General Operating Procedure
Use theH
2
-50ona flat, level surface,away fromopen flameandanyother ignitionsources, including
sparksources.
1. Remove thenutwith theseptumfrom theFill /H
2
Outporton the topof thegeneratorcell.
2. Use the20mLsyringemountedon theright-handsideof theH
2
-50chassis to injectcleandistilledwater
into thewaterreservoir. Althoughclean tapwaterwillwork inapinch,usedistilledwaterwheneverpossible.
Fillonlytothetopfillline;donotoverfill. Replacethenutandseptumonthefillportandhandtightenuntilthe
nutcontacts theblacko-ringon thefitting.
3. Makesure thedessicantbottlecontainsdrybeads. Drydessicantbeadsareblue incolor; they turngrey
whenwet. Seebelowfor instructionsonrechargingandreplacing thedessicantbeads.
4. Connect the H
2
-50s H2 OUT fitting to the GCs hydrogen gas inlet. Output from the H
2
-50
HYDROGENOUTfitting isconnected to theGCwith1/8or1/16O.D. tubing. Makesure theredand
blackpower cord is plugged into theH
2
-50 chassis, and connect the external power supply cord to the
generatorandawalloutlet. Makesureyouhave thecorrect inputcordfor thevoltageyouareusing. Properly
used, the transformer isnotasparksourceandposesno ignition threats.
5. Close theH
2
shut-offvalve. Alwaysbuilduppressure initiallywith the togglevalveshut; itwill take5-15
minutes.
6. TheH
2
gaspressure ispreset to35psi (241316Pa, 2.4bar). Once thispressure isattained, the interior
pressureswitchwillshutoff thecurrent to thegenerator. Thewater in thegeneratorcellreservoirshouldstop
bubbling.
7. Wait10minutes tomakesure that35psi (241316Pa,2.4bar)pressure ismaintained. Ifpressure isnot
beingmaintained, there isprobablya leak. Check thedessicantbottle; itshouldbesnugagainst theo-ring.
Makesure theFill /H
2
Outportnutandseptumare intactandsnug. Check thebottomof thewaterreservoir
aroundthePEMformoisturetoensuregeneratorcellintegrity;ifyoufindanyseepage,tighteneachoftheeight
screws thathold thecell layers together.
8. Ifyoufindno indicationofa leakafter10minutesofstabilizationat35psi (241316Pa,2.4bar),open the
togglevalve to let theH
2
gasflow into theGC.
9. When thewater in thegeneratorcellwaterreservoirreaches thebottomfill line, it is time torefill it.
10. Close the togglevalve.
11. Unscrew theFill /H
2
Outportnutandseptumanduse thesyringe torefill thecell to the topfill line.
12. Replace thenutandseptum,and tightenuntilsnug.
13. Sinceyouhave thecellpressurevented, it isagood idea tocheck thedessicant foranygreycoloring to
see if thebeadsneed recharging. If theydo, follow the instructionson thenextpage (
GeneralOperating
Procedure continued
).
GC ACCESSORIES
H
2
-50 Stand-Alone Hydrogen Generator
