RDL
6. Comissioning, start-up/shutdown
Commissioning, Start-up / Shutdown
Compliance with the following requirements is of paramount importance. Damage resulting from non-
compliance shall not be covered by the scope of warranty.
6.1 Commissioning
Before starting up the pump make sure that the following requirements have been checked and fulfilled.
If a constant-level oiler is provided, screw same into the upper tapping hole of the bearing bracket prior to adding the oil (see
6.1.1). Seal with PTFE tape, if necessary.
The operating data, the oil level, if required (6.1.1), and the direction of rotation (6.1.4) must have been checked. The pump
set must have been primed (6.1.3).
Also verify the following:
- Make sure that the unit has been properly connected to the electric power supply and is equipped with all protection devices.
- Make sure that all auxiliary lines (5.6.3) are connected and functioning.
- If the pump has been out of service for a longer period of time, proceed in accordance with section 6.4.
6.1.1 Lubricants
Oil-lubricated bearings
The bearing bracket has to be filled with lubricating oil, the quality of oil required is outlined in section 7.3.2.
Fig. 20: Oil fill
Procedure:
Remove the protective cage of the constant-level oiler. Unscrew vent plug. Pour in the oil through the vent plug tapping hole
after having hinged down the reservoir of the constant level oiler until oil appears in the vertical portion of the connection elbow
(see Fig. 20). Then fill the reservoir of the constant-level oiler with oil and snap it back into operating position. Screw vent plug
in again. After a short time check whether the oil level in the reservoir has dropped. It is important to keep the reservoir properly
filled at all times.
The oil level should be checked with tie help of oil level sight glass & markings on bearing bracket
when the pump is in standstill condition.
6.1.2 Shaft seal
Usually, mechanical seals are fitted prior to delivery. On variants with quench supply tank, the tank must be
fitted in accordance with the G.A. drawing (see 6.1.3). Quench feed must also be provided during pump
shutdown. On variants with double-acting mechanical seals, apply sealing pressure as specified in the G.A. drawing/data-
sheet prior to starting up the pump (see 6.1.3). Sealing pressure must also be provided during pump shutdown.
For external liquid supply, the quantities and pressures specified in the data-sheet and G.A. drawing should
be applied.
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