LEYBOLD RUVAC WH 2500, Инструкция по установке и эксплуатации

Страница: 62 / 82

Operation
62
130001398_002_C0 - 09/2016 - © Leybold
Before removing pump from the vacuum system, disconnect it from the
mains supply. Note any contamination affecting the pump. Comply with all
safety regulations. Notice safety information 0.2.
RUVAC pumps with a PFPE filling
must
upon removal from the system be
flooded with nitrogen and sealed off in a gas-tight manner because PFPE
does not have a conserving effect. For RUVAC pumps with synthetic oil we
recommend this protection measure.
Blow out the cooling water lines with compressed air. Avoid splashing water.
For transportation and storing of the pump, observe the information provided
in Section 2.
4.5 Changing from Vertical to Horizontal Flow
The RUVAC WH/WHU pumps are supplied as standard for vertical flow. The
WH/WHU 2500 can only be operated for vertical flow.
Moreover, the WH/WHU 4400 and 7000 may be converted from one flow
direction to the other. For this proceed as follows:
Unscrew the oil drain plugs and drain out the lubricant.
Seal off the bottom opening with the oil drain plug using a gasket which is in
perfect condition so that a vacuum tight seal is attained again.
Remove the feet, turn the pump by 90° as shown in the dimensional draw-
ings and mount the feet for the new direction of flow, see Sections 3.1.2 and
1.5.
Always make sure that proper lifting equipment is used and step back from
the pump when turning it. Getting hit by a tilting pump might result in serious
injury.
It is recommendable to tilt the pump on a soft surface to avoid damage to
the painting.
The longitudinal axis of the pump must remain horizontal so that no residu-
al lubricant can flow from the side chambers into the pumping chamber.
Fill in lubricant.
The valve in the pressure balance line of the RUVAC WHU is designed to
work with both vertical and horizontal flow of the pump.
WARNING
NOTICE