7. Installation
7.1 General information
Local rules and regulations must be taken into account when selecting a dosing pump for designing a
system, and for installation and operation. This applies to the selection of the appropriate materials for the
dosing pump, the handling of chemicals, and electrical installation.
Before installing the pump in areas with a potentially explosive atmosphere, the dosing pump must be
checked to ensure that it meets the minimum requirements set by the applicable explosion protection
regulations. For this purpose, the data on the dosing pump rating plate must be compared with the local
requirements.
The technical specifications of the dosing pump (section 5) must also be taken into consideration, and the
system designed accordingly (e.g. pressure loss for pipe dimensions i.e. nominal diameter and length).
The designer and operating company are responsible for ensuring that the entire system, including the
dosing pump, is designed in such a way that no lasting damage occurs to system equipment or buildings in
the event of chemical leakage due to the failure of wearing parts (e.g. wear of the packing) or burst hoses.
If the chemical system represents a potential source of danger, the installation must be designed in such
a way that no unreasonable consequential damage occurs, even if the dosing pump fails. We therefore
recommend installing leakage monitors and collecting pans.
CAUTION
The FEDOS E/DX may not be used for dosing combustible and flammable fluids. For constructional reasons
piston pumps are not leakage-free. This must be taken into account in the design of the process and the
plant.
To increase dosing accuracy and ensure functional reliability, we recommend installing additional valves and
accessories. These include pressure control valves, pressure relief valves, leakage monitors and low level
indicators, as shown in the installation examples.
Always use appropriate tools for installation work. To avoid damage, never apply excessive force.
IMPORTANT!
To prevent seizing, threaded stainless steel parts (e.g. dosing head and valves) must be lubricated before
being assembled (e.g. with PTFE spray).
ATTENTION!
Check the lubricant for compatibility with the chemical.
7.1.1 Installation of FEDOS E with ATE servomotor
The ATE servomotor is connected to the dosing pump and adjusted at the factory. When installing, sufficient
installation space of at least 150 mm must be provided in order to allow later maintenance.
The electrical connection of the ATE drive must be made in accordance with locally applicable requirements
and may only be carried out by technical personnel. The wiring diagrams (chapter 7.4) show the standard
connection variant.
Cable type and cross-section must be chosen according to the motor data.
The cable passage through the housing must be made professionally. We recommend using gland con-
nections with strain-relief clamp. The required protection class must be ensured by professional-standard
installation of the electrical connections.
ATTENTION!
Note that the ATE servomotor can only be actuated when the main drive motor of the dosing pump is run-
ning. This means that the ATE servomotor must be locked electrically. Otherwise, the adjusting eccentric will
suffer excessive wear, or be destroyed.
Installation | Operating Manual FEDOS E/DX |
15
Содержание FEDOS E 5
Страница 47: ...Notes Notes Operating Manual FEDOS E DX 47...
