Graco AquaMax 2335E: 3 Before starting the cleaner

8

1)

 Options / model variants

Original instructions

English

Connecting the high pressure 

hose

Assembling the cleaner

Machines without high pressure 

hose reel.

Machines with high pressure hose 

reel.

3  Before starting the cleaner

9

1)

 Options / model variants

Original instructions

English

Installation guide

               c                       c

BA valve

  (a) 

Female 

  coupling

  BA 

valve

  (b) 

Male 

  coupling

Maintenance

1.  Mount a male coupling on the water tap.

2.  Connect (a) on the BA valve to the water tap.

3.  Mount a female coupling on the water inlet hose.

4.  Connect (b) on the BA valve to the water inlet hose.

5.  Connect the water inlet hose to the high pressure washer. 

6.  Turn on the water and start the machine.

At least once a year, check the function as follows:

1.  After work, switch off the high pressure cleaner.

2.  Close the water tap valve. 

3.  Release the pressure in water the supply hose by triggering the 

spray pistol.

4.  Dismount the backflow preventer. Water has to come out of the 

drain opening (c) (max. 100ml) to ensure separation of the potable 

water.

5.  If this is not the case, try cleaning the BA valve or contact your 

GRACO representative.

CAUTION

• 

The backflow preventer can be mounted either vertically or hori-

zontally, and the drain opening (c) must be mounted pointing 

downwards. 

• 

Water flowing from the drain opening (c) must be able to flow 

freely. 

• 

If there is a risk of running sands in the inlet water (i.e. from your 

own well), an additional filter should be mounted between the 

water tap and backflow preventer. 

• 

The length of the hose between the backflow preventer and the 

high pressure washer must be at least 12 metres (min diameter 

3/4 inch) to absorb possible pressure peaks.

• 

As soon as water has flown through the BA valve, this water is 

not considered to be drinking water any more.

• 

Protect the backflow preventer to any exposure to frost. 

• 

Keep the backflow preventer clean, and free of dirt.

This high pressure washer/cleaner is only allowed to be con-

nected with the drinking water mains, when an appropriate 

backflow preventer has been installed, Type BA according to 

EN 1717.

The BA valve can be ordered under number:

• 

BA valve including GARDENA couplings: 106411177

• 

BA valve including NITO couplings: 106411178

• 

BA valve including GEKA couplings: 106411179

• 

BA valve without couplings: 106411184

The couplings can be ordered under number:

• 

3/4” GARDENA (a): 32541

• 

3/4” GARDENA (b): 1608629

• 

3/4” NITO (a): 1602945

• 

3/4” NITO (b): 1600659

• 

1/2” NITO (b): 1604669

• 

3/4” GEKA (a): 1718

• 

3/4” GEKA (b): 1311

10

1)

 Options / model variants

Original instructions

English

Connecting the water supply

1.  Rinse the water supply hose 

briefly in order to prevent 

sand an other dirt particles 

entering into the machine.

2.  Connect water supply hose to 

the machine.

3.  Open water tap.

Electrical connection

Before connecting devices with voltage changeover

1)

: Check that the 

pre-selected voltage on the machine corresponds with the voltage of 

the electrical installation.

CAUTION

• 

In the case of poor water quality (sand, etc.), we recommend that 

a fine water filter is fitted in the water inlet.

• 

We recommend the use of a textile-reinforced water hose with a 

nominal diameter of min. 3/4” (19 mm).

CAUTION

• 

Only connect the machine to an installation with earth connection.

• 

The electric installation shall be made by a certified electrician.

• 

According to IEC 60364-1 it is strongly recommended that the 

electric supply to this machine should include a residual current 

device (GFCI).

• 

Do not damage the power cord (e.g. by driving over it, pulling or 

crushing it).

• 

Disconnect the power cord by grasping the plug only (do not pull 

or tug the power cord).

CAUTION

• 

When using cable reels: Due to the risk of overheating and fire, 

always unwind the power supply cord fully.

• 

Cable connections should be kept dry and off the ground.

Extension lead

As an extension lead, only use the version specified by the manufac-

turer or one of a higher quality. 

When using an extension lead, check the minimum cross-sections of 

the cable:

Cable length

Cross section

< 16 A

< 25 A

up to 20 m

1.5 mm

2

2.5 mm

2

20 to 50 m

2.5 mm

2

4.0 mm

2