Operation Testing - Little Giant VCMA Serie El Manual Del Propietario

High Level Switch Options
There are two options for connecting the high level switch:
1. The switch is factory wired to the NO and COM terminals. This configuration will open (break) an elec-
trical circuit when the switch is activated by a high water level in the reservoir, which can be used to
stop the condensing unit(s) of the heating/cooling system.
Refer to the thermostat and heating/cooling unit's Operating Manual for expected switch operation and
wiring connections. Connect the switch leads (7) in series with the low voltage thermostat circuit as
specified in the heating/cooling unit's operating manual.
2. The installer can reconfigure this switch to the NC terminal to close a low voltage circuit in the event of
high water level, which could activate an external alarm or relay (purchased separately).
Use the following procedure if an NC configuration is required:
NOTE: This procedure should be performed by a qualified service technician.
• Remove the pump's motor cover (4).
• Support the switch and carefully change the upper lead wire from the NO terminal (2) to the NC
terminal (3).
• Re-install the motor cover.
• Connect the switch leads in series with the low voltage external component as specified in the
component's manual.
Place the "Attention Service Technician" label included with the pump on the outside of the access panel in
a visible location.

Operation Testing

Risk of severe injury or death by electrical shock.
• Always disconnect the electrical power before touching the pump or discharge when water is pres-
ent in the area of the pump.
To test system operation, follow these steps:
1. Disconnect the pump from the power source.
2. Remove tank cover assembly from the tank.
• The cover snaps on to the reservoir.
• Pull out on the slot located on the long side of the white top.
Place a finger in one of the larger holes in the corner of the top
and lift to remove the top part of the pump.
• Carefully lift the cover assembly from the tank and hold level.
3. Turn on power to the pump.
4. Test pump operating switch by raising pump switch float.
• Motor should turn on before pump switch float contacts underneath side of tank cover.
5. Test high level switch by raising high level switch float.
• High level switch should activate before float contacts underneath side of tank cover.
• If wired to NO terminal, air handling device should shut down when float is raised.
• If wired to NC terminal, external component (alarm or relay) should activate when float is raised.
6. Disconnect the pump from the power source.
7. Replace the tank cover assembly.
8. Turn on power to the pump.
INSTALLATION
Operation Testing
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