Mechanical Installation; Mounting The Pump; Dosing Head Connections; Connecting Hoses - Grundfos DMX 221 Installations- Und Bedienungsanleitung

2.2 Mechanical installation

2.2.1 Mounting the pump

Have a spanner and four M6 screws available. The screws are not included in the scope of deliv-
ery.
1. Place the pump horizontally on a wall bracket or a tank.
2. Fix the pump with the four screws. Tighten the screws gently in order not to damage the
housing.

2.2.2 Dosing head connections

C
Pos. Description
A Inlet valve, connection for the inlet line
B Outlet valve, connection for the outlet line
C Integral relief valve (optional), connection for the overflow line
Related information
• 2.1.1 Installation requirements

2.2.2.1 Connecting hoses

Hoses are to be connected to the valves with a connection piece.
1. Make sure the valve gasket is placed correctly.
2. Push the hose firmly onto the nipple or nozzle.
3. Secure the hose with the connection counterpart or a hose clip.
4. Screw the union nut onto the valve and tighten it.
B
A
WARNING
Chemical hazard
Death or serious personal injury
● For pumps with an integral relief valve, connect an overflow line to C.
DMX 221 | | 10