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Voltage Selection
Remove the top cover from the cabinet.
The VOLTAGE SELECT toggle switch is located on the right side of the
control box. Two ranges are available: 200-208V and 220-240V. Set the
switch for the appropriate range.
Replace the top cover.
Fault Interlock
Contact
A set of contacts is connected to a receptacle on the control panel. The
contacts are rated 10A/240V. This is not a power inlet or outlet. The
receptacle is isolated from the circuitry. Its ground pin is connected to the
chassis. The contacts are closed during normal operation and open when
the unit is turned off or when a fault is detected.
Fuses
The main fuses are 20 Amp RK5. The controller fuses are 1 Amp time delay.
Do not replace with an alternate amperage.
Single Phase Units
Remove the top cover from the cabinet.
The fuses are located on the right side of the control box.
Three Phase Units
Remove the top cover, the right access panel and the control box cover.
The fuses are located inside the control box.
Phase Rotation
Three phase units with three phase pump motors are equipped with a phase
rotation interlock. If the phasing is wrong, the controller will display
PHEr
and
the unit will not start.
Unplug the unit. Reverse any two power cord wires in the power cord plug.
Never remove the green ground wire.
Plug in the unit. The
PHEr
display should be off and the unit should start.
Summary of Contents for NESLAB System IV
Page 19: ... 18 Section VII Diagrams Flow Diagram ...
Page 20: ... 19 Rear View ...
