Aircel DHT-100, Инструкция по установке и эксплуатации

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High Inlet Temperature Refrigerated Air Dryer
17
Filter Element Replacement
1. Depressurize the air system to release
the compressed air from the air dryer.
Notice: Shutting down the air compressor will
not depressurize the air dryer unit.
Close air line valves before and after
dryer and then depressurize unit.
Depressurize dryer by pushing the test
button on the dryer system drain until
there is no more pressure in the dryer
system.
2. Remove the filter bowl by turning the bowl
1/4 turn counter clockwise, be sure the O-ring
is in place on the top half of the oil filter
housing and that the O-ring seats properly. Air
leaks may occur if the O-ring is not secured
(important).
3. The same procedure applies when removing
the filter separator for changing the element (if
applicable).
Hot Gas By-Pass Adjustment
Check the refrigerant suction pressure gauge for
operation, if it requires adjustments perform the
following steps:
1. Do not turn off the dryer. Adjust only when no
air is passing through dryer.
2. Open the top cover to reach the valve.
3. If the refrigerant suction pressure is below
30 psig (R-134a), turn the adjustment bolt
clockwise (1/8 turn intervals) and allow a few
minutes for refrigerant to stabilize.
4. If suction pressure is above 45 psig (R-134a),
turn the adjusting bolt counter-clockwise.
5. Let the dryer operate for a few minutes and
read the suction pressure gauge. Continue to
adjust the valve until the pressure reads between
30-40 psig (R-134a).
Hot Gas By-pass adjustment