PMT200B SERIES DryLine
®
DEHYDRATOR USER MANUAL
9
Output pressure can be adjusted between
13.8 kPa (2.0 psig) and 41.4 kPa (6.0 psig)
- adjustment outside this range will have a
negative impact on the performance of the
dehydrator.
1. Locate regulator
2. Loosen lock nut
3. With unit running turn stem CW to increase.
CCW to decrease output pressure.
4. Place finger on output to verify pressure
setting on the front display.
5. Repeat step 3 and 4 until desired pressure is
set.
6. Tighten lock nut and return unit to service.
Air in the transmission line system must be
replaced with dry air to ensure satisfactory
operation of the transmitted signal.
1. Determine the total system volume.
2. Divide the system volume by the flow rate
of the dehydrator 340 SLPH (12 SCFH) to
determine the number of hours needed for
the purge cycle.
3. Open the far end of the transmission line.
4. Operate the dehydrator for a minimum three
purge cycles. If possible, operate for 12
purge cycles to completely dry the line.
If it is not possible to open the far end of the
transmission line, follow these steps:
1. Connect the dehydrator to the transmission
line and pressurize the system. The system
pressure should reach 21 kPa (3.0 psig).
Note: If the transmission lines have not been
purged, continue with section 2.8. Otherwise
proceed to section 3.
Using supplied PTFE tape screw one of the
included 3/8” compression fittings into the output
bulkhead. There is an elbow and a straight
compression fitting included with the unit.
Insert one end of the 3/8 in, polytube feed
line tubing into the compression fitting on the
dehydrator output port. Tighten securely with a
9/16 in, wrench. Be careful not to over tighten.
Connect the other end of the polytube to the
transmission line.
Four air outputs are provided, with individual
shut–off valves on the unit. Make sure that
the valve is in the open position for each
transmission line connection. If one of the
output connections is not used, close the valve
and leave the port capped.
Checking Individual Line Pressures
In order to check individual line pressures with
the PMT200B, you will need to close the valves
on all of the lines except for the one that you
are checking. With the keypad, scroll to the
“System Pressure” screen and the reading is the
pressure on the isolated line. Repeat with each
additional line and don’t forget to re-open all of
the valves when finished.
2. Wait 15 minutes while the air absorbs
moisture in the system, then disconnect the
dehydrator from the transmission line and
allow the air to vent.
3. Repeat steps 1 and 2 twelve times to purge
the system.
NOTE: Some components have been removed for
clarity to see the regulator.
