Recommended Parts; Trouble Shooting - Seko MSA Serie Manual De Instalación

4.5 Recommended spare parts
In order to face normal service problems and to avoid possible waste of time, we suggest to keep
in stock a small supply of the following spares:
One membrane
Two sets of plunger packing
One suction valve complete
One discharge valve complete
When ordering spares, please indicate always the model and the serial number of the pump

5. Trouble shooting

Trouble Possible cause
The check valve is damaged or
polluted by fluid
The chemical level in the tank is
too low
The discharge tube is jammed
Disconnect motor from
Pump can
power supply
not work
The power supply cable
is disconnected
Position the knob at "zero" flow
rate
The voltage is not stable, burning
the motor
The chamber and tube remain
gas
The suction line is jammed
The suction head is too high
The fluid temperature is too high
The fluid viscosity is too high
Low
The check valve is too dirty
flow rate
or damaged
The suction line is incorrectly si
zed
The stroke length is wrongly
regulated
The speed of pump is abnormal
The discharge pressure is lower
Excessively
than suction pressure
big flow rate
Wrong stroke length
SPR0136037
Solution
Clean or replace new check valve
Inject more chemical
Clean and dredge the tube
Connect to power supply
Find the disconnected part and repair
Readjust the knob
Measure and rectify the voltage, repair or
replace new motor
Discharge the gas
Clean the suction line
Relocate the pump to reduce suction head
Cool the liquid
Reduce the viscosity( through heating or
dilution)
Clean or replace check valve
Check the length and diameter of suction line
Check and readjust stroke length
Choose power supply and frequency that
corresponds to that of motor label
Install back pressure valve
Check and adjust stroke length
Rev. 1.5 14