CommScope DryLine MT 1000, Руководство пользователя

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MT Series DryLine
®
Dehydrator User Manual
22
7.1 Parts Replacement Procedures
When the dehydrator run time reaches 6000
hours, it will be necessary to rebuild the
compressor and replace the hoses, clamps,
water and coalescent filter elements. The
necessary parts and instructions are included in
the over haul kit, listed in Section 7.0.
Following are procedures for replacement of the
parts listed in Section 7.0.
7.2 Unit Shutdown and Removal
In order to perform parts replacement on the MT
DryLine
®
Dehydrator, it will be necessary to turn
off the unit and remove them from service. As
this is done, one or more of the alarms may be
activated. Personnel who may be monitoring
these alarms should be informed prior to the
units being turned off. It will also be necessary
to close off the transmission lines connected to
the dehydrator to avoid losing pressure in these
lines. Once these steps have been taken, turn
off the power to the unit, disconnect the alarm
connections and unplug the unit. The units can
now be moved to a suitable work area for parts
replacement.
7.3 Door and Panel Removal
Caution:
Disconnect electrical power from the
unit before removing the doors.
Carefully loosen the screws in the front doors
and swing them open.
Loosen the screws in the side panels and
remove the side panels by lifting them away
from the unit.
7.4 Replace Power Switch
Disconnect the four terminals from the power
switch, carefully noting the location of each wire.
Compress the retainers on the switch and push
the switch out the front of the chassis. It may be
necessary to rock the switch from top to bottom
to remove it. Replace switch, by snapping it in
place. Reconnect the four wires.
7.5 Replace Circuit Breaker
The circuit breaker is located on the upper
front door of the dehydrator. Disconnect the
two terminals from the circuit breaker, carefully
noting the location of each wire.
To remove the circuit breaker, compress the
retainers on both sides and push it through the
front panel opening. Replace circuit breaker,
snapping it in place. Reconnect the two wires.
7.6 Replace Time Delay Module
The Time Delay Mdule is located on the lower
right side of the upper front door. Disconnect
the three wires and the two resistors from the
module terminals, carefully noting the location
of each wire. Remove hardware which secures
the module to the chassis. Remove relay
and replace with a new module using existing
hardware. Reconnect the wires and resistors.
7.7 Replace Compressor
Disconnect Wiring
With the side doors removed, remove the cover
plate on the compressor covering the electrical
connections. Loosen the ground screw and
remove the green wire from the connection box.
Disconnect the white wire (terminal 1) and black
wire (terminal 2) from the motor connections.
The compressor should now be free of any
electrical connections to the unit.
Disconnect Tubing
Remove the milky white hose which runs from
the compressor outlet to the heat exchanger
inlet. Again it may be necessary to cut the
clamp and hose to remove it from the heat
exchanger. Using the old tubing as a template,
cut the replacement tubing to length using a
sharp knife. Remove the drip pan assembly
from the head of the old compressor and
remount it to the replacement compressor. The
compressor assembly should now be free of all
tubing connections.
Compressor Remount and Reassembly
Remove the bolts which secure the compressor
to the back mounting plate. Carefully remove
the compressor assembly from the chassis.
Mount the compressor assembly to the back
mounting plate using the existing hardware. Do
not overtighten the mounting screws.
Reconnect the hoses clamps, (as supplied with
the compressor replacement kit.) and wiring.
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