Operating instructions

Page 19
ProMinent
®
Product description S2Ba/S2Ca
Technical data
Corresponding to the type of pump, overflow valves are available for pressure stages p
nom
4, 7,
10, 12 and 16 bar with (1.05 ... 1.15) xp
nom
opening pressure.
Material in contact with metered medium
Material Balls Integrated
version overload
valve
PVT Ceramic / glass* PDFE/FPM or EPDM
SST Stainless steel Stainless steel/
1.4404 FPM or EPDM
*for 07120, 07220, 04350
FPM = Fluorine Rubber
WARNING
• The relief valve protects the metering pumps against non-permissible excess pressure caused
by the metering pump; it does not protect the station.
• Use the overflow value only in connection with liquid with a viscosity of up to max. 200 mPa s.
• When carrying out maintenance work on the overcurrent valve, pay attention to the tensioned
state of the pressure spring item132! Wear safety goggles!
IMPORTANT
• The ceramic ball and ball seat of the overflow valve are wearing parts. Slight leakage can
occur at the safety valve after a prolonged period of operation. The ball and ball seat
should be replaced if leaks occur.
• The bypass line must always be connected and must be routed back into the supply tank.
• The pump must not be operated without the bypass line connected.
• The bypass line must not be connected in the intake line (the bleeder function will no longer be
guaranteed). The bypass line must be routed back into the supply tank.
2.2.5 Diaphragm rupture sensor
Function:
Monitors the seals in the metering diaphragm. The liquid end can continue to function for a short
period in emergency mode, i.e. full operating pressure, no leakage, even after diaphragm rupture.
BA_SI_036_06_10_EN.p65 08.06.2010, 11:38 Uhr19