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English (US)
5.4 Starting the pump
1. Install a coupling guard.
2. Fully open the gate valve (if any) in the inlet line, and close
the gate valve in the outlet line.
3. If applicable, turn on any external source of cooling or
lubricating fluid to the shaft seals.
4. Fill the inlet line with liquid and completely prime the pump.
5. Start the pump.
6. Immediately make a visual check of the pump and inlet pipe
for pressure leaks.
7. Immediately after the pump has reached full operating speed,
slowly open the outlet gate valve, and open the bleed valves
at system high points. Do not open the outlet gate valve
completely until the system is full of liquid, purged of air and
checked for leaks.
8. After entirely filling the system, fully open the outlet gate valve
and close the system bleed valves.
9. If the pump is fitted with pressure gauges, open the gauge
cocks and record pressure readings for future reference.
Verify that the pump is performing in accordance with the
parameters specified in the performance curves.
10. Check and record voltage, amperage per phase, and
kilowatts, if a wattmeter is available.
6. Handling and storing the product
See section 8.8 Taking the product out of operation.
7. Product introduction
7.1 Applications
We recommend KP, KPV, KPVS pumps for these applications:
• circulation in heating and air conditioning systems, water
condensing and boiler feed systems
• liquid transfer and pressure boosting in various industrial
systems
• water distribution and water treatment in public water systems.
7.2 Pumped liquids
Use clean, thin, non-aggressive liquids, not containing solid
particles or fibers. Do not pump liquids that will attack the pump
materials chemically.
When pumping liquids with a density and/or viscosity higher than
that of water, pressure and flow will be reduced. Alternatively, use
motors with correspondingly higher outputs.
The stuffing box packing rings or the mechanical shaft seal O-
rings chosen must be suitable for the liquid to be pumped.
Special stuffing box packing rings or shaft seal O-rings may be
required if the pump is used for pumping treated water:
• at temperatures above 176 °F (80 °C)
• containing additives to prevent system corrosion, calcareous
deposits, etc. (this may be the case in heating and ventilating
systems).
When pumping liquids other than water, select an appropriate
stuffing box or shaft seal. For further information, please contact
Grundfos.
WARNING
Moving machine parts
Death or serious personal injury
- Mount an approved coupling guard before
operating the product.
For KPVS pumps, ensure the jacking screw (114) is
firmly seated and sealed by turning it
counterclockwise. This will prevent media leakage
during operation.
The absolute maximum operating temperature for the
pump is 275 °F (135 °C).
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