Generac Power Systems 2500 Diagnostic Repair Manual page 6

Section 1 Pump Troubleshooting
Problem 3 – Line Vibration
WATER SUPPLY
INLET LINE
VIBRATION
TEST 6 –
CHECK FOR
AIR LEAKS
TEST 7 –
CHECK INLET
VALVES
REPLACE INLET
VALVES
Problem 4 – No Chemicals
4
GOOD
BAD
REPLACE VALVES
CHECK
DETERGENT
SIPHONING TUBE
BAD
CLEAN OR REPLACE
TUBE and/or FILTER
HIGH PRESSURE
OUTPUT LINE
VIBRATION
TEST 6 –
CHECK FOR
AIR LEAKS
GOOD
TEST 7 –
CHECK
DISCHARGE
VALVES
BAD
CHECK LOW
PRESSURE NOZZLE
GOOD
INSTALLED
WATER SUPPLY INLET AND
HIGH PRESSURE LINE
VIBRATION
TEST 6 –
CHECK FOR
AIR LEAKS
GOOD
TEST 7 – CHECK
INLET AND
DISCHARGE
VALVES
BAD
REPLACE VALVES
Diagnostic Repair Manual