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4.4 Motor protection:
The pump should always be connected to the line by means of a suitable motor
protection circuit breaker.
If the pump is started direct on line (DOL), the protection breaker should be set to the current, as
given on the data-plate.
For star delta start (YD), it is preferable to install the over current relay directly after the
main contact. In this case, the pump is also adequately protected in star-connection.
The maximum setting of the over current relay is 0.6 x the current as given on the data
plate.
It is preferable also to set the protection breaker at a 10% lower current, because all breakers
require at least 110% of the adjusted current before tripping.
4.5 Motor check:
If you in doubt about the condition of the motor, "Megger" test motor windings against grounding
wire.
The value should be at least 1 M-Ohm.
4.6 Pump seals:
Turn the impeller clockwise by hand, using a proper socket wrench.
Following this procedure sticking mechanical seal surfaces will be loosened smoothly.
4.7 Installation:
Check if all components for your installation are delivered. See also chapter 6.
Landustrie version 06-14 | Operation & Maintenance manual BTP-SERIES
Subject to modifications
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