Perma Pure Mini-GASS 2812T - Manual (Page 27)

27 Mini-GASS User Manual
2. Plumbing
1. Connect blowback air line to blow back inlet port on the Mini-GASS.
2. Connect cal gas line to fitting labeled “Cal Gas Inlet”.
3. Connect 110VAC power to blow back timer Note: This also provides power to the
filter in the probe.
3. Blow Back Operation
The blow back option includes a timer circuit which will initiate the blow back cycle based
on a regular, adjustable time period. The time cycle control turned to the far left will cycle the
blow back every 15 minutes. At the far right side, the period of time between cycles is about
24 hours. The period of time between blow back cycles should be calculated to occur as
often as when the filter has trapped one gram of particulates but no less frequently than
once per day.
A jumper placed between “AUTO OFF”and “COM” will disarm the timer. A contact
closure between terminals labeled “MAN B-B” and “ COM” will initiate a blow back cycle.
The blow back solenoid valve will be opened for 2 seconds when the blow back cycle is
started.
4. Startup
Return to Mini-GASS Startup Section 4 on pages 14-16.
5. Maintenance
Changing the Filter in Blow Back/Probe Assembly
1. Unscrew black filter cap inside Mini-GASS system (use gloves if hot to touch).
2. Filter is now exposed. With a pair of pliers, pull out the old filter.
3. Inspect o-ring which are at each end of filter. Replace if they are charred or deformed.
4. Place new filter element using pliers. Ensure it is centered and in contact with o-ring.
5. Screw cap back on the filter body.