Daikin Pathfinder AWV Installation, Operation And Maintenance Manual page 92

After the compressor has been pumped down and isolated,
the oil contained inside the filter housing will remain hot
enough to cause burns for some time afterwards. Always
allow sufficient time for the oil to cool down so that it is cool
enough not to be a danger when drained off (less than 35°C is
recommended). Severe injury from burns can result.
Figure 91: Oil Filter Housing Cover Plate
Oil filter assembly components are:
• Oil Filter – 250 mm
• Oil Filter Housing Cover
• O-Ring – 89.5x3
• O-Ring – 76.1x3.4
• (6) M8 Bolts
Disassembly Procedure
1. Unscrew and remove two hex head side cover bolts 180°
apart. Insert M8 guide studs into the vacant holes.
2. Remove remaining bolts and oil filter housing cover.
3. Pull the oil filter off of the spigot and withdraw the oil filter
from the housing and clean the housing.
4. Clean oil filter housing cover plate and all other
components.
Fitting a New Oil Filter Element – Reassembly
Before reassembly, remove any paint from joint faces. Inspect
parts individually for damage and ensure they are completely
IOM 1242-8 • PATHFINDER
WARNING
MODEL AWV CHILLERS
®
clean before laying them out on a clean surface in a logical
order ready for reassembly.
Use fresh refrigerant oil to lubricate parts during reassembly.
1. Install new O-rings on the oil filter housing cover.
2. Insert new oil filter into the housing, ensuring the filter
sits tightly on the sealing spigot.
3. Replace the oil filter housing cover.
4. Evacuate air and noncondensables before valving
refrigerant back into the compressor.
Electrical Terminals
Electric equipment can cause electric shock which will cause
severe personal injury or death. Turn off, lock out and tag all
power before continuing with following service. Panels can
have more than one power source.
Periodically check electrical terminals for tightness and tighten
as required. Always use a backup wrench when tightening
electrical terminals.
All-Aluminum Condenser Coils
The condenser coils are an all-aluminum design including
the connections, microchannel, fins (an oven brazing process
brazes the fins to the microchannel flat tube), and headers
(see "Microchannel Coil Cross
the possibility of corrosion normally found between dissimilar
metals of standard coils.
During the condensing process, refrigerant in the coil passes
through the microchannel flat tubes, resulting in higher
efficiency heat transfer from the refrigerant to the airstream. In
the unlikely occurrence of a coil leak, contact Daikin Applied to
receive a replacement coil module.
Figure 92: Microchannel Coil Cross Section
92
System Maintenance
DANGER
CAUTION
Section"), which eliminates
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