Mikrofill 3, Техническая документация инструкция

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ELECTRICAL CONNECTIONS
TECHNICAL DOCUMENTATION 09
The Mikrofill 3 requires a permanent 230 V 50 Hz 1 phase fused supply rated at 3 Amp. The unit is internally fused
at 3 Amp (see electrical installation diagram below).
The unit also incorporates two BMS relays offering volt free contacts for the remote indication of low or high
pressure conditions within the system. These relays are also independently fused at 5 Amp to protect the
Mikrofill 3 from external electrical faults. Alternatively, if only a common fault signal is required by the BMS as
opposed to individual low and high alarms, a further volt free relay is included in the unit which can be used
to interlock the boiler or chiller control circuits. Should either the low or high alarm relay operate, then this third
relay will shut down the boiler or chiller and indication of any alarm situation will be shown on the display. The
relays are suitable for use on control voltages up to 250 V.
To access the wiring connections on the Mikrofill 3, the cover on the lower front of the unit will first need to be
removed by unscrewing the PZ2 screw located on the underside. Removing this cover will reveal a 12 way
terminal block, with each connection labelled 1 - 9 for the volt free relays (see electrical installation diagram
below), Live, Earth and Neutral. The wiring can be passed through the cable glands on the underside of the
unit, through an opening in the front casing, then connected as required into the terminal block.
Once the Mikrofill 3 has been correctly connected, the unit is ready for use. Ensure that the unit has a water
supply and that the service valves are open. Check for water leaks, switch on the electrical supply to the unit
and press the central power button on the front of the unit until the display illuminates. After a brief period, the
unit will start to fill the system. Once the system has achieved its set cold fill pressure, the unit will stop filling,
discharge a small amount of water to drain and then go to PRESSURE CORRECT .
ELECTRICAL DIAGRAM (WHEN NOT AT FAULT)
ELECTRICAL DATA
• Supply: 230 V 1 ph 3 Amp.
• Full Load Current: 1 Amp.
• Start Current: 1 Amp.
• Fuse Rating: 3 Amp.
• BMS Relays and Boiler / Chiller Relays: Volt Free Contacts rated at 250 VAC at 5 Amp.
• All relays are independently fused at 5 Amp.