Amerex 05620 - Manual (Page 5)

7. Disconnect the regulator from the agent cylinder. Visually examine the regulator and high pressure hose for signs
of damage, corrosion or deterioration. To perform the regulator static pressure, dead set and minimum pressure
flow rate checks:
a)
Connect the proper service kit ADAPTER (P/N: 01740) to the low pressure outlet port of the regulator.
b) Connect the service kit HOSE ASSEMBLY (P/N: 01410) and FLOW CHAMBER (P/N: 01250) to the
regulator low pressure port adapter.
8. Make sure all service kit connections are secure and that the kit flow chamber is CLOSED. Check the ARGON
cylinder pressure to ensure that it is within the acceptable operating range. Hold the kit flow chamber in one
hand and slowly open the Argon cylinder (with either “T” handle operating lever or by turning the handwheel if so
equipped). Observe flow chamber pressure reading to see if it is within the recommended static dead set
pressure parameters for the Models 680 & 681 regulator listed below.
Regulator Type Static Dead Set Pressure Minimum Flow Pressure
Victor 120 ± 10 PSI 110 PSI minimum
WARNING: IF THE PRESSURE READING EXCEEDS THE GIVEN PARAMETERS, QUICKLY CLOSE THE ARGON
CYLINDER “T” HANDLE OR HANDWHEEL VALVE AND VENT THE PRESSURE BY OPENING THE FLOW
CHAMBER BALL VALVE.
REGULATORS CANNOT BE FIELD ADJUSTED. THEY MUST BE REPLACED IF FOUND TO BE OUT OF TOLERANCE.
9. Observe the proper regulator static dead set pressure for a minimum of one minute, then fully open the flow
chamber valve for 1 - 2 seconds. Observe the pressure reading to ensure that the flow pressure does not drop
below the minimum specified. Close the Argon cylinder valve after the test and vent the flow chamber pressure
by opening the flow chamber valve.
Note: Prior to performing the minimum flow check, make sure that the nitrogen cylinder valve (“T” handle or
handwheel) is FULLY OPEN so that it does not restrict or alter the flow readings.
WARNING: ALWAYS OPEN THE SHUTOFF NOZZLE HANDLE SLOWLY. ANY PRESSURE IN THE AGENT CYLINDER
WILL CAUSE THE EXTINGUISHER TO DISCHARGE. BE PREPARED FOR A POSSIBLE DISCHARGE AND
NOZZLE RECOIL. ANY EVIDENCE OF AGENT IN THE NOZZLE INDICATES THAT THE UNIT MAY HAVE
BEEN USED AND THE USE NOT REPORTED.
10. Disconnect the discharge hose from the agent cylinder. Check the couplings, hose and hose gaskets for dam-
age or deterioration – replace as necessary.
11. To perform an operational integrity check on the discharge hose and nozzle combination:
a)
Connect the test kit hose adapter to the female end of the discharge hose.
b) Close the discharge nozzle shut-off lever and properly secure it.
c) Connect a properly regulated and verified nitrogen pressure source (set to the extinguisher operating
pressure [110 - 130 psi] to the test kit hose adapter.
d) Slowly pressurize the discharge hose/nozzle assembly to the extinguisher operating pressure and check
for leaks or distortion.
e) Operate the nozzle lever to ensure proper operation and to clear the hose of any obstructions (if hose is
obstructed - refer to the TROUBLE SHOOTING section of this manual.
f) Close the nitrogen pressure source and relieve remaining pressure by slowly and fully opening the nozzle lever.
12. Remove the agent cylinder cap and examine it closely for signs of damage, cracks or thread wear. Clean the
agent cylinder fill cap threads and thread vent port on the cap with a stiff bristle nylon brush. Remove the fill cap
gasket and check for wear, cracks or tears - replace if necessary. Lightly lubricate the gasket with Visilox 711
and reinstall.
13. Examine the condition of the chemical agent for proper type and condition. Replace chemical that is contami-
nated, caked or different than the type indicated on the nameplate (label). Do not trust to the “height” of the
chemical when determining agent fill. Dry powder will settle and the only true indication of agent fill is to weigh
the extinguisher and compare with the weight indicated on the nameplate (label).
14. Place the service kit VENT SPACER (P/N: 01530) on top of the agent cylinder fill opening collar. Check again to
see that the fill cap thread vent is clean and that the agent ill cap gasket is in place. Install the agent fill cap
securely over the vent spacer.