Johnson Pump SPX Flow CombiBlocHorti Series, Instruction Manual

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CL-CBH/EN (1901) 7.6
Maintenance 27
CombiLine-CombiBlocHorti
5 Maintenance
!
Flawed maintenance will result in shorter lifespan, possible break down and
in any event loss of warranty.
5.1 Bearings
Both motor bearings have been greased for their lifetime and require no maintenance.
5.2 Mechanical seal
A mechanical seal generally requires no maintenance, however, it should never be
allowed to run dry . If there are no problems, do not dismantle the mechanical seal. As
the seal faces have run in on one another dismantling usually implicates replacement of
the mechanical seal. If a mechanical seal shows any leakage it has to be replaced.
5.3 Environmental influences
• When a unit is out of operation and there is a risk of freezing, it is recommended to
drain the unit.
• Check motor for accumulation of dust or dirt, which might influence motor
temperature.
• The standard protection class of the electric motor is IP 55, this means that it is
'spray-water proof'.
!
Never spray water on hot pump elements! They may burst and hot water may
flow out.
5.4 Noise
The noise produced by a pump depends to a great extent on the operation conditions.
The values are stated in paragraph 10.6 "Noise data".
If a pump starts making excessive noise, this may point to certain problems with the
pump unit. A crackling noise can indicate cavitation or excessive motor noise can
indicate deterioration of the bearings.
5.5 Motor
Check motor specifications for start-stop frequency.