Mytee Lite 8070 User Manual page 15

Pump runs but there is no spray.
Possible Causes
Blockage or kink some-
where in the line.
Air is in the pump.
Pump runs but there is no spray.
Possible Causes
On a new unit, the check
valve between the pump
and heater may hang up,
causing the flow of water
to be impeded or stop
entirely.
Solutions
Open the extractor and
check the hoses leading
to and from the pump for
any kinks or blockages.
Straighten out or unblock
hoses as necessary.
Prime the pump.
Remove QD off the ma-
chine and solution hose.
Make sure that the three-
prong clip on the inside of
the threaded end is evenly
aligned below the thread of
the QD.
Solutions
Remove the check valve
temporarily and check to
see if the pump will flow
water out of the pump out-
let hose when the pump is
turned on for a brief instant
in order to verify cause.
The remedy is to install a
new check valve. Observe
the proper orientation (flow
direction) of the check
valve.
Tip: the check valve may
be able to be temporarily
returned to service by
un-sticking the check valve
poppet with manipulation
of the poppet ball with a
thin tool, like a straight-
ened paperclip. Replace
the check valve in unit
assembly.
NEVER OPERATE A UNIT
WITHOUT A CHECK
VALVE IN PLACE.
5 - Troubleshooting
Pump runs for a second then shuts down.
Possible Causes
QD is pressure locked.
Possible Causes
The jet nozzle could be too
large.
Pump doesn't stop running.
Possible Causes
Leak somewhere in the
line.
Cracks or vacuum leaks on
inlet side of pump.
Seals have been degraded
by chemical.
Debris blocking inlet filter
or pump head.
Pump trips circuit breaker when turned on.
Possible Causes
Short in power switch.
15
Solutions
Relieve pressure from be-
hind the QD by pressing in
the button inside the QD.
Low PSI.
Solutions
Replace the jet with one
that has a smaller opening.
Solutions
Disconnect the solution
hose from the machine.
If this causes the pump
to stop running then the
problem is outside the ma-
chine, either in the solution
hose or tool. If it continues
running on, open the ma-
chine and check for leaks.
Repair the leak. If there are
no leaks, run Mytee's Sys-
tem Maintainer™ (Part #
3601) through the machine
to clear blockages.
Make sure hoses are
secured tightly. If the
inlet side of the pump is
cracked or damaged, re-
place the pump.
Install seal repair kit.
Clean filter and/or pump
head.
Solutions
Test by swapping vacuum
and pump switch. If prob-
lem resolves, but vacuum
begins tripping breaker, re-
place switch (Part #E515).