Aircel DHT-100, Инструкция по установке и эксплуатации

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High Inlet Temperature Refrigerated Air Dryer
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gas by-pass valve (or constant expansion
valve) to lower refrigerant pressure to
required settings.
2. Low refrigerant readings generally indicate:
• Low ambient temperature - Provide ambient
temperatures above 15°F.
• Refrigerant control setting too low - Adjust
hot gas by-pass valve (or constant expansion
valve) to raise refrigerant pressure to
required settings.
• Loss of refrigerant - Call Technical Service
or a qualified refrigeration service.
Condensate Removal
The high inlet temperature refrigerated air dryer
uses a refrigeration circuit to cool the compressed
air thus condensing the moisture. The moisture is
separated from the dry air and purged out through
an automatic drain.
1. Condensate downstream of dryer:
• If the unit is equipped with automatic drain
override switch, push manual override
button to test drain flow.
• Ensure automatic electronic timer (if
applicable) is functioning properly.
• Ensure moisture separator (and
coalescer) drain lines are free from blockage.
• If the unit is equipped with y-strainer,
disassemble and clean.
• If oil is downstream from the dryer:
- Oil coalescer element is saturated.
- Dryer not turned on during air usage.
WARNING!
Before any service or maintenance
work is performed on the high inlet
temperature series refrigerated air dryer
system, disconnect power supply and
lock out power supply and depressurize
system before performing maintenance
or service work.
Other
Sometimes a water or oil problem downstream
from the dryer can be identified by an inadvertent
action or inaction by the operator.
• Dryer not turned on before air usage.
• By-pass valves in wrong position.
• Air usage exceeding dryer capacity.
• Oil coalescer element not changed as
needed.
• Automatic drains not maintained.