Grundfos SE - Startup

3. Carry out similar measurements at the end of the
power cable.
During the pump check, the Pt1000 sensor must be
connected to a recording device.
5.3.4 Pump vibration sensor (PVS 3)
The PVS 3 sensor monitors the vibration level to
protect the pump and the pipe network against
damage.
A change in the vibration level indicates an abnormal
situation. Make sure that a service inspection is
carried out before the pump or the pipe network is
damaged.
Pumps are fitted with S-tube
®
impellers.
The S-tube
®
impellers are wet-balanced to
reduce vibrations during operation. If these
pumps are started with the pump housing
containing air, the vibration level can be
higher than in normal operation.
SM 113
The SM 113 module is used for collecting and
transferring sensor data. SM 113 works with IO 113
through power line communication using the
Grundfos GENIbus protocol.
SM 113 collects data from the following devices:
• 3 current sensors, 4-20 mA
• 3 Pt1000 thermal sensors
• 1 PTC thermal sensor
• 1 digital input.
SM113 is fitted with a 2.7 kΩ resistor to
avoid false sensor alarms in the IO113.
IO 113
The IO 113 module is the interface between a pump
with analogue and digital sensors and the pump
controller. The most important sensor data are
indicated on the front panel.
One pump can be connected to IO 113.
With the sensors, IO 113 is a galvanic separation
between the motor voltage in the pump and the
connected controller.
IO 113 enables the following functions:
• overtemperature protection
• monitoring the sensors for analogue
measurement of:
- motor temperature
- pump vibrations
- stator insulation resistance
- bearing temperature
- moisture in motor
• stopping the pump in case of alarm
• monitoring remotely the pump through RS485
communication (Modbus or GENIbus).
Measurement of insulation resistance
IO 113 measures the insulation resistance between a
stator winding and ground:
• resistance above 10 MΩ = OK
• resistance between 10 MΩ and 1 MΩ = warning
• resistance below 1 MΩ = alarm.
6. Startup
DANGER
Electric shock
Death or serious personal injury
‐ Make sure the pump is grounded.
Pumps in dry installation must be vented.
Before the first startup and after a long
standstill period, make sure that the pump
is filled with the pumped liquid.
Make sure that the pump is filled with the
pumped liquid.
Dry-running is not allowed.
In case of abnormal noise or vibrations,
stop the pump immediately. Do not restart
the pump until the cause of the fault is
identified and eliminated.
Proceed as follows:
1. Remove the fuses or switch off the main switch.
2. Check the motor liquid level in the cooling
chamber. Checking the motor liquid
3. Check if the impeller can rotate freely.
4. Check if the switches are closed, replace if
necessary.
5. Check whether the monitoring units, if used, are
operating properly.
6. For pumps in a submerged installation, make sure
that the pump is submerged in the liquid.
7. For pumps in dry installation, make sure that there
is liquid in the pit.
8. Open the isolating valves, if fitted.
9. Check if the system is filled with liquid and vented.
10. Check the settings of the level switches.
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English (GB)