Installation, Operation and Maintenance manual
41
Downflo
®
Evolution
TROUBLESHOOTING GUIDE
Please consult other manuals if necessary (e.g. controls, fans, …)
Disconnect all power and compressed air supply before services.
Problem
Probable cause
Remedy
Fan blower and
motor do not start
Improper motor wire
size
Rewire using the correct wire gauge as specified by
national and local codes.
Not wired correctly
Check and correct motor wiring for supply voltage.
See motor manufacturer’s wiring diagram. Follow
wiring diagram and the National Electric Code.
Input circuit down
Check power supply to motor circuit on all leads.
Electrical supply
circuit down
Check power supply circuit for proper voltage.
Check for fuse or circuit breaker fault. Replace as
necessary.
Fan blower and
motor start, but do
not stay running
Incorrect motor
starter installed
Check for proper motor starter and replace if
necessary.
Access doors are
open or not closed
tight
Close and tighten access doors. See Filter
Installation.
Hopper discharge
open
Check that dust container is installed and properly
sealed.
Damper control not
adjusted properly
Check airflow in duct. Adjust damper control until
proper airflow is achieved and the blower motor’s
amp draw is within the manufacturer’s rated amps.
Electrical circuit
overload
Check that the power supply circuit has sufficient
power to run all equipment.
Clean-air outlet
discharging dust
Filters not installed
correctly
See Filter Installation.
Filter damage, dents
in the end caps,
gasket damage, or
holes in media
Replace filters as necessary. Use only genuine
Donaldson Torit replacement parts. See Filter
Installation.
Access cover(s)
loose
Tighten access doors securely. See Filter Installation.
Insufficient airflow
Fan rotation
backwards
Proper fan rotation is clockwise from the top of the
collector. The fan can be viewed through the back of
the motor. See Preliminary Start-Up Check.
Access doors open
or not closed tight
Check that all access doors are in place and secured.
Check that the hopper discharge opening is sealed
and that dust container is installed correctly.
Filter cartridge
covers not airtight
Tighten covers securely and check sealing