Daily
Monthly
Yearly
P
M
U
P
&
S
E
N
I
L
H
S
U
L
F
X
R
E
T
L
I
F
T
A
O
L
F
M
U
U
C
A
V
N
A
E
L
C
X
R
E
T
L
I
F
N
O
I
T
U
L
O
S
N
A
E
L
C
X
S
Y
A
W
R
I
A
T
E
L
N
I
K
C
E
H
C
X
E
N
I
H
C
A
M
E
L
A
C
S
E
D
X
S
E
H
S
U
R
B
R
O
T
O
M
M
U
U
C
A
V
K
C
E
H
C
X
MAINTENANCE
TROUBLESHOOTING
CHECK THIS
Solution tank is empty
Clogged spray tip
Pump not running
Valve on tool not operating
Solution path is clogged. Pump only runs when spraying occurs
Solution tank may be empty, or nearly empty
No power to pump. Test the switch. Test the pump motor.
Partially clogged solution path (hose, heater, tool)
Worn pressure switch in pump. Adjust pressure sensor in pump head.
Debris plugging cleaning tool or vacuum hose
Drain gate is not completely closed, or seals are damaged
Internal vacuum hose is cracked
Recovery tank lid is not closed, is cracked or gasket is damaged
Recovery tank is warped or cracked
Debris impeding air movement on vac motor impellors
No power to motor. Test the switch. Test the vacuum motor.
Trying to spray too long. Try spraying for 12 -15 seconds per cycle
Heat exchanger needs to be flushed
Wrong tool being used. Too much water passing through
Longer hose, or larger diameter hose, than standard
Heat switch is off
No power in the wall outlet — check to see if breaker has tripped
No power to heat switch — check power cord for ‘opens’
No power out of heat switch. Check power at Bi-metalic switch
Follow troubleshooting steps to isolate the problem. Call your distributor.
IF PROBLEM OCCURS
NO SPRAY
PUMP
DOESN’T
RUN
PUMP
PULSATES
LOW
SUCTION
NO SUCTION
LOW
HEAT
NO
HEAT
If you are unable to diagnose the problem, contact the company from which you purchased your Cobra-H3
