Karcher HD 4000 C System Installation, Placement, Connections, High-pressure Installation

English

G. System Installation

HD 4000 C / HD 6000 C

AUTHORISED PROFESSIONAL PERSONNEL ONLY

1. Placement

The system must be installed in dry indoor surroundings free from explosion hazard. The components shall be placed on firm and level ground, and the system must be easily accessible for the purpose of maintenance procedures. The room temperature must not exceed 40 °C.

Additional height-over-floor obtained through the use of the component feet

(140 mm length) facilitates maintenance ac- cess. In the absence of sufficient space the elastic feet can be used by themselves.

2. Connections

The water and waste-water connections, as well as the connection with the electrical mains network may only be carried out by licensed and authorised professional contractors pursuant to local regulations. In the Federal Republic of Germany the following regulations apply:

nVDMA guideline, standardised leaflet 24416 “Fixed-Installation High-Pressure Cleaning Systems”

nVDE Regulations (VDE = Professional Association of German Electricians)

nRegulations issued by local utility companies

Both the required water supply and the electrical mains network connection must be configured for permanent operation. The specified connective load values are stated in the Specifications.

The water supply must be equipped with a shutoff valve, and must be connected with the high-pressure by means of a flexible high-pressure hose. Insufficient supply line cross section or insufficient admission pressure will result in water starvation.

To prevent pump damage, a low-water condition will automatically result in system shut-down.

In the event of excessive admission pressure or the occurrence of pressure peaks in the mains network, the installation of a pressure regulator upstream of the system is mandatory.

The motor cooling circuit within the system requires a separate cold-water connection.

A water drain must be present at the installation site.

3. High-pressure Installation

The link between the fixed-installation pipe network and the system must be executed in the form of a flexible high-pressure hose connection.

The permanent pipe network installation must consist of as many straight runs as possible. All high-pressure tubing must be installed pursuant to regulations, using vibration-dampened strain relief and fixed pipe or tubing clamps, while allowing for longitudinal expansion/contraction due to the effects of temperature and pressure.

To keep pressure losses in the high- pressure lines as low as possible, the following recommendations should be used as mandatory guidelines:

Delivery	Tubing line	Hose size
volume
1000 L/h	NW 10 (3/8")	NW 8
2000 L/h	NW 15 (1/2")	NW 12
3000 L/h	NW 15 (1/2")	NW 12
4000 L/h	NW 20 (3/4")	NW 16
6000 L/h	NW 25 (1")	NW 20

It should be understood that the above guidelines still require additional allowances for the overall tubing length, the number of directional changes and armatures.

G1 5.956-648 A10369 (06/98)