14
7
Maintenance
7.1
Maintenance
WARNING
Disconnect the power supply to the
system before performing maintenance
work, and protect this disconnection.
WARNING
Remember that the motor can be hot
when it has just been switched off.
WARNING
Clean the pump with clean water before
carrying out maintenance work.
WARNING
Ensure that the guide clamp does not
become jammed on the guide bars if a
tackle is being used to remove the
pump from the drain.
Regular maintenance will promote the permanent
good operation of the installation. DP-Pumps has its
own maintenance department with specialised
engineers. A draft maintenance contract is available
upon request.
7.1.1
Maintenance schedule
The pump must be checked every 4000 operational
hours or at least once a year. We recommend
carrying out an overhaul every 5 years.
The maintenance interval should be adjusted when
operational conditions are heavier.
The bearings of the pump have been lubricated
for life and, therefore, do not require maintenance.
7.1.2
Oil chamber check
ATTENTION
All pumps have a closed, maintenance-
free system. Only the pumps of the DRK
type or in the HT or E version have a
checking option.
Check the oil chamber for any leaks of the seals.
1
Remove the inspection plug of the pump
housing.
2
Position the pump in a horizontal position with
the inspection opening downwards.
Any liquid that may be present in the pump housing
can now low out through the opening. Check the
composition of the liquid to discover any leaks.
Liquid
Cause
Clear oil
No leaks.
Lightly coloured oil
A small quantity of moisture is
allowed.
Water/oil
Not allowed; the seal or pump is
leaking
1
1.
Contact the supplier.
Overpressure
Not allowed; seal or motor is
leaking
1
