8 Troubleshooting
Introduction
DANGER: Electrical Hazard
Troubleshooting a live control panel exposes personnel to hazardous voltages. Electrical
troubleshooting must be done by a qualified electrician.
Follow these guidelines when troubleshooting:
• Disconnect and lock out the power supply except when conducting checks that
require voltage.
• Make sure that no one is near the unit when the power supply is reconnected.
• When troubleshooting electrical equipment, use the following:
– Universal instrument multimeter
– Test lamp (continuity tester)
– Wiring diagram
Grounding of connection housing and stator housing
Both the connection housing and the stator housing must be grounded (earthed) always.
Time to zero energy state
This product contains high voltage capacitors that take time to discharge after the power
supply is disconnected. Voltage is present at the terminals and in the motor control unit
for up to one minute after the disconnection of the power supply.
The STOP function does not remove the voltages.
8.1 Dirigo
™
Service Tool
Description
Dirigo
™
Service Tool is a software application with connection hardware. The application
is for service personnel. The application is installed on any PC that fulfills the
requirements, and the PC is connected to the pump. The application is an alternative to
the gateway with HMI for some operations.
The application is used for troubleshooting, testing, and settings.
Parts
• Software application
• USB dongle
• CD-ROM with drivers
The USB dongle
The USB dongle is a USB-to-RS485 converter with terminals for T3 and T4. The USB
dongle is used for the connection between the PC and the pump.
Only use isolated USB dongles that are recommended by the local sales and service
representative.
Communication
The communication uses Modbus RTU.
PC requirements
The operative system of the PC must be Windows
™
7 or later.
The PC must be equipped with a CD-ROM reader or internet connection.
8 Troubleshooting
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