background image

Instructions 

2

3A1963G

Instructions

Warnings

Also see the G3 Pump Instruction manual for additional 
warnings.

Pressure Relief Valves 

The pressure relief valve 
uses a pressure adjustment 
screw (a) to set the pres-
sure release point. 

It is not 

intended as a way to 
relieve pressure during 
normal operation

 but as a 

protective measure in the 
event there is an unin-
tended pressure increase in 
the system. 

NOTE:

 

Do not use this pressure relief valve as a means 
of relieving pressure in day-to-day, normal cycle 
operation. Use the pressure relief procedure 
described on page 3 of
 this manual to relieve 
pressure during normal cycle operation.

The pressure relief valve included in this kit can 
only be used with the Graco G3 Pump. It is not 
intended for use with any other products.

Factory set to 4000 psi (275.8 bar, 27.6 MPa).

The pressure adjustment screw (a) will require periodic 
adjustments. Whenever the valve is set/adjusted (after 
the set point is found) it is important to ensure that the 
valve is not bottomed out and there is at least 1/2 turn of 
adjustment remaining. This is determined by turning the 
screw (a) 1/2 turn and then back turning it out again. 

NOTE:

 Turning adjustment screw (a) clockwise, 

increases pressure.

ELECTRIC SHOCK HAZARD

 

This equipment must be grounded

.

 Improper grounding, 

setup, or usage of the system can cause electric shock.

Turn off and disconnect power cord before servicing 
equipment.

Connect only to grounded electrical outlets.

Use only 3-wire extension cords.

Ensure ground prongs are intact on power and 
extension cords.

Do not expose to rain. Store indoors

SKIN INJECTION HAZARD 

High-pressure fluid from dispense device, 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. 

Follow 

Pressure Relief Procedure

 in this manual, 

when you stop dispensing and before cleaning, check-
ing, or servicing equipment. 

a

locking
nut

Summary of Contents for 571169

Page 1: ...2 VDC BSPP 571171 24M481 24 VDC BSPP 571172 24M482 Models 115 VAC NPT 24M480 115 VAC BSPP 24M483 230 VAC NPT 24N182 230 VAC BSPP 24M484 Part No Left Side Mount Models 230 VAC NPT 24T178 24 VDC NPT 25A211 Maximum Working Pressure 3500 psi 241 bar 24 MPa Important Safety Instructions Read all warnings and instructions in this manual and the G3 Pump instruction manual included with your unit Save the...

Page 2: ...stments Whenever the valve is set adjusted after the set point is found it is important to ensure that the valve is not bottomed out and there is at least 1 2 turn of adjustment remaining This is determined by turning the screw a 1 2 turn and then back turning it out again NOTE Turning adjustment screw a clockwise increases pressure ELECTRIC SHOCK HAZARD This equipment must be grounded Improper gr...

Page 3: ... Reference numbers used in these instructions corre spond to parts included in Kit and are provided on page 6 Parts identified with an alpha character are user pro vided or already installed components 1 Disconnect power source 2 If unit has already been in service relieve pres sure 3 Be sure the two o rings 8 9 are correctly installed on the bolt 7 as shown in FIG 2 4 Remove plug from G3 and inst...

Page 4: ...nection is made through primary outlet 4a 8 Plug 10 can be removed to install a pressure gauge or to use this port as an outlet Step 9 applies to models 571169 571170 571171 571172 only All other models skip this step and continue instructions with Step 10 9 Connect end of cable 13 to the G3 FIG 7 NOTE To verify the correct port on the G3 is selected locate the symbol shown in FIG 7 on the G3 labe...

Page 5: ...the G3 Pump instruc tion manual for Vent Valve Timer Setup instructions NOTE For all other externally controlled G3 pump models see your separate controller instructions Parts Right Side Installation Shown Left Side Installation Shown Ref 13 not shown FIG 8 13 a ti17731 6 5 4 7 1 9 8 10 13 3 6 5 4 7 1 9 8 10 3 ...

Page 6: ...O DEU NPT 1 MANIFOLD vent valve 24 VDC N O DEU NPT 1 1 MANIFOLD vent valve 115 VAC N O DIN NPT 1 MANIFOLD vent valve 230 VAC N O DIN NPT 1 1 MANIFOLD vent valve 24 VDC N O DIN NPT 1 MANIFOLD vent valve 12 VDC N O DEU BSPP 1 MANIFOLD vent valve 24 VDC N O DEU BSPP 1 MANIFOLD vent valve 115 VAC N O DIN BSPP 1 MANIFOLD vent valve 230 VAC N O DIN BSPP 1 3 VALVE pressure relief 1 1 1 1 1 1 1 1 1 1 1 1 ...

Page 7: ...VALVE FOR G3 PUMPS US Metric Maximum working pressure 3500 psi 24 MPa 241 bar Pressure Relief Valve Factory Set Pressure 4000 psi 10 27 6 MPa 275 8 bar 10 Reset Pressure 80 of pressure Relief Rate 0 13 gallons sec 3000 psi 0 57 liters sec 21 MPa 207 bar Solenoid Valve Flow Up to 5 gpm 18 9 lpm Materials of Construction Wetted materials on all models zinc plated steel carbon steel 6061 T6 aluminum ...

Page 8: ...t notice For patent information see www graco com patents Original instructions This manual contains English MM 3A1963 Graco Headquarters Minneapolis International Offices Belgium China Japan Korea GRACO INC AND SUBSIDIARIES P O BOX 1441 MINNEAPOLIS MN 55440 1441 USA Copyright 2011 Graco Inc All Graco manufacturing locations are registered to ISO 9001 www graco com Revision G November 2020 ...

Reviews: