CAUTION: BEFORE DISASSEMBLING THE UNIT OR DOING ANY INSPECTING OF THE PARTS, MAKE
CERTAIN THAT THE POWER HAS BEEN CUT OFF AND THE BLOWER HAS COME TO A COMPLETE STOP.
NEVER RUN THE UNIT WITH THE ACCESS DOOR OPEN OR REMOVED.
PROBLEM
POSSIBLE CAUSE
REMEDY
Unit fails to start
No incoming power
Blown breaker or fuse
Primary voltage to motor contactor is below 10%
tolerance
Burned out motor
Tripped overload (3 Phase)
Check line voltage
Replace fuse or throw breaker
Take steps to increase voltage to primary
Replace motor
Reset overload protector
Unit runs slowly or
inadequate capture
velocity
Wired for wrong voltage or improper rotation
Dirty fi lters
Internal obstruction
Check input voltage
Check wiring diagram
Switch L1 & L2 (3-phase only)
Service / Replace fi lters
Check if damper is open
Check inlet for blockage
Check hoses for proper connection
Check hoses for holes
Vibration
Loose mounting bolts
Foreign objects in blower
Dirty disposable fi lters
Tighten bolts
Remove debris from blower
Service or replace fi lters
Unit runs for a
short period of
time and stops
Exhaust restrictor plate removed
Incorrect extension cord size (120V)
Re-install Restrictor plate
Plug directly into outlet
Use a cord rated to 20 Amps
Stronger resistance
during rotation of
the arm
Lack of grease in the rotating socket
Grease the rotating socket
Arm will not stay
where it is placed
The joints are loose
Tighten the joints
TROUBLE SHOOTING CHART
12
MICRO AIR
®
MC1500
CLEAN AIR SYSTEMS
