B
Rev
RE
Status
Model Version
04
01
Version
01
A
Status
Rev
10 of 14
page
Bulletin
AE01B-A0599-001
Installation Instructions
MT050C
3.5 Parts Replacement and Dehydrator Overhaul
COMMSCOPE MT050C 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.
3.5.1 In Case Of Difficulty:
If the dehydrator is not operating, refer to
Section 2
on Installation and
Section 4
on Troubleshooting the unit.
3.5.2 Tools
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
3.5.3 Overhaul Procedure
When the MT050C 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 MT050C, the unit must be turned off, power removed 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
To remove the compressor, open the cover panel of the unit.
Disconnect the compressor wiring (6-pin connector) from control board.
1.
Disconnect the tubing from the output of the compressor. The tubing and hose clamp can be discarded as replacements are
2.
provided in the compressor overhaul kit.
Remove the four compressor screws from the bottom and front of the dehydrator. Remove the compressor from the chassis.
3.
Remove the brackets that cover the compressor head.
Follow the instructions included in the compressor overhaul kit. When the overhaul is complete, reinstall in reverse order.
4.
3.6 Service Restoration
RECOMMENDATION:
If the dehydrator overhaul process has taken more than a few hours, it is recommended that the unit be run for one hour without being
connected to any closed air volume in order to purge the membrane dryer and tank of any accumulated moisture. If the transmission lines
have been exposed to ambient air and/or have not retained their system pressure, it is also recommended that the lines be purged.
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