Kewaunee Interceptor INT-1100A2 - Chapter 5; Troubleshooting

Maintenance and Technical Manual Chapter 5
Interceptor Biological Safety Cabinet Class II A2
October 2019
5.1
CHAPTER 5
Troubleshooting
Problem Possible Cause Recommended Fix
No lights or
fan
a. Unit unplugged Plug it in
b. BSC breaker open Reset breaker
c. Building breaker open Check outlet breaker
No fan
a. Sash not at operating height Move sash to operating height
b. Sash microswitch not activated Adjust microswitch position so switch is activated when
sash is at operating height
c. Motor control broken Replace motor control. If condition persists, motor may
need replacement. Contact Kewaunee for assistance.
Fluorescent
light not
working
a. Lamp burnt out (look for dark
rings at opposite ends of glass
uorescent tube)
Replace lamp
b. Lamp wiring defective Inspect and repair
c. Bad lamp ballast (symptom is
intermittent light)
Replace ballast located inside rooftop circuit box
UV light does
not illuminate
a. Sash must be closed for UV light to
work (regular glass blocks UV rays)
Close sash
b. Lamp burnt out Replace lamp
c. Lamp wiring defective Inspect and repair
d. Bad lamp ballast (symptom is
intermittent light)
Replace ballast located in electrical box
Reduced face
velocity
a. HEPA lter loaded Increase motor RPM or replace lter if 100 fpm
face velicity is no longer achievable
b. Towels have clogged towel screen
or visible ba󰀪e louvers
Clean towel screen
(see Chapter 5 User & Operation Manual)
c. Exhaust outlet clogged with debris Clear outlet
Table 5.1
Technical Support
For further technical assistance, contact Kewaunee at 704-873-7202 or
www.kewaunee.com.