Waltron AQUALERT Aqualyzer 3051, Instruction Manual, Page: 27 / 70

Installation
26
Waltron User Manual
3051 Hardness Analyzer
3.6
ELECTRICAL CONNECTIONS
General information:

The electrical installation should be carried out by qualified personnel in accordance with
national or local regulations. Qualified Personnel means a person who has been fully
trained and has professional experience to avoid electrical hazards and dangers.

Service qualified personnel will receive the special key to open the analyzer’s enclosure.

Before servicing the analyzer or its parts that are electrically powered, turn off power to
avoid risks of electrocution.

To turn off power from an electrical device, it is necessary to interrupt the power line
using a circuit breaker or an isolating switch to be sure that there is no power in the area
to be serviced.

Protection against indirect contacts is guaranteed by efficient grounding of all isolated
metal masses.
o
Grounding screw is located in the upper left position inside the electrical
enclosure.
o
It will be user’s task to periodically check and guarantee the efficiency of
analyzer’s grounding.
Users and qualified maintenance personnel must proceed as follows:

Be careful of electrical shock and/or electrocutions labels placed on the analyzer.

Always isolate power before servicing the analyzer.
In case of loss of power, the analyzer stops and automatically restarts into standby mode as soon
as power is restored.
No maintenance should be carried out on the instrument
without first switching off the power.
3.6.1
AC POWER CONNECTION
The Waltron 3051 Hardness Analyzer is designed for operation with 110-220Vac, 50 Hz power.
All the connections must be made in accordance with national or local regulations. The analyzer
is equipped with a thermal switch (main power switch). It is always recommended that the
analyzer is connected to the mains via a circuit breaker or an isolating switch installed near the
unit.
To make changes to the AC power connections, it is necessary to remove the electronics
enclosure cover. The AC power connections are fed to a connector that sends the power to the
ON / OFF switch before reaching the analyzer. The connections are shown below in Figure 3.2.