Disassembly And Inspection Of The Compression Chambers And Level Sensors; Reassembly Of The Level Sensors; Reassembly; Tightening Torque - SFA SANICUBIC Serie Manual De Servicio

UK
7 .5 .3 Disassembling and inspection of the compression chambers and
level sensors:
1. Unscrew (1 screw), unlock and lift the pressure switch from the cover.
2. Check that the funnels are not obstructed (grease, faecal matter etc.).
Clogged compression chambers indicate that the device has not been
properly maintained. It is recommended to clean the device at least every
6 months.
3. If necessary unclog the compression chambers.

7 .5 .4 Reassembly of the level sensors

Warning: Do not grease the level sensors' O-rings before reassembly.
1. Fully insert the level sensor in the compression chamber.
2. Screw the level sensor onto the cover.

7 .5 .5 Reassembly

During reassembly, observe the following points:
To reassemble the pump, observe the rules applicable to engineering goods.
Do not over-tighten the screws on plastic parts (risk of breaking the plastic)
and clamps.
Clean all disassembled parts and check their wear.
Replace damaged or worn parts with original spare parts.
Ensure that the sealing surfaces are clean and the O-rings are properly
installed.

7 .5 .6 Tightening torque

The tightening torque for screws and clamps is 2 ± 0.1 N.m
7 .6 Checklist for commissioning / inspection  and maintenance 
Operations
Read the operating manual.
Check the power supply.
Compare the values with those of the rating plate.
Check the connection of the power supply to the earth.
heck the connection of the power supply to a 30 mA GFCI breaker.
Check the proper operation of the motors by pressing the forced mode buttons.
If abnormal, make sure the pump is not clogged, check the resistance values of the
engine coils.
Where SANICUBIC 2 XL three-phase version is used, check the motor rotation direction
by dismantling the motor.
Check the sump tank.
Clean the tank in case of deposits.
In case of significant grease deposits in the tank from greasy wastewater
from artisanal or industrial businesses, inform the customer that they must install
a grease trap upstream from the pumping station.
Check the level sensors. Dismantle the pressure switches and make sure that the
dip tubes are not clogged. Clean them if necessary.
Check the control mechanism.
Dismantle the level sensor. Check if it is blocked or encrusted.
Clean them, if necessary.
Perform a functional test over several cycles.
Check the correct installation and state of wear of the flexible couplings.
Check the proper operation and effectiveness of the alarm device.
Check the proper operation and seal of the stop valves and check valves.
If applicable, identify the necessary spare parts.
Advise and/or train operating staff.
NOTE
Before working inside the pump during the warranty period, you
must consult the manufacturer. Our after-sales service is available
to you. Failure to comply leads to the loss of rights to damages.
Inappropriate work aiming to eliminate malfunctions. Risk of
injury!
w For all work intended to eliminate malfunctions, follow this
operating manual's instructions and / or the manufacturer's
documentation for the relevant accessories.
For any problem not described in the table below, contact SFA after-sales
service.

Problems encountered:

A The pump does not flow
B Insufficient flow
C Excessive current / power consumption
D Insufficient manometric delivery head
E Irregular and noisy operation of the pump
F Frequent faults reported by the pumping station
G Overflow of the pumping station
H Untimely start
Before working on pressurised components, reduce the pressure inside the
pump! Disconnect the pump from the electrical power supply.

8 . Incidents: causes and solutions

A B C D E F G H
- ✘ - - - ✘ - -
Required for
- ✘ - - - ✘ - -
➀ ➁
✘ - - - - ✘ - -
➀ ➁
- ✘ - ✘ ✘ ✘ - -
➀ ➁
- - ✘ - ✘ ✘ - -
➀ ➁
➀ ➁
✘ - - - - ✘ ✘ -
2XL three-phase version
✘ - - - - - - -
- ✘ - - - ✘ - -
➀ ➁
- - - - - ✘ - ✘
- - - - ✘ - - -
➀ ➁
✘ - - - ✘ ✘ ✘ -
➀ ➁ - - - ✘ - - -
- ✘ - ✘ - - - -
➀ ➁
➀ ➁
➁
➀ ➁
➀ ➁
➀ ➁
28
NOTE
After every flood, the pumping station should be inspected.
NOTE
After an incident, subject the pumping station to functional test
and visual inspection.
Possible cause
Pump flows against excessive
pressure.
The discharge valve is not fully open.
The pumping station is not ventilated.
Inlet pipes or wheel clogged.
Presence of deposits / fibres in the
wheel.
The rotor does not turn freely.
The engine is off.
Trigger of the thermal protection due
to excessive temperature.
Deposits in the sump tank.
The check valve is leaky.
Vibrations in the installation.
Faulty, clogged, pulled out or impro-
perly inserted level sensor.
Faulty capacitor
In the case of three-stage installation:
2 phases may be inverted.
To check, visually look at the motor
rotation direction by dismantling the
motor.
Solutions
The size of the pumping station
is insufficient for these operating
conditions.
Open the valve to the maximum.
Check the pumping station's vent
pipes
Remove deposits in the pump and/
or piping.
Check if the wheel turns freely without
blocking. If necessary, clean the pump.
Check the electrical installation (and
fuses).
The engine automatically restarts
after cooling.
Clean the sump tank. In case of grease
deposits, make sure there is a grease
trap.
Clean the check valve.
Check the flexible pipe connections.
Check the level sensor. Clean or replace
it, if necessary.
Replace the capacitor
With the connection, inverse 2 power
cable phases (5 wires).