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Idiomas disponibles
Idiomas disponibles
4.0 - MAINTENANCE
1. Periodically check the chemical tank level to avoid the pump operating without liquid. This would not dam-
age the pump, but may damage the pipework due to lack of chemical.
2. Check the pump operating condition at least every 6 months, pump head position, screws, bolts and seals;
check more frequently where aggressive chemicals are pumped, especially:
- the additive concentration in the pipework; a reduction of this concentration could be caused by the wear-
ing of the hose, in which case it needs to be replaced or by the clogging of the filter which then has to be
cleaned as in point 3 here below.
3. The Company suggests periodically cleaning off the hydraulic parts (valves and filter). We cannot say how
often this cleaning should be done as it depends on the type of application, we also cannot suggest what
cleaning agent to use as this will depend on the additive used.
Operating suggestions when dosing sodium hypochlorite (most frequent case):
a - disconnect the pins from the mains or by means of a onnipolar switch with 3 mm minimum distance between
the contact.
b - disconnect discharge hose from the pipework;
c - remove the suction hose (with filter) from the tank and dip it into clean water;
d - switch on the metering pump and let it operate with water for 5 to 10 minutes;
e - switch OFF the pump, dip the filter into a hydrochloric acid solution and wait until the acid finishes
cleaning;
f - switch ON the pump again and operate it with hydrochloric acid for 5 minutes in a closed-circuit, with
suction and discharge hose dipped into the same tank;
g - repeat the operation with water;
h - re-connect the metering pump to the pipework.
5.0 - PERISTALTIC PUMP TROUBLE-SHOOTING
5.1 - 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.
In this case they have to be replaced. After repair, the metering pump will need to be cleaned of additive
residues which can damage the pump casing.
- POWER SWITCH ON (GREEN LED ON), PUMP TURNIG BUT THE ADDITIVE IS NOT INJECTED
a. Check the integrity of suction and discharge tubes. Should the tubes be swollen, check tube material against
our chemical resistance compatibility chart.
b. Check clogging of the filter and foot valve.
c. Check clogging of the injection valve.
5.2 - ELECTRICAL FAULTS
- POWER SWITCH ON (GREEN LED OFF), PUMP DOESN'T TURN
a - Check power supply (socket, plug), if the pump doesn't work contact manufacturer Customer Service, Dealer
or Distributor.
- POWER SWITCH ON (GREEN LED ON), PUMP DOESN'T TURN
Check the correct setting of potentiometer knob. If rotating the knob clockwise the pump is still not turnig, con-
tact manufacturer Customer Service, Dealer or Distributor.
ATTENTION: When removing the metering pump from the plant, be careful as there might be some residual
additive in the discharge hose.
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