DWP 10

About this documentation

• Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free handling and use of the product.
  
• Observe the safety instructions and warnings in this documentation and on the product.
  
• Always keep the operating instructions with the product and make sure that the operating instructions are with the product when it is given to other persons.
  

Symbols

Symbols in this documentation

	Read the operating instructions before use.
	Instructions for use and other useful information
	Dealing with recyclable materials

Symbols on the product

	Read the operating instructions
	Maximum operating pressure
	Filling quantity
	CE test number

Product information

products are designed for professional users and only trained, authorized personnel are permitted to operate, service and maintain the products. This personnel must be specifically informed about the possible hazards. The product and its ancillary equipment can present hazards if used incorrectly by untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are printed on the rating plate.

• Write down the serial number in the table below. You will be required to state the product details when contacting Hilti Service or your local Hilti organization to inquire about the product.
  Product information

  Water supply unit	DWP 10
  Generation:	01
  Serial number:

Safety instructions

• Never tamper with or modify the product in any way.
  
• Never tamper with or modify the safety valve in any way.
  
• Children and minors may not use this product.
  
• Never fill hydrogen peroxide or other oxygen emitting media.
  
• On contact with materials of the water pressure tank, explosive pressure increases are possible.
  
• Check to ensure that the water supply unit does not exceed the maximum operating temperature.
  
• If it exceeds the maximum operating temperature, explosive pressure increases are possible.
  
• Watch the pressure gage at all times during pumping in order not to exceed the max. operating pressure.
  
• Empty the tank daily after use.
  
• Never leave residues in the tank.
  
• Store the product in a dry place where it cannot be accessed by children or unauthorized persons.
  

Product overview

1. Tank
   
2. Filling quantity display
   
3. Locating pin
   
4. Pressure gage
   
5. Safety valve
   
6. Pump
   
7. Hose plug-in nipple with ball valve
   
8. Hose
   
9. Hose plug-in nipple
   
10. Drain opening
    

Intended use

The product described here is a water pressure tank for distributing coolants and flushing liquids on drilling rigs, concrete saws or angle grinders. Water is generally used for this purpose.

Possible misuse

This product is not suitable for:

• Flammable liquids
  
• Hydrogen peroxide and similar oxygen emitting media
  
• Caustic substances (certain disinfectants and impregnating agents, acids, alkaline solutions)
  
• Liquids containing ammonia
  
• Solvents and liquids containing solvents
  
• Viscous or sticky liquids or those that form residues (paints, grease)
  
• Use in food sector
  

This product may not be used under any circumstances:

• With external pressure sources
  
• For warehousing and storage of liquids
  
• As an eye wash
  

Items supplied

Tank with pump, hose with connectors, instructions for use.
Other system products approved for use with this product can be found at your local Hilti Store or at: www.hilti.group | USA: www.hilti.com

Assembling water supply unit

1. Check whether the tank, pump and hose are undamaged before assembly.
   
2. Connect the hose on the drain opening [1].
   
3. Pump up the empty water supply unit to 2 bar [2].
   
   • The pressure must not drop by more than 0.5 bar within 30 minutes!
     
4. Pull the red button of the safety valve for checking [3].
   
   • The pressure must be released.
     

Fill water supply unit

1. Fill the water into the tank [1].
   
2. Check the fill level on the hose [2].
   
3. Route the transparent hose several times on the tank from top to bottom [3].
   
   • The liquid level in the hose and tank are equalized. The liquid level visible in the hose then matches the filling level in the tank, which you can read off on the scale.
     

Preparing water supply unit

1. Screw the pump into the tank [1].
   
2. Press the pump handle downward and turn it clockwise [2].
   
   • The pump handle has been released.
     
3. Generate a pressure of approx. 2 bar in the tank [3].
   
   • The maximum pressure should not exceed 6 bar (red line on the pressure gage). If the maximum pressure is exceeded, the safety valve is actuated and releases the excess pressure.
     
4. Press the pump handle downward and turn it counterclockwise.
   
   • The pump handle is locked.
     

Care and maintenance work

1. Check the unit at regular intervals.
   
   • We recommend having an expert conduct an external inspection every 2 years and an internal inspection every 5 years, as well as a strength test every 10 years
     
2. Dismantle the pump [1] and grease the O-ring [a] is and the sleeve [b].
   
3. Always carry out this maintenance after using the unit 50 times, however at least once a year!
   
   To help ensure safe and reliable operation, use only genuine Hilti spare parts and consumables. Spare parts, consumables and accessories approved by Hilti for use with the product can be found at your local Hilti Store or online at: www.hilti.group .
   

Troubleshooting table