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SCI PEM-HG, Quick Instruction Manual, Page: 8 / 9

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SCI PEM-HG Quick Instruction Manual Download Page 8

PEM Hydrogen generator quick instruction manual 

 

 

 

Optional security H2 overflow consumption control 

3 port 

valve 

H2 Flow 

Control 

Neutral 

gas 

(N2) 

GC or other 

hydrogen 

consumer 

Out put 

Hydrogen 

(H2) 

How does it work: 

There is an event output that is controlled by SET Flow, when real flow exceed 
the set flow more than 60 second then system realize an overflow 

(it may be of 

broken column in GC oven or any other leak in the stream of hydrogen)

 and then 

the system stop generating hydrogen and activates a 3 port valve and purge the 
oven or any other chamber with neutral gas such as nitrogen (N2) and issue 
flowing error in error line 4 of LCD and sounds the alarm buzzer.   

Over flow Error 

Summary of Contents for PEM-HG

Page 1: ...PEM Hydrogen generator quick instruction manual Quick Instruction manual PEM HG PEM Hydrogen Generator ...

Page 2: ...Distillated water 0 5 micro Siemens cm Cell Water Trap 1 2 Cell power supply LCD and LED front Panel H2 out 300 ml min 1 Silica gel filter 2 M Sieve filter Drain Attention Don t add any lye to water such as KOH or NaOH Use only de ionized pure water less than 0 5 micro Siemens cm or more than 2 Mega ohm cm Change water and clean water tank every 1 month 30 days PEM Hydrogen generator structure ...

Page 3: ...Line 3 H2 output pressure PSI Line 4 Status of instrument and Alarm message Increase Set Value Decrease Set Value Function Key to toggle between Pressure and Overflow Line 1 OH operating hour in hour and minute WQ Water Quality Line 2 H2 generation over flow ml min at set mode Line 3 H2 output pressure PSI at set mode Line 4 TH Total H2 generated M cubic meter L litter C cc ...

Page 4: ... at line 4 LCD refer to Alarm section Power Light shows that instrument power is on Full Light Shows the water tank is full and if LED Blink it shows that water tank is over and it must to empty until it stop blinking and alarm is removed Med Light shows water level is medium and good Low Light Shows the water tank level is low and distilled water must be add to water tank If LED Blink the water t...

Page 5: ... Water over error Cause the water tank is over full Action H2 generation stop alarm Light blinks and buzzer sound every 10 second Trouble shooting empty water tank until alarm disappear Pressure over error Cause H2 pressure is more than 90 PSI Action H2 generation stop alarm Light blinks and buzzer sound every 10 second Trouble shooting Turn instrument power off and call to company service section...

Page 6: ...t pipe and fix a blank nut and turn instrument power on and wait 15 minute and check for leak error again if no leak error then the leak is out of hydrogen generator and check the user instrument or connection of pipes If steel the leak alarm exists check filter cap it may be lose and if it was tight and no leak at filter cap then connect with maintenance section of company PEM HG maximum H2 gener...

Page 7: ... minutes 3 Molecular sieve 5 angstrom with dark yellow color that when saturated there is no color change and every 1 month it must be changed or regenerated in oven at 300 C for 120 240 minutes Filter content change or regeneration sequence Turn instrument off Reduce H2 pressure to zero Open filter cap 2 side cap Fig F1 as Fig F2 1 Take out the inside filter Fig F2 2 by pliers Open inside filter ...

Page 8: ...t is controlled by SET Flow when real flow exceed the set flow more than 60 second then system realize an overflow it may be of broken column in GC oven or any other leak in the stream of hydrogen and then the system stop generating hydrogen and activates a 3 port valve and purge the oven or any other chamber with neutral gas such as nitrogen N2 and issue flowing error in error line 4 of LCD and s...

Page 9: ...ty service is not free of charge users do not operate the generators according to the operational manual users disassemble parts by themselves users use more than generated capacity and use bad quality water Body and setup of the instrument AC 220 volt 50 Hz 150 Watt Fuse 5 A glass ...

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