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Graco 254986 Troubleshooting Manual

Graco 254986
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Flow Switch
Air
Compressor
Control Board
Exhausted
Air
ROTORY
SWITCH
Red High
Yel. Med.
Wht. Com.
Blk. Off
Blu. Prime
Grn. Low
Transducer:
Sends a signal to the control board for material
pressure and protects the sprayer from over
pressurizing. Shuts pump down at 1000psi!
The Flow Switch will remain
open until air flow is present.
The Gun being triggered or
a Air Leak will cause the
piston to move towards the
magnetic reed switch and
close the circuit. Once the
Control Board senses the
closed circuit it will engage
the clutch and close the dump
valve.
Gun Valve
When Coil Voltage is present, the coil will close the
air valve changing the direction of the air flow to the
dump valve. Air will now travel through the blue
hose to the back of the dump valve forcing it closed
Air
Regulator
0-125psi
Control Board must
see 30psi to operate!
1030FC Electrical and Air Ladder Diagram
Thermistor
Clutch CoilEngine Power
Engine
12-18VAC
Spraying Mode:
In order to spray the control board must senses 30psi or higher and the rotary switch must be in one
of the 3 settings Low/Med./High. When the spray gun is triggered the flow switch will close,
sending a signal to the control board. The control board will then send voltage out to the clutch
field to start the pump. At the same time voltage will be sent to the Mac air valve coil. The coil will
close the air valve changing the direction of the air flow to the dump valve. Air will now travel
through the blue hose to the back of the dump valve forcing it closed .When this occurs the
material will be forced out through the material hose.
Air
Air
Blue
Black
Gun Air
Nozzle
Not
Used
Pinion
Assembly
245399
Dump Valve
287127
Flow Sensor Kit
234232
15B671
234234
Mac Air Valve
15B683
23

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Graco 254986 Specifications

General IconGeneral
BrandGraco
Model254986
CategoryPaint Sprayer
LanguageEnglish

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