Tennant 5400, Service Manual

Page: 157 / 163

ELECTRICAL
4-87
5400 330735 (3–01)
REPAIR OR REPLACE
21 BLK
SOLUTION SOLENOID DOES NOT OPERATE (BRUSHES WORK)
START
NO YES
TURN ON MACHINE AND
LOWER BRUSHES TO THE
FLOOR. TURN SOLUTION
SWITCH ON.
YES NO
REPLACE
SOLUTION SWITCH
NO YES
CHECK VOLTAGE AT
BRUSH CONTACTOR(CR2)
16 BLU TO 91 BLK AT
FUSE HOLDER
(TWIST ROLL GRIPS
DURING TEST)
REPAIR OR REPLACE
16 BLU
YES NO
REPLACE FUSE
GO TO
BOTH BRUSHES
DO NOT OPERATE
YES NO
CHECK VOLTAGE AT
SOLUTION SOLENOID
24 GRY TO 21 BLK
(TWIST ROLL GRIPS
DURING TEST)
CHECK FOR WATER
SUPPLY PROBLEM
REPAIR OR REPLACE
SOLUTION SOLENOID
YES NO
CHECK VOLTAGE AT
BRUSH CONTACTOR(CR2)
16 BLU TO 19 BLK
(TWIST ROLL GRIPS
DURING TEST)
CHECK VOLTAGE AT
SOLUTION SOLENOID
24 GRY TO 19 BLK
(TWIST ROLL GRIPS
DURING TEST)
CHECK VOLTAGE AT
SOLUTION SWITCH
16 BLU TO 19 BLK
(TWIST ROLL GRIPS
DURING TEST)
CHECK VOLTAGE AT
SOLUTION SWITCH
24 GRY TO 19 BLK
(TWIST ROLL GRIPS
DURING TEST)
REPAIR OR REPLACE
24 GRY