MT Series DryLine
®
Dehydrator User Manual
10
The MT Series can be plugged into a standard
20-amp power receptacle of the rated voltage.
Electrical connections require separate circuits
when multiple dehydrators are installed.
Connect the dehydrator to a properly grounded
power outlet. Power is specified in Section 8,
Physical Specifications.
Grounding Instructions
This product should be grounded. In the event
of an electrical short circuit, grounding reduces
the risk of electric shock by providing an escape
path for the electric current. This product is
equipped with a cord having a grounding wire
and a grounding plug. It should be plugged into
a properly installed outlet that is grounded in
accordance with all local codes and ordinances.
Danger:
Improper installation of the grounding
plug can result in a risk of electric
shock. If repair or replacement of
the cord or plug is necessary, do not
connect the green grounding wire to
either flat blade terminal. Check with
a qualified electrician or serviceman
if you have any questions regarding
grounding or if in doubt as to whether
the product is properly grounded.
Connection to a Halo Grounding System: A #10
grounding stud is located at the inside power
entry area of the dehydrator chassis for direct
connections to a halo grounding system, where
applicable. Connect using a No.6 copper
stranded wire, terminated at the ground stud
with a proper ring tongue crimp-on terminal.
Plug and Outlet Configurations
Make sure that the units are connected to an
outlet having the same configuration as the
plug. Do not modify the plug. If it will not fit
the outlet, have a proper outlet installed by a
qualified electrician. Do not use an adapter. If
the product must be reconnected for use on a
different type of electric circuit, qualified service
personnel should make the reconnection.
Turn on the dehydrator. The solenoids on
the filter bowls should vent then close after
approximately 3 seconds. The dryer tube should
read 90±5 psig. The front panel gauge should
indicate 0 psig. The power LED and compressor
Run LED should be illuminated. The Low
Pressure alarm will clear when the system is
above 0.5 psig. The High Humidity alarm should
clear after a few minutes of running the unit.
When the above alarm conditions are met, the
dehydrator is ready to be placed into service.
The Excess Run alarm condition may exist due
to a continous run cycle because the unit is not
connected to the system.
Connect to Dry Air Cable System:
Caution:
Check the system pressure rating
before connecting the dehydrator
to the transmission line system. If
the rating is below 5 lb/in2 (35 kPa),
contact CommScope Customer
Service. To insure that all internal
dehydrator components are properly
dried; operate the DryLine
®
MT Series
unit for at least 45 minutes prior to
connecting the output air line to the
primary waveguide.
If the transmission lines have not been purged,
take the following steps to dry the system;
otherwise, proceed to Section 3, Operation.
1.
Determine total volume of the pressurized
dry air cable system to be connected to the
dehydrator. Refer to “page 12 - Times to
Purge and Pressurize.”
2.
Open the opposite end of the cable system
from the dehydrator for purging.
3.
Operate the dehydrator (after the initial 45
minute drying period) to deliver dry air into
the pressurized air system until a total of 3
volumes have been pumped through the
entire system.
4.
Check the humidity in the system using the
humidity alarm, if so equipped. Perform
this check after the far end of the system
has been closed and the system has been
stabilized for at least 5 hours.
5.
Check cycle timing. Compressor on time
should be no more than 10% of off time for
maximum life. If not:
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