4 Operation
4.1 Start-up
The pump must only be commissioned by trained staff.
4.1.1 Oil Filling for the Gear
The SP 250 is supplied without oil in its gear. Before commissioning, the
separately supplied gear oil must be filled into the gear.
When doing so make sure that all aids used are clean so as to avoid con-
taminating the oil.
Use only lubricating oil which has been approved by Leybold.
The gear oil should be filled in at room temperature. At lower temperatures,
the oil is thicker so that there then is the risk of overfilling gear chamber
with oil.
For filling in oil, the cover section on the discharge side must be disassem-
bled see fig. 4.1. For this unlock the closure screws at the cover and remove
the cover section.
For the closure screws you will require a special square key. This key is
included in the delivery.
Remove the oil fill plug and fill in the lubricant. When doing so, make sure
that the oil level, after filling, will be at the level of the maximum Mark during
standstill (see fig. 4.2) of the pump.
The entire oil filling quantity amounts to 7 litres. Since after testing and drain-
ing the lubricant, some oil remains within the pump only approximately 4 litres
of oil are filled in during initial commissioning and after the oil change.
Overfilling the gear chamber can result in leakages through the drain and also
into the pump chamber.
Clean the oil fill port and screw the oil fill plug in again using a gasket which is
in perfect condition.
The oil fill port must be sealed air-tight.
For checking the oil level and for changing the oil see Section 5.2.
When switching the pump on and off the oil level may fluctuate visibly. During
operation of the pump the oil level will be between the maximum and the
minimum mark. As soon as the oil level during operation of the pump drops
to the minimum mark, oil must be topped up.
During operation the oil level will be approximately 15 mm below the standstill
level.
CAUTION
NOTICE
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