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PN 08220

 

04/2020

 

COMPLETE MAINTENANCE (SIX

-

YEAR TEARDOWN) PROCEDURE

 

1.

 

Discharge powder and pressure into a "closed" dry

-

powder recovery system (several are commercially 

available). Make sure that the extinguisher is completely empty and depressurized.

 

CAUTION:  Do not contaminate by mixing with other types of dry powder or dry chemical.

 

2.

 

Perform all required maintenance in Steps1 through 8 of "

Maintenance Procedure

" (Annually).

 

3.

 

VERIFY THAT NO PRESSURE REMAINS IN THE EXTINGUISHER

 (slowly squeeze discharge lever, 

aiming away from persons or objects, which might be injured or damaged). Remove the valve assembly 
from the cylinder and inspect it for signs of corrosion or damage to the threads. Replace parts as 
necessary.

 

4.

 

Complete steps 2 through 13 of Recharge Procedure.

 

TROUBLESHOOTING GUIDE

 

 

PROBLEM

 

CORRECTIVE ACTION

 

1

 

Leak at operating valve col-
lar O

-

ring

 

Remove valve assemble, clean collar thoroughly and install new collar 
O

-

ring. Lubricate with Bluestar V

-

711

 

2

 

Leak through valve

 

Install new valve stem assembly. Check valve seat scratches or foreign 
matter. Install new valve stem assembly

 

3

 

Leak around gauge thread

 

Remove gauge*, and reinstall using Teflon tape on the gauge threads.

 

4

 

Defective gauge

 

Remove defective gauge*, and install a new gauge using Teflon tape 
on the gauge threads.

 

5

 

Leak in the cylinder

 

Contact Amerex if under warranty, otherwise mark 

Rejected

” 

and re-

turn to owner.

 

*

 

Pressure gauge threads are coated with a special epoxy at the factory. For easy removal soak the 
valve assembly ( minus the downtube assembly) in hot water (180°F/82°C) for two to four minutes. 
Remove gauge with a 

7/16” 

open

-

end wrench. 

 

 

FOR REPLACEMENT PARTS SEE THE AMEREX PORTABLE AND WHEELED 

PARTS BOOK PN 27277 AVAILABLE AT http://www.amerex

-

fire.com UNDER 

MANUALS OF THE RESOURCE SELECTION. 

 

 

Summary of Contents for 570

Page 1: ...EREX CORPORATION IT SHALL NOT BE DUPLICATED USED OR DISCLOSED TO OTHERS WITHOUT THE EXPRESS WRITTEN CONSENT NOTES 1 THIS COVERSHEET FOR INFORMATIONAL PURPOSES ONLY DO NOT PRINT THIS PAGE IN MANUAL 2 DESCRIPTION MANUAL OWNER S SERVICE FOR MODEL B570 PORTABLE EXTINGUISHER 3 ACTUAL PRINTED MATERIAL TO CONSIST OF ATTACHED 4 OVERALL SIZE OF PRINTED DOCUMENT PAGES 8 1 2 X 11 ON 20 LB PAPER 5 PRINTED MAT...

Page 2: ...EDIATELY AFTER ANY USE OWNER S SERVICE MANUAL INSTALLATION OPERATING SERVICING INSTRUCTIONS MANUAL PN 08220 CLASS D PORTABLE EXTINGUISHER MODEL B570 AMEREX CORPORATION DOES NOT SERVICE MAINTAIN OR RECHARGE FIRE EXTINGUISHERS THIS MANUAL IS PUBLISHED AS A GUIDE TO ASSIST QUALIFIED SERVICE PERSONNEL IN THE INSPECTION MAINTENANCE AND RECHARGE OF AMEREX FIRE EXTINGUISHERS ONLY NO INSTRUCTION MANUAL CA...

Page 3: ... applicable standards of Factory Mutual to ANSI UL 711 and ANSI UL 299 It also complies with industry standards as presented in the National Fire Protection Association Standard No 10 Standard for Portable Fire Extinguishers WARNINGS USE THIS EXTINGUISHER ONLY ON CLASS D BURNING METALS CLASS D FIRES NORMALLY GENERATE EXTREMELY HIGH HEAT AMEREX RECOMMENDS THE USE OF PROTECTIVE CLOTHING AND SELF CON...

Page 4: ...ess than 50 feet 15 m from the hazard leaving unobstructed access Avoid placing it in an extremely hot or cold place The operational temperature range is 40 F to 120 F 40 C to 49 C Adequately protect the extinguisher if temperatures outside this range are anticipated Keep the extinguisher clean and free from dirt ice chemicals and any contaminants that may interfere with its proper operation DO NO...

Page 5: ...ob the chemical onto the fire Be careful not to spread the fire surface when using this technique 4 Reapply powder to visible hot spots 5 To avoid re ignition allow metal to cool before cleanup 6 Evacuate and ventilate the area immediately after use The fumes and smoke from any fire may be hazardous and can be deadly INSPECTION INSPECTION NFPA 10 is a quick check intended to give reasonable assura...

Page 6: ...late label Recharge extinguisher if weight is not within indicated allowable tolerances see instructions in Recharge Procedure 4 Check the date of manufacture stamped on the bottom of the extinguisher or nameplate for model B570 and on the wall hanger loop for Model 570 Cylinder must be hydrostatically proof pressure tested every 12 years to the test pressure indicated on the nameplate 585 psi 403...

Page 7: ...available 4 Use a regulated pressurizing source of ARGON ONLY Set the regulator to no more than 220 psi 1520 kPa 5 Check and calibrate regulator gauge at frequent intervals The regulator gauge shall be used to determine when the intended charging pressure has been reached Do not use the extinguisher gauge for this purpose 6 Never leave an extinguisher connected to a regulator of a high pressure so...

Page 8: ... fluid or a solution of soapy water to the valve discharge orifice around the collar O ring sealing area cylinder welds and gauge Remove leak detecting fluid from valve assembly by blowing out with air or argon Wipe exterior of extinguisher to remove any remaining residue 11 Install the hose assembly to the operating valve Reconnect the female swivel on the extension applicator to the male swivel ...

Page 9: ...ROBLEM CORRECTIVE ACTION 1 Leak at operating valve col lar O ring Remove valve assemble clean collar thoroughly and install new collar O ring Lubricate with Bluestar V 711 2 Leak through valve Install new valve stem assembly Check valve seat scratches or foreign matter Install new valve stem assembly 3 Leak around gauge thread Remove gauge and reinstall using Teflon tape on the gauge threads 4 Def...

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