Maintenance
Cleaning the Sprayer
After finishing the spray application, empty the sprayer and wash all equipment in an approved decontamination area.
Relieve all pressure from the pump prior to disassembly or storage.
Pump Disassembly
1.Remove the
2.Remove lid and slide agitator off pump chamber.
Pump the lever with the trigger valve open until the discharge runs clear
WARNING!
Remove all chemicals and wash before storing the sprayer. Chemical products have different reactions and can cause damage to the sprayer components and the environment.
Unidentified chemicals left in the sprayer tank can pose a serious health threat to anyone servicing the unit and unaware of its presence!
3.Loosen the packing ring nut that secures the chamber to the tank, then push the chamber into the cylinder all the way and lock tabs together.
4.Turn the pump chamber 90° to unlock the cylinder from the tank.
5.Separate the pump cylinder from the pump chamber and pull the pump chamber out of the tank.
Remove the cylinder through the tank fill opening.
6.Remove the piston cup fastener from the chamber valve assy. using the 452284 maintenance tool. See page 6.
7.If required, remove cylinder diaphragm valve with a small screw driver or similar object as shown in figure below.
8.Clean or replace parts that are excessively worn.
Agitator
Push the chamber into the tank all the way
Screw Cap
Periodically clean and
lubricate the pump
chamber, piston cup and Lubricate actuating linkage with
a high quality lithium
grease.Lubricate (disassembly
required)
Lubricate
Troubleshooting: Lack of Pressure
SYMPTOM CAUSE REMEDY
Leakage through | Worn or dried out | Lubricate or replace |
the upper cylinder. | piston cups. | the piston cups. |
After pumping and | Cylinder diaphragm | Clean or replace the |
pressurizing the | valve not sealing | cylinder diaphragm |
chamber, the pump | properly due to | valve. |
lever drops rapidly | wear or impurities. |
|
when released. |
|
|
After pumping and | Chamber diaphragm | Clean or replace the |
pressurizing the | valve not sealing | chamber diaphragm |
chamber, the pump | properly due to wear | valve. |
lever rises slowly | or impurities. |
|
when released. |
|
|
Low pressure and | Pump chamber | Tighten screw cap |
pump lever hard to | filled with liquid. | at top of chamber. |
operate. |
| With an empty tank, |
|
| pump lever with trig- |
|
| ger valve open until |
|
| all liquid is purged |
|
| from pump. |
Assembly
1.Install the diaphragm valve in the cylinder and secure it using the installation tool. See figure below.
2.Assemble the piston cup fastener to chamber assembly.
3.To ease assembly and help prevent premature wear, lightly lubricate the piston cup with
4.Using the pump chamber, place the cylinder into its location in the tank. Turn the pump chamber 90°until the cylinder locks in place.
5.Reassemble the
6.Tighten the packing ring nut that secures the pump chamber to the tank.
Cylinder 
Diaphragm 
Valve
Removal 
Pump Chamber
Assembly
Remove cylinder
through the fill
opening
Grease here
during assembly
Cylinder
Diaphragm
Valve
Installation
Tool
