4.0 - MAINTENANCE
1. Periodically check the c hemical tank level to a void 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 co uld be caused by the wearing 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 h ydraulic parts (valves and filter). We cannot say h ow
often this cleaning should be done as it depends on the type of a pplication, we also ca nnot 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 m m minimum distance between the
contact.
b- disconnect discharge hose from the pipework;
c- remove the suction
hose (with filter) fro
m 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 a cid 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 tu be nut has loosened, or mo re 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.
1
-
POWER SWITCH ON, PUMP TURNIG BUT THE ADDITIVE IS NOT INJECTED
a. Check the i ntegrity of suctio n and di scharge tubes. Should the t ubes be swollen, check t ube 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
1
-
POWER SWITCH ON, PUMP DOESN’T TURN
a - Check p ower supply (socket, plug), if t he pump doesn’t work contact manufacturer Customer Service, Dealer or
Distributor.
ATTENTION: When removing the metering pump fro m the pla nt, be c areful as there might be some residual
additive in the discharge hose.
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