Installing The Micro-Fuel Cell; Gas Connections - Teledyne 3000PB Operating Instructions Manual

3 Installation
3.4

Installing the Micro-Fuel Cell

The Micro-Fuel Cell is not installed in the cell block when the
instrument is shipped. It must be installed before the analyzer is placed in
service.
Once it is expended, or if the cell is exposed to air for too long, the
Micro-Fuel Cell will need to be replaced. The cell could also require replace-
ment if the instrument has been idle for too long.
When the micro-Fuel Cell needs to be installed or replaced, follow the
procedures in chapter 5, Maintenance, for removing and installing cells.
3.5

Gas Connections

Before using this instrument, it should be determined if the unit will be
used for pressurized service or vacuum service and low pressure applica-
tions. Inspect the restrictor kit that came with the unit. The kit consist of two
restrictors and a union for 1/4" diameter tubing. Notice that the two 1 3/4"
long, 1/4" diameter tubing are restrictors. It has an open end and a closed
end with a small circular orifice. The restrictor without the blue sticker is for
low pressure and vacuum service. For high pressure (5 to 50 psig) applica-
tions, use the restrictor that has a blue sticker on the body.
For pressurized service, use the restrictor without the blue dot and union
from the restrictor kit and attach it to the Sample In port. The small circular
orifice should face away from the back of the unit (against the direction of
gas flow). Use the restrictor without the blue dot sticker in the same manner
for low pressure applications (less than 5 psig).
For vacuum service (5-10 in Hg), use the restrictor without the blue dot
sticker and union but attach it to the Exhaust Out port. The small circular
orifice should face toward the back of the unit (against the direction of gas
flow).
Remove the blue sticker from the restrictor before using.
WARNING:
Figure 3-10 is an illustration of the Gas Connector Panel. Optional gas
connections are shown in shaded blocks.
The unit is manufactured with
are supplied for metric system installations.
For a safe connection:
3-12
Operating the unit without restrictors can cause damage to t
the micro-fuel cell.
1
/ inch tube fittings, and 6 mm adapters
4
Teledyne Analytical Instruments
Model 3000PB