Unauthorised Modification And Manufacture Of Spare Parts; Improper Operating Methods; Safety Of The System In The Event Of A Failure In The Dosing System; Technical Data - Grundfos DMH 25X Installation And Operating Instructions Manual

2.7 Unauthorised modification and manufacture of
spare parts
Modification or changes to the pump are only permitted following
agreement with the manufacturer. Original spare parts and
accessories authorised by the manufacturer are safe to use. Using
other parts can result in liability for any resulting consequences.

2.8 Improper operating methods

The operational safety of the supplied pump is only ensured if it is
used in accordance with section Technical data. The specified limit
values must under no circumstances be exceeded.
Explosion-proof pumps are identified from the pump and
motor nameplates. An EC declaration of conformity is pro-
vided in accordance with the EC directive 2014/34/EU, the
Note
so-called ATEX directive. This declaration of conformity
replaces the declaration of conformity in this manual.
Warning
To operate a pump which has been identified as an explo-
sion-proof pump for the dosing of inflammable media or
for operation in potentially explosive operating sites in ac-
cordance with the EC directive 2014/34/EU, refer to the
enclosed manual "ATEX-approved pumps" in addition to
this manual.
If the assumption is made that a safe operation is no longer
possible, switch off the pump and protect it against
unintentional operation.
This action should be taken
• if the pump has been damaged.
• if the pump no longer seems to be operational.
• if the pump has been stored for an extended period of time in
poor conditions.
2.9 Safety of the system in the event of a failure in the
dosing system
DMH 25X dosing pumps are designed according to the latest
technologies and are carefully manufactured and tested. However,
a failure may occur in the dosing system. Systems in which dosing
pumps are installed must be designed in such a way that the safety
of the entire system is still ensured following a failure of the dosing
pump. Provide the relevant monitoring and control functions for this.
6

3. Technical data

3.1 Identification

3.1.1 Nameplate
Pos. Description
1 Type designation
2 Product number
3 Serial number
4 Pump performance by frequency
5 ATEX designation
6 Country of origin
7 Marks of approval
8 Pump model
9 Production code (year and week)