Danger Of Frost; Maintenance And Cleaning; Periodic Checks; Greasing The Bearings - DAB KV 3/12 Installationsanweisung Und Wartung

11.2 DANGER OF FROST: When the pump remains inactive for a long time at temperatures of less
than 0°C, the pump body must be completely emptied through the drain cap Fig. I, to prevent
possible cracking of the hydraulic components. This operation is advisable even in the event of
prolonged inactivity at normal temperature.
Do not close the drainage cap until the pump is to be used again.
When restarting after long periods of inactivity it is necessary to repeat the operations described
above in the paragraphs "WARNINGS" and "STARTING UP".
12.

MAINTENANCE AND CLEANING

12.1

Periodic checks

In normal operation, the pump does not require any kind of maintenance. However, from time to
time it is advisable to check current absorption, the manometric head with the aperture closed and
the maximum flow rate, which will enable you to have advance warning of any faults or wear.
12.2

Greasing the bearings

On some models which are provided with a grease nipple, the motor ball bearings must be greased
every 3000 working hours; this interval may be reduced in the case of heavy duty applications. So
top up with grease for high temperatures, -30 to +140°C, through the grease nipples provided. In
the event of seasonal operation, it is indispensable to apply grease also during the period in which
the machine is not in use.
Procedure for greasing the IP55 version (MEC 160-180): in pumps produced with degree of
motor protection IP55 and in which the bearings greasing system is provided, the grease discharge
hole is closed by a brass cap M10x1 situated at an angle of 90° to the grease nipple. Unscrew and
remove the cap M10x1, apply grease to the grease nipple using a suitable grease pump, continuing
until clean grease comes out of the discharge hole. Switch on the pump and let it run for about an
hour so as to bring the bearing(s) to running heat and thus enable the excess grease to flow out.
Screw the cap M1x1 back in place.
13.

MODIFICATIONS AND SPARE PARTS

Check that the leakage of liquid does not damage persons or
things, especially in plants that use hot water.
The electropump can only be dismantled by competent skilled personnel, in
possession of the qualifications required by the legislation in force. In any case,
all repair and maintenance jobs must be carried out only after having disconnected
the pump from the power mains. Ensure that it cannot be switched on accidentally.
If possible, keep to a maintenance schedule: expensive repairs or machine down
times can be avoided with a minimum expense. During maintenance schedule
discharge the condensate, if necessary present into the motor, through the hole,
removing the exhaust port plug (electropumps with IP55 Degree of motor protection
only).
If the liquid has to be drained out maintenance, ensure that the liquid coming
out cannot harm persons or things, especially in using hot water.
The legal requirements on the disposal of any harmful fluids must also be
complied with.
Any modification not authorized beforehand relieves the manufacturer of all
responsibility. All the spare parts used in repairs must be original ones and the
accessories must be approved by the manufacturer so as to be able to guarantee
maximum safety of the machines and systems in which they may be fitted.
ENGLISH
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