Grundfos DPK, Инструкция по эксплуатации

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English (GB)
7
5. Dismantling
5.1 General information
If the pump needs to be dismantled, either because it is choked
or damaged, follow the instructions in the following sections.
Parts are signalled by a position number and refer to drawings
and parts lists. Tools are signalled by a letter and refer to section
4. Service tools
.
Before dismantling the pump
• Disconnect the power supply to the motor.
• Remove the power cable in accordance with local regulations.
• Be aware of the centre of gravity of the pump in order to
prevent it from overturning.
This is especially important in the case of high pumps.
Before assembly
• Clean and check all parts.
• Replace defective parts by new parts.
• Order the necessary service kits.
• Always replace gaskets and O-rings when the pump is
overhauled.
During assembly
• Lubricate and tighten screws and nuts to correct torque. See
section
3. Tightening torques
.
5.2 Oil change
After 3000 operating hours or once a year, change the oil in the
oil chamber as described below.
If the shaft seal has been changed, the oil must be changed as
well.
Fig. 2
Position of oil screw on DPK
1. Place the pump on a plane surface with the oil screw pointing
downwards.
2. Place a container under the pump. The container must be
able to hold the oil of the specific pump. The quantity of oil for
the specific pump appears from the table below.
3. Remove the oil screw (pos. 193 - M12 x 20) and let the oil
drain into the container.
If 20 % of the liquid in the container is water, the shaft seal is
defective and must be replaced. You can see this at once as
water and oil will separate almost immediately.
4. Turn the pump so that the oil filling hole is pointing upwards.
WARNING
Pressurised system
Death or serious personal injury
- When loosening the screws of the oil chamber,
note that pressure may have built up in the
chamber. Do not remove the screws until the
pressure has been fully relieved.
TM
07
18
98
51
1
8
CAUTION
Biological hazard
Minor or moderate personal injury
- Dispose of used oil in accordance with local
regulations.
If the same shaft seal is still used, the motor will be
damaged within a short time.
Oil screw
pos. 193