Trouble-Shooting Common To Pb Series; Mechanical Faults; Electrical Faults - Etatron PB Serie Manual Del Usuario

6.0 - TROUBLE-SHOOTING COMMON TO PB SERIES

6.1 - MECHANICAL FAULTS

As the system is quite robust there are no apparent mechanical problems. Occasionally there might be a loss of
liquid from the nipple because the tube nut has loosened, or more simply the discharge tubing-has broken.
Very rarely there may be losses caused by the breakage of the membrane, or by the membrane seals in which
case they have to be replaced by disassembling the four screws of the pump head fig. 11), when re-mounting
the pump head ensure that the screws are replaced properly, along with "O" ring.
After repair, the metering pump will need to be cleaned of additive residues which can damage the pump cas-
ing.
- THE METERING PUMP GIVES PULSES BUT THE ADDITIVE IS NOT INJECTED
a. Dismount the suction and discharge valves, clean them and replace, see position (fig. 11). Should the valves
be swollen, check valves material against our chemical resistance compatibility chart and fit correct valves.
Standard valves are Viton. Upon request Silicon, EPDM (Dutral), Nitryl and valves, ball check valve, K valve
can be supplied.
b. Check clogging of the filter.
ATTENTION: When removing the metering pump from the plant, be careful as there might be some residual
additive in the discharge hose.

6.2 - ELECTRICAL FAULTS

- GREEN LIGHT (1) SWITCH OFF, RED L.E.D. (3) OFF, THE PUMP DOES NOT PULSE
a - Check power supply (socket, plug, power switch ON ), if the pump doesn't work contact manufacturer
Customer Service, Dealer or Distributor.
- GREEN LIGHT (1) SWITCH ON, RED L.E.D. (3) OUT, THE PUMP DOES NOT PULSE
Check the following pages for specific trouble shooting for each pump type.
- THE DOSING PUMP GIVES ONLY ONE PULSE
Disconnect the equipment and contact manufacturer Customer Service, Dealer or Distributor.
- IN CASE THE ADDITIVE LEVEL IS BELOW THE LEVEL PROBE AND THE LEVEL ALARM IS STILL OFF:
Check the level switch connection, short circuit poles connector (Section 3.2 pos. 2), in case the alarm is on, replace
the switch;
if the alarm is off, contact manufacturer customer service, dealer or distributor.
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