIG. 9: System Electrical Schematic (ProMix 2KE)

312784D 13

Operation

Atomizing Air Safety Shutoff Valve

1. Mount the safety shutoff valve securely.

2. Connect the gun atomizing air from the ProMix 2KS
air flow switch to the safety shutoff valve IN port.
See F

IG. 2 and FIG. 10.

3. Connect an air line from the safety shutoff valve
OUT port to the gun air inlet.

Air Pilot Port (S)

0.375 in.

(9.525 mm)

Air Outlet

[normally closed]

Exhaust

to Gun

(normally

open)

Air Inlet

TI13110b

F

IG. 10: Air Safety Shutoff Valve

Connect the Air Tubes to the Gun Flush Box

P

A

C

S

F

IG. 11: Gun Flush Box Air Fittings (Bottom View)

NOTE: Use 5/32 in. (4 mm) OD tubing. Connect tubing

as follows:

1. From the P fitting to the air supply manifold (M, F

IG.

12). Use a clean, dry air supply (filtered to 10
microns).

2. From the A fitting to the pressure switch air input

(PS, F

IG. 12).

3. From the C fitting to the gun flush box solenoid

(GFB, F

IG. 12) output.

4. From the S fitting to the atomizing air safety shutoff

valve pilot port (F

IG. 10).

You must connect safety interlock air to prevent atomiz­ing air from turning on during flushing.

The four gun flush box air fittings are labeled as follows.

IG. 11.

See F

Label Function

P Gun flush box supply air input
A Return air/pressure switch signal
C Gun trigger cylinders air (activates gun trigger)
S Safety interlock (locks out atomizing air)

Trigger Height Adjustment

Adjust the trigger height to ensure the gun triggers dur­ing purging. See the Gun Flush Box manual 309227.

Operation

Follow the operating instructions in the proportioner
Operation manual. See the following chart for a sum-

mary of GFB functions.

GFB
Lid

Open Yes Locked out by safety shutoff valve
Open No Locked out by safety shutoff valve
Closed Yes Locked out by safety shutoff valve
Closed No Supplied to gun

Gun in
GFB? Atomizing Air Status

14 312784D

GFB to Solenoid

Connections

Operation

Pressure Switch and

Air Flow Switch

Connections

GFB to Air

Manifold

Connections

GFB#1 (C)GFB#2 (C)

GFB#1 (P)

GFB#2 (P)

TI13862a

PS#1 (A) PS#2 (A)

AFS#2 (OUT)

AFS#1 (OUT)

AFS#1
(IN)

AFS#2
(IN)

TI13860a

M

TI15099a

FIG. 12: GFB Solenoid, Air Manifold, Pressure Switch, and Air Flow Switch Connections (ProMix 2KS shown)

312784D 15

Operation

16 312784D

Maintenance

Maintenance

Daily Weekly Every 2 weeks, minimum

Gun Flush Box
Enclosure

Door Clean hinge holes. Grease hinges.
Cylinders Pull the cylinder rod forward

Switches Clean and lubricate.

Fluid Outlet tube

Clean the inside with a
compatible solvent.

Clean the inside and out­side with a compatible sol­vent.

and coat with grease or
petroleum jelly.

Check for buildup of mix
material and replace if
restricted.

Troubleshooting

Problem Cause Solution

Gun is in gun flush box, but sys­tem will not purge or mix.

Gun flush box fails to purge after
pot life time ends.

Air is shut off. Turn on system air.
Gun switch is not activating. Test switch. Replace if damaged.
Pressure switch is not working prop-

erly.

Tubing is not installed correctly. Check tubing connections, page 14.
Gun is not in gun flush box. Place gun in gun flush box when it is

Check that correct fluid station circuit
board input is activating (LED should
be lit).

not in use.

Gun switch is not activating. Test switch. Replace if damaged.

Gun trigger is not open when gun
flush box controller activates it.

Gun is out of gun flush box with
door closed but atomizing air is off.

312784D 17

Tubing is not installed correctly. Check tubing connections, page 14.
Cylinder is dirty or damaged. Clean cylinder rod or replace.
Gun is not properly set in gun holder. Check to make sure gun holder is not

obstructed by buildup.

Lower cylinder is out of adjustment. Adjust cylinder block. See Trigger

Height Adjustment, page 14.

Lid switch or gun switch failure. Check switches and replace if neces-

sary.

No air flow to gun flush box. Check air supply and tubing.

Parts

Parts

Part No. 15V826 Gun Flush Box Kit

101

115

113

112

114

TI13110b

TI12652a

109

TI14547a

107

108

118

102

TI13862a

103

110

105

104

TI15099a

18 312784D

Accessories

Part No. 15V826 Gun Flush Box Kit

Ref.
No. Part No. Description Qty.

101 244105 MODULE, gun flush box, see man-

ual 309227
102◆ 119159 SWITCH, air flow
103◆ 113029 NIPPLE; 1/4 npt
104◆ 111763 ELBOW; 1/4 npt (mbe)
105◆ 104641 FITTING, bulkhead; 3/4-20 unef x

1/4 npt(f)
107 121323 SWITCH, pressure
108 104176 BULKHEAD; 1/4 in. (6 mm) OD

tube x 1/4 in. (6 mm) OD tube
109 121324 VALVE, solenoid
110 111328 CONNECTOR; 10-32 x 5/32 in. (4

mm) OD tube
111 598095 TUBE, air, nylon; 5/32 in. (4 mm)

OD; for making air connections;

must be ordered in 500 ft (152.5 m)

lengths; not shown
112‡ 100081 BUSHING; 1/2 npt(m) x 3/8 npt(f)
113‡ 104632 VALVE, piloted
114‡ 111881 MUFFLER
115‡ 598140 ELBOW, tube; 1/8 npt(m) x 5/32 in.

(4 mm) OD tube
118 517312 ADAPTER, tube; 1/4 in. (6 mm) OD

tube x 5/32 in. (4 mm) OD tube

* Order length needed.

◆ Part of Air Flow Switch Kit 15T632.

Accessories

Gun Holder

1

Part No. For Gun

1
1
1
1

1
1

1
1

1

1
1
1
1

2

198405

198787

196768

196769

196770 Graco Alpha Gun
196771 Graco Alpha Plus, Alpha Plus with

196767 Devilbiss JGA/MSA*
15T646

15G093 Graco G15
15G346 Graco G40 and G40 with RAC Tip

* Brand names or marks are used for identification pur-

poses and are trademarks of their respective owners.

Graco PRO

Graco PRO

Graco PRO

Graco Delta Spray

RAC Tip

Graco AirPro

570123 Wall Mount Kit

For mounting the gun flush box to the spray booth wall.
Kit mounts only to the right side of the gun flush box.

™

Xs3, PRO™ Xs4

™

Xs2

™

3500, 3500hc, 4500

™

Gun

™

Gun

‡ Part of Atomizing Air Safety Shutoff Kit 15V823.

312784D 19

Accessories

20 312784D

Technical Data

Technical Data

Maximum Air Inlet Pressure . . . . . . . . . . . . . . . . . . . . . 100 psi (0.7 MPa, 7 bar)

Minimum Air Flow required to activate Air Flow Switch

Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 lbs. (9.6 kg)

Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

With door open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 in. (178 mm)

Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 in. (279 mm)

Outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 in. npt(f)

Wetted Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Stainless steel, nylon, ultra high molecular weight polyeth-

1 cfm (28.3 lpm, 0.028 m

14 in. (356 mm)
21 in. (533 mm)

ylene

3

/min)

312784D 21

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in
material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty
published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by
Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written
recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty
installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of
non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with
structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or
maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of
the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned
to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will
be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy
(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or
consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT
MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to

the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these
warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or
the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the
negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,
given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la
rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite
de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information

For the latest information about Graco products, visit www.graco.com.

TO PLACE AN ORDER, contact your Graco distributor or call to identify the nearest distributor.
Phone: [phone] or Toll Free: 1-800-328-0211 Fax: [phone]

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

Original instructions. This manual contains English. MM 312784

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441

Copyright 2008, Graco Inc. is registered to ISO 9001

www.graco.com

Revised 11/2010