13-9-666 Page 57
6.
Align the tabs on the filter element with the channels in the filter head and snap the element into
the filter head.
7.
Press the filter assembly into the filterstat assembly. Using a 1” socket tighten down the oil
filter, until the o-ring seals. Do not overtighten.
8.
Run the unit and check for leaks.
COMPRESSOR OIL COOLER - RADIATOR TYPE
(
Figure 1-5
, page 11) - The oil cooler motor and fan is
mounted on the oil cooler module; air is exhausted through the oil cooler and away from the unit. Do not
obstruct air flow to and from the oil cooler. Allow a minimum of three (3) feet clearance around the cooler.
Keep both faces of cooler core clean for efficient cooling of compressor oil.
Figure 5-9 – THERMOSTATIC MIXING VALVE ELEMENT
THERMAL CONTROL (THERMOSTATIC MIXING) VALVE
(
Figure 5-9
) is installed in system as shown in
Figure 5-3
, page 48. This valve is used to control temperature of the oil in both air-cooled radiator and
water-cooled heat exchanger type oil cooler systems. On start-up with unit cold, element is open to
bypass, allowing oil to pass directly from the reservoir to compressor during warm-up. As oil warms,
element gradually closes to the bypass allowing more of the oil from the cooler to mix with oil from the
bypass.
After the unit is warmed up, the mixing valve maintains oil injection temperature into the compressor at a
minimum of 150
°
F (66
°
C). This system provides proper compressor warm-up and helps prevent
moisture contamination of oil.
To check element, heat in oil - it should be fully extended at 150
°
F (66
°
C). If unit shuts down due to
high air discharge temperature, it may be that one or both thermostatic mixing valve elements (
Figure 5-3
,
page 48) are stuck open. Remove mixing valve and clean all parts thoroughly when flushing the oil
system.
Compressor, air/oil reservoir, separation chamber and all piping and tubing
may be at high temperature during and after operation.
COMPRESSOR OIL COOLER - WATER-COOLED HEAT EXCHANGER
(Figure 5-3, page 48) - The
heat exchanger oil cooler is a multiple pass type, with water in the tubes and oil in the shell. The oil
Summary of Contents for AUTOSENTRY EAQ99Q
Page 13: ...13 9 666 Page 12 Figure 1 6 AIR OIL FLOW DIAGRAM 202EDM797 Ref Drawing...
Page 42: ...13 9 666 Page 41 Figure 4 13 WIRING DIAGRAM WYE DELTA EBQ EBU UNITS 300EDM546 A Ref Drawing...
Page 43: ...13 9 666 Page 42 Figure 4 14 WIRING DIAGRAM FULL VOLTAGE EBQ EBU UNITS 302EDM546 Ref Drawing...
Page 49: ...13 9 666 Page 48 Figure 5 3 FLOW DIAGRAM AIR OIL SYSTEM 203EDM797 A Ref Drawing...
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