Chapter 8: Troubleshooting - Labconco 3940200 User Manual

Chapter 8: Troubleshooting

PROBLEM
Blower won't
operate.
Low face velocity
or poor
containment of
contaminants.
Blower and lights
won't operate.
Lights do not work. Lamp not installed
Airflow monitor
malfunction.
70
CAUSE
Unit not plugged
into outlet.
Circuit breaker(s)
or Ground Fault
Interrupter.
Blower wiring is
disconnected.
Blower switch is
defective.
Motorized impeller
or blower is
defective.
Enclosure sash not
closed.
HEPA filter
clogged.
Carbon filter loaded
with chemicals.
Unit not plugged
into outlet.
Circuit breaker(s)
tripped.
properly.
Lamp wiring
disconnected.
Defective lamp.
Light switch is
defective.
Defective electronic
ballast.
No power.
No lights.
No display.
No audible alarm.
CORRECTIVE ACTION
Plug the enclosure into appropriate
electrical service.
Reset circuit breaker.
Inspect blower wiring.
Replace switch.
Replace motorized impeller or blower.
See Chapter 6.
Close sash to the lowest position.
Replace HEPA filter or increase speed.
Replace carbon filter.
Plug enclosure into appropriate
electrical service.
Reset or replace circuit breaker.
Inspect lamp installation.
Inspect lamp wiring.
Replace lamp.
Replace light switch.
Replace ballast.
Power cable to circuit board is
disconnected and needs to be
connected. Sensor cable needs to be
connected. Power supply is not plugged
into proper voltage; plug in power
supply. Verify that all airflow monitor
interface cables are connected. Check
fuses on enclosure.
Alarm has been temporarily silenced
using "SILENCE ALARM" or "enter"
buttons.