Troubleshooting Guide - Zenit BOXPRO Manuel D'utilisation Et D'entretien

BoxPRO – Translation of original instructions

23. Troubleshooting guide

Malfunction
EN
The pump does not work
The pump does not stop
The pump keeps on starting
and stopping
The pump starts but the cur-
rent overload device is tripped
immediately
The pump starts but there is
little or no outlet flow
The pump works but is too
noisy
ANNEX:
Concrete specifications
Refer to the EN206-1 and BS8500 standards. These two documents
must be read together.
A surveyor should be called in to establish the characteristics of the
terrain in which the system is to be installed and provide advice about
the type of concrete mix to be used.
The minimum recommended type of concrete is RC25, with slump
class of S2 for DC1 soil conditions.
For soil types other than DC1, the civil engineer or surveyor should
recommend the appropriate concrete.
10
Cause
No electrical power
Fuse/security circuit breaker tripped
Low motor voltage
Current overload device tripped
Control panel failure
Motor failure
Damaged cable
Impeller jammed
Float switches jammed in OFF position
Level setting error
Float switches jammed in ON position
Control panel failure
Float switches jammed
Float switch tripping level setting error
Valve damaged or obstructed
Loose electrical connections
Control panel failure
Impeller jammed
Outlet obstructed
Gate valve partially or completely closed
Pump connection to system faulty
Pump body/impeller obstructed
Impeller worn
Impeller turning in wrong direction
Type of pump selected not correct
Worn or damaged bearings
Impeller damaged or unbalanced
Dirt jammed on impeller
Remedy
Check the switches and connections.
Tighten the control panel terminals properly.
Check the cause of the fault on the fuse and/or circuit breaker and
reset.
Check the length of the wires and ensure that they are not causing
the loss of too much power.
Check the rating of the current overload device. If it trips again
immediately after being reset, the impeller has probably jammed.
Check and correct, if possible. Contact an authorised service
centre if necessary.
Check and correct, if possible. Contact an authorised service
centre if necessary.
Contact an authorised service centre for replacement.
Identify the cause of the jam and remove it. Clean the hydraulic
part of the pump thoroughly.
Check that the float switches move freely and are operating
correctly.
Check the float switch tripping levels and change them if necessa-
ry.
Check that the float switches move freely and are operating
correctly.
Check and correct, if possible.
Check that the float switches move freely and are operating
correctly.
Check that the tripping levels are correct and modify them if neces-
sary.
Check the valve. Clean or replace it.
Check and tighten the terminals.
Check and correct, if possible.
Identify the cause of the jam and remove it. Clean the hydraulic
part of the pump thoroughly.
Check and clean the outlet pipeline.
Open the gate valve and clean it if necessary.
Check and tighten the drainage system connections.
Check and clean the hydraulic part of the pump.
Contact an authorised service centre for replacement.
Check the electrical connections.
Check the rated performance of the pump installed in the technical
documentation and replace it if necessary.
Contact an authorised service centre for repair.
The engineer must also consider the type of terrain in which the sy-
stem is installed, such whether the installation is in peaty terrain.
The base of the pit may require reinforcement, depending also on the
loads to which the system is to be subjected.
Zenit will not accept any liability for damage to the lifting station deri-
ving from incorrect installation or the use of poor quality concrete.
No claims will be accepted unless a certificate from the supplier of the
mix guaranteeing its quality is submitted.
water solutions