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16 Pyramid 8000
®
Series Purifiers (Bulletin 289)
SYMPTOM POSSIBLE CAUSE REMEDY
Refrigerant compressor running.
(REFRIG DISCHARGE tempera
-
ture light flashes, temperature is
outside normal range or alarm
set point is reached.)
1. Purifier turned on less than
one hour.
1. If light is still on after one hour, do not use puri
-
fier. Contact Deltech.
2. Loss of refrigerant charge.
2. Have refrigeration mechanic locate and repair
leak. Recharge.
3. Ambient temperature below
50°F.
3. Relocate purifier, or heat area.
Refrigerant compressor cut out
by high refrigerant head pressure
control.
1. Condenser fouled or clogged.
1. Clean condenser coils (see Maintenance,
Monthly).
2. Fan motor stopped. 2. Repair or replace fan motor.
3. Inlet air temperature too high.
3. Check aftercooler discharge temperature. Re
-
duce temperature to 120°F max.; reduce airflow if
temperature is higher than 100°F (see Airflow sec
-
tion).
4. Air in refrigeration system.
4. Have refrigeration mechanic locate and repair
leak. Recharge.
Liquid in particulate filter.
1. Failure of purifier drains or
automatic drain valves on after-
cooler/separator.
1. Shut down purifier. Check drain valves, clean,
repair or replace as necessary. Replace activated
carbon filter and catalyst vessel before restarting.
2. Failure of refrigeration system. 2. Check above symptoms.