PMT200B SERIES DryLine
®
DEHYDRATOR USER MANUAL
11
Check the hour meter in the display to help to
determine the duty cycle of the dehydrator.
If the dehydrator has been running for more
than 20% of its installed time, check the systems
for leaks. Also check the time on the meter to
determine if it is time to perform the 6000–hour
overhaul.
Parts Replacement and Dehydrator Overhaul
CommScope PMT200B DryLine
®
Dehydrators
are designed to give many years of trouble-free
service and require very minimal maintenance.
The dehydrator contains, as a standard
feature, an electronic hour meter that records
compressor run hours. To ensure continuous
and reliable operation, the dehydrator must be
overhauled every 6000 hours of compressor
operation. The overhaul kit, listed below,
contains all of the necessary parts to perform
this overhaul. The dehydrator overhaul kit
includes parts to overhaul the compressor and
critical components in the dehydrator that often
become worn over time.
If the dehydrator is not operating, refer to
Section 2
on Installation and
Section 4
on
Troubleshooting the unit.
The following tools are used in the maintenance
and overhaul procedures.
• Adjustable open—end wrench
• Allen wrench 5/32
• #2 Phillips screwdriver
• Small flat-blade screw-driver
When the PMT200B compressor run time
reaches 6000 hours (or a multiple of 6000
hours) it is time to replace certain items in the
compressor and the air path of the dehydrator.
These include the piston cups, piston seals
and head gaskets of the compressor, the filter
elements in the water and coalescing filters,
and the tube section connecting the compressor
output to the coalescing filter input.
3.5.4 Unit Shutdown and Removal
In order to perform an overhaul on the
PMT200B, the unit must be turned off and
removed from service. As this is being done,
the low pressure alarm may active through a
reporting alarm system. Personnel monitoring
such an alarm should be notified in advance
so that they are aware of the fact that service
is being performed. It is also necessary to
disconnect the dehydrator dry air output from the
waveguide system during the overhaul.
3.5.5 Remove the compressor for overhaul.
1. To remove the compressor, open the upper
front panel of the unit..
