Pulsafeeder PULSAlarm Pulsa Series, Инструкция по установке, эксплуатации и обслуживанию

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8.0 PULSAlarm® Reagent Head
The PULSAlarm® leak detection reagent head assembly consists of reagent head,
leak detection diaphragm, suction and discharge check valves, bleed port, and
optional switch and gauge. The reagent head, diaphragm, suction and discharge
check valves are the only parts of the pump to contact the process liquid;
consequently, maintenance is critical to pump performance.
9.0 PULSAlarm® Leak Detection Diaphragm
Double, or sandwiched, PTFE diaphragms are sealed at their peripheries to an
intermediate metal spacer ring. The space between the diaphragms is sealed so that the
diaphragm functions like a standard single diaphragm. The space between the
diaphragms is filled with a small amount of fluid. This space is connected to an electrical
switch (optional) that actuates in response to a buildup of pressure resulting from rupture
of either or both diaphragms.
Switch operation can be used to perform any external function, typically to signal an
alarm or turn off the pump.
During installation, ensure that adequate space is available around the reagent
head assembly to allow for service of both the pressure switch and the diaphragm
assembly.