Acromet WG-602 Manual
                                                | |
Contents
| 
93.3.2 DrainageA pressurized, vacuum, or gravity connection is required from the outlet of the flow cell. The flow cell maybe pressurized up to 7 psi (0.5 bar) and a ¼” FNPT fitting is supplied for the flow cell drain connection.3.4 Electrical Requirements and InstallationWaterGuard requires a 90-120 or 180-240 VAC, 50/60 Hz electrical power source on a separate 16Acircuit in the plant room’s electrical board. The main WaterGuard power supply should be connected to anon-dependent power supply, so that the unit remains powered constantly. The active relays should beconnected to a (pump) dependent power supply (interlocked power supply) to provide an additional layerof prevention against chemical addition and equipment operation when the main water supply is notoperating.3.4.1 Connecting the Main Electrical Power SourceThe Main Power Supply may be connected to either 90-120 or 180-240VAC 50/60Hz. Switching betweenvoltages is accomplished by changing two (2) jumpers located above the main power connection, to theleft of the transformer. For 90-120VAC, a 1amp fuse should be use; for 180-240VAC, a 0.5amp fuseshould be used. These changes must be completed prior to wiring.Caution: Before making a connection to a power source, confirm that both jumpers are located on thecorrect voltage and that the appropriate fuse is in place.6) Verify that the power switch or circuit breaker to the non-dependent power source is off.7) Connect the line (live) wire to the I/O board connector marked Line.8) Connect the neutral wire to the I/O board connector marked Neutral.9) Connect the earth wire to the I/O Module connector marked Ground.10) Continue with the other electrical connections.11) Turn on electrical power only after all electrical connections have been completed.For information on wiring and using the relays as dry contact or for control, see Appendix A.3.4.2 Input SwitchesFlow input switch terminal blocks on the I/O module allow for three input switches to be connected to thesystem as additional layers of security against accidental chemical additions when there is no flow. If aconnection is expected but not detected at each input, the analyzer/controller will indicate an alarm andwill close all relays (and open the alarm relay). Therefore, if a safety switch (flow, level, etc.) will not beinstalled, a fixed connection (jumper wire) is required to allow the controller to operate.Two flow switches and one flow meter may be connected:• Flow Switch (internal): Flow switch connected to flow cell of analyzer. Supports both 2 and 3 wireflow switches.o If a 2 wire switch is used, it should be connected to the “In” and “Gnd” connections. If a 3wire switch is used, the “VCC” connection will also be used.o If a rotating flow switch is used, the J25 jumper should be in place; if a float-type or otheron/off flow switch is used, the J25 jumper should be removed (to be used with the opencell analyzer models).• External Flow Switch: Connection for external 2-wire flow switch. If an external switch is notconnected, a jumper must be installed for the analyzer to operate properly. |
This manual is suitable for:
manualsdatabase
Your AI-powered manual search engine