AirSep MN138-1 H - Manual (Page 17)

11
MN138-1 Rev H
02/14
Sound Level
The condition of the compressor’s cup seals, bearings, and other components can result in
an increased sound level. If the compressor’s cup seals or bearings wear to the point that they
become noisy, the concentrator may become noticeably louder, therefore compressor service or
exchange may be required.
4.3.1 Compressor Replacement
Some internal components, including the compressor may require
cooling down before component removal. Care should be taken when
removing all components.
Compressor Assembly Removal
To remove the compressor assembly, follow the steps below:
1. Set the unit’s I/ 0 switch to the “0” position and unplug the power cord.
2. Remove the front panel of unit.
3. Remove screws securing the compressor cover to the compressor enclosure, and
remove cover to access compressor assembly.
4. Locate the 2-pin wire connection labeled ‘compressor’ on circuit board, and
carefully disconnect connector from the circuit board.
5. Disconnect both wire connections from capacitor.
6. Remove the compressor by gently lifting it up and pulling it towards you at the
same time.
7. Disconnect output tubing from left side of compressor assembly.
Compressor Assembly Installation
To install compressor assembly, follow the steps below:
1. Locate new compressor assembly.
2. Attach output tubing to compressor. Turn tubing ¼ turn in counter-clockwise
direction and hold in that position while tightening fitting. If this is not done, the
compressor will lean forward and contact the enclosure cover.
3. Assure compressor assembly is installed correctly. All four compressor springs
must be installed on to their corresponding spring guides located on the bottom of
the compressor compartment.
4. The end of the temperature probe must be located within the compressor
compartment and positioned behind the compressor wires before installing the
compressor cover.
5. Care should be taken when reconnecting wire connections to the circuit board and
capacitor. Both sets of wires from compressor must be routed properly through
the loop on tie wrap mount located inside of the compressor compartment, up
through the small recessed area of compressor compartment in front of
temperature probe, and alongside the back of capacitor to avoid possible damage
when front cover is installed.
6. Compressor wires must be allowed to freely move within tie wrap loop. Care
must be taken to assure compressor wires are not pulled by loop of tie wrap
mount when properly installed. If new tie wrap is needed, it is important to
engage only the first few notches of the tie wrap.
7. Before installing compressor cover, assure compressor wires are not in contact
with compressor.
8. Leak test output tubing connection of compressor .