Operator Manual

OPERATION
84
T17 9020160 (3−2019)
Problem Cause Remedy
Reduced run time
Battery not fully charged Charge battery until the charger
automatically turns off
Defective battery Replace battery
Batteries need maintenance See BATTERIES in
MAINTENANCE
Faulty battery charger Replace battery charger
ES System does not operate ES button is turned off Turn on ES button
ES sensor in tank dirty or not in
correct position
Clean / reposition sensor
Clogged ES pump filter Clean ES filter
Water level in recovery tank too
low
Fill recovery tank approximately
half full
Water level in solution tank too low Fill solution tank
ec−H2O Model:
Warning and fault indicator
light blinking red
Mineral deposit build−up in module Flush module (See ec−H2O
MODULE FLUSH PROCEDURE)
ec−H2O Model:
Warning and fault indicator
light solid red
Clogged module Contact Tennant service
representative
Defective solution pump Replace solution pump
High pressure washer does
not operate
Parking brake not set Set parking brake
Thermal switch tripped on high
pressure pump motor
Let cool down
Solution pump circuit tripped Reset circuit breaker
Switch was on when machine was
started
Turn off / turn on switch
High pressure washer spray-
ing low pressure
Spray nozzle set to low pressure Adjust spray nozzle setting
Spray pump pressure knob turned
down
Adjust the spray pump pressure
knob
Poor live wand vacuum per-
formance
Clogged hose Remove clog
Torn seals on dry vacuum system Replace seals