Receiving The Product; Installing The Product; Mechanical Installation - Grundfos MTD Montage- Und Betriebsanleitung

2.2.2 Type key
Example MTD 250 -280 /2 A -W -D -B QQ P
Pump type
Pump size
Installation length [mm]
Number of impellers or stages
Pump version
A = Standard version
Connection
W = Internal thread
WB = Internal NPT thread
Impeller material
D = Ductile cast iron
Shaft seal
A = O-ring seal
B = Bellows seal
Seal ring material
B = Carbon
Q = Silicon carbide
U = Tungsten carbide
V = Ceramic
Rubber material
P = NBR
V = FKM

3. Receiving the product

The pump is delivered in packaging specially
designed for manual transport, or transport by forklift
truck or similar vehicle.
In order to ensure safe transport, we
recommend that you transport the pump
with suitable lifting tools.
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4. Installing the product

4.1 Mechanical installation

The pump is designed for tank mounting in vertical
position. The pump is positioned in a hole in the
cover of the tank (upper side). It is secured to the
tank by four or two hexagon head screws through the
holes in the mounting flange. We recommend that
you fit a sealing gasket between the pump flange
and tank.
4.1.1 Tank size
The recommended tank size is 3 times the pump
outlet volume per minute.
Use seal tape or liquid packing on threads
to avoid leakage from the pump and the
pipe connections.
Risk of damage to the pump. Pipes
connected to the pump must be supported,
so that their weight is not supported by the
pump.
Outlet tightening torque must be 50 Nm.