HydraMaster MAXX 450D - Page 139

MAXX 450D/470D/Diesel Page 5-7
HydraMaster Corporation
10/24/02
2.0. Chemical flow is unstable or low
2.1. Air in lines. Check that all fittings and connections are tight and in good condition. Repair
or replace as necessary.
2.2. Filter screen in chemical jug is partially clogged. Inspect and clean.
2.3. Three-way chemical valve is faulty. Inspect valve for leaks between ports. Replace as
necessary.
2.4. Chemical metering valve is faulty or partially obstructed. Inspect valve and clean or
replace as necessary.
2.5. High pressure check valve is faulty. Remove and inspect. Clean or replace as
necessary.
3.0. Solution jug fills with water
3.1. Three-way chemical valve is defective. Inspect valve for leaks between ports.
Replace as necessary.
3.2. Inlet check valve in chemical pump is faulty. Remove and inspect valve. Clean or
replace as necessary.
4.0. Chemical in water box
4.1. Chemical pump diaphragm is faulty. Remove and inspect. Replace as necessary.
4.2. High-pressure check valve is faulty. Remove and inspect. Clean or replace as
necessary.