Problems: Possible causes and solutions

In Table 1, potential problems and their causes that the equipment may present are presented. Table 2 provides possible solutions for each cause. If equipment maintenance does not eliminate the problem or identifies a new issue or cause that cannot be resolved, please contact your supplier or manufacturer.

Table 1
Problems Potential causes
Product not dosed 1, 2, 3, 4
Flow lower than expected 2, 3, 5, 6
Excessive flow 7
Product leakage 3
Pump does not turn on 8, 9, 10
Pump does not calibrate pH/ORP (EXpH-ORP models) 11
Table 2 - Problems: Possible causes and solutions
Item Cause Solution
1 Air intake in the hydraulic system Check if the connections are in accordance with the instructions. Perform the dosing pump priming procedure.
2 Blocked valves Clean the valves or replace them if sediment removal is not possible.
3 Worn seals Inspect and replace the seals.
4 Ruptured diaphragm Contact your supplier or manufacturer to replace the diaphragm.
5 Excessively viscous liquid Reduce the suction height; if possible, reduce the product viscosity by diluting it.
6 Installation height Position the dosing pump or the reservoir to reduce the suction height.
7 Siphoning effect Change the injection point so that it is above the dosing pump and the chemical product reservoir.
8 Burnt fuse Contact the supplier.
9 Incorrect installation Check if the pump was installed according to the manual recommendations.
10 Operating voltage Check if the network voltage is compatible with the dosing pump voltage.
11 The pump does not calibrate pH/ORP Ensure that the electrode cable connections are correct both on the pump and the electrode; check if buffer solutions are not inverted. After this, clean the electrode and calibrate again. If the error persists, the electrode must be replaced.