Cleaning and maintenance
Operating Instructions LIQUIPORT EN
42
KNF Flodos | BA_LIQUIPORT_EN_11_153820.docx | Translation of original operating instructions, English
9.5 Checking that pump is leak-tight
WARNING
Danger of fluid system bursting due to overpressure.
The pump builds up pressure. In a closed system the max. permitted
operating pressure may be exceeded, thus causing damage to the
pump and/or the system.
-
In the case of parts that are in contact with the fluid, use only
those that are designed for the pump's operating pressure
-
Do not transfer media against shut-off elements or closed
systems, otherwise
-
install pressure relief/safety valve and set to 6 bar (in the
KNF product range)
In order to ensure correct assembly and hence reliability, it is essential
to perform a leak test.
Fig. 27: Pressure test setup
Set up the system as shown in Fig. 27.
Use distilled water as a test medium.
Set pressure control valve to working pressure.
Make sure that the fitting is leak-tight
(see Section 6.2.2).
Operate pump carefully for 5 minutes.
Check pump for leaks.
If no traces of medium are visible on the head, the pump can be used
in accordance with its specification (see Chapter 3).
Caution!
If it is found that liquid is escaping, under no circumstances should the
pump continue to be used.
Check that connections are leak-tight.
Check tightening torque of head screws.
Check that elastomer parts are clean.
Check leak-tightness again.
If these actions have no effect, contact your local KNF dealer and do
not under any circumstances continue to use the pump.
Summary of Contents for LIQUIPORT 1.100
Page 48: ...www knf com...
