Grundfos LSV Series, Installation And Operating Instructions Manual

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Motor bearings
Lubricate the motor bearings in accordance with the
indications on the motor nameplate.
Grease specifications: See
Ball-bearing grease
below.
Ball-bearing grease
1)
Grundfos recommends KYODO YUSHI
MULTEMP SRL, Shell Gadus S2 V2202 or SKF
LGHP 2 grease for relubrication.
7. Taking the product out of operation
The following shutdown procedures apply to most
normal shutdowns. If the pump is inoperative for a
long time, follow the storage procedures in section
7.2 Long-term shutdown
.
1. Always close the outlet or throttle valve before
stopping the pump. Close the valve slowly to
prevent hydraulic shock, but make sure that the
pump does not run against a closed valve for
more than a few seconds.
2. Switch off the power supply to the motor.
7.1 Short-term shutdown
1. For overnight or temporary shutdown periods
under non-freezing conditions, the pump may
remain filled with liquid. Make sure the pump is
fully primed before restarting.
2. For short or frequent shutdown periods at
temperatures below 0 °C, keep the liquid moving
within the pump casing and insulate or heat the
pump exterior to prevent freezing.
7.2 Long-term shutdown
For long shutdown periods or to isolate the pump for
maintenance, close the inlet and outlet valves. If no
inlet valve is fitted and the pump has positive inlet
height, drain all liquid from the inlet pipe to terminate
the liquid flow into the pump inlet port. If applicable,
turn off any external source of cooling or lubricating
liquid to the stuffing boxes or shaft seals. Remove
the plugs in the pump drain and vent tappings, as
required, and drain all liquid from the pump casing.
Remove the stuffing box glands and packing rings, if
applicable.
1. After draining the pump during long shutdown
periods under freezing conditions, blow out all
liquid in passages and air pockets using
compressed air. You can prevent freezing of
pumped liquid by filling the pump with antifreeze
solution.
2. Monthly rotate the shaft by hand to coat the
bearings with lubricant and delay oxidation and
corrosion.
3. Where applicable, follow the motor
manufacturer's storage recommendations.
Manufacturer Lubricant
KYODO YUSHI MULTEMP SRL
1)
Shell Gadus S2 V2202
1)
SKF LGHP 2
1)
Exxon Polyrex
Chevron
SRI grease NLGI 2
Black pearl NLGI 2
Philips Polytac
Texaco Polystar RB
CAUTION
Hot or cold surface
Minor or moderate personal injury
- Make sure that the escaping water does
not cause injury to persons or damage
to the motor or other components.
- In hot-water installations, pay special
attention to the risk of injury caused by
scalding hot water.
- In cold-liquid installations, pay special
attention to the risk of injury caused by
cold liquids and cold surfaces.
WARNING
Harm to health
Death or serious personal injury
- Do not use antifreeze solution if you use
the pump for public or potable-water
supply.
Do not tighten the vent screw or refit the
drain plug until the pump is to be used
again.