Milwaukee 4115 Operator's Manual download pdf (Page 12)

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Maintenance

General Recommendations

Regular maintenance will improve the performance and extend

the life of the Hose Powering System. See any authorized dealer

for service.

The Hose Powering System’s warranty does not cover items that

have been subjected to operator abuse or negligence. To receive

full value from the warranty, the operator must maintain the Hose

Powering System as instructed in this manual, including proper

storage.

NOTICE Should you have questions about replacing components

on your Hose Powering System, please call (800) 743-4115 for

assistance.

Before Each Use

1. Clean debris.

2. Check water inlet screen for damage.

3. Check hoses for leaks.

4. Check spray gun assembly for leaks.

5. Rinse out garden hose to flush out debris.

Hose Powering System Maintenance

Clean Debris

Daily or before use, clean accumulated debris from Hose

Powering System. Inspect cooling air slots and openings (D) on

the Hose Powering System. These openings must be kept clean

and unobstructed.

The Hose Powering System parts should be kept clean to reduce

the risk of overheating and ignition of accumulated debris.

 • Useadampclothtowipeexteriorsurfacesclean.

NOTICE Improper treatment of the Hose Powering System can

damage it and/or shorten its life.

 • DONOTinsertanyobjectsthroughcoolingslots.

Check and Clean Water Inlet Screen

Examine water inlet screen (E). If the screen is dirty, clean with a

small brush and water. If the screen is damaged, replace it.

Check Hoses

Hoses can develop leaks from wear, kinking or abuse. Inspect

hoses before each use. Check for cuts, leaks, abrasions, bulging

or damage to hose covering, and that couplings are not damaged

and rotate freely. If any damage is found, replace with Amplifi

brand heavy duty garden hose or equivalent with 400 psi

minimum burst pressure.

Check Gun and Nozzles

Examine hose connection to spray gun and make sure it is

secure. If water leaks from this connection, replace hose gasket.

Separate the trigger assembly from the sprayer assembly (see

Sprayer Removal/Reassembly. Check the o-ring located on the

trigger assembly connector tube. The o-ring is used to prevent

water leaks. Keep o-ring lubricated with silicone grease. Normal

usage will cause wear on o-ring and mating surfaces. Replace

o-ring if damaged.

Nozzle Maintenance

Excessive pump pressure can cause a pulsing sensation felt while

squeezing the spray gun trigger. The principal cause of excessive

pump pressure is a nozzle clogged or restricted with foreign

materials such as dirt, etc. A clogged nozzle could lead to pump

cycling ON/OFF or not turning on even when there is some flow.

To correct the problem, immediately clean the nozzle by following

these instructions:

1. Press the master ON/OFF switch to the OFF (O) position.

Remove power cord plug from electrical outlet.

2. Disconnect water supply at the Hose Powering System.

3. Pull spray gun trigger to relieve water pressure, then engage

the trigger lock.

4. Separate the trigger assembly from the sprayer assembly.

5. Use a cleaning wire or bent paper clip to carefully free any

foreign material clogging or restricting nozzle and water inlet

screen.

6. Using a garden hose, remove additional debris by back

flushing water through nozzle. Back flush between 30 to 60

seconds.

7. Reconnect the trigger assembly to the sprayer assembly.

8. Reconnect water supply to Hose Powering System and turn

on water.

9. Plug power cord into electrical outlet and press the master

ON/OFF switch to the ON (I) position.

10. Test the Hose Powering System by making sure each of the

five nozzles operate properly.

Pump and Motor Maintenance

The Hose Powering System does not require any maintenance

to the pump or motor. Both assemblies are pre-lubricated and

sealed, requiring no additional lubrication ever.

Battery Replacement

Replace batteries as described in Install Batteries Into Spray Gun.

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Milwaukee 4115 Operator's Manual Page 12

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