Symcom PC-100-LLC-CZ, PC-200-LLC-CZ Installation Guide

INSTALLATION
INSTRUCTIONS

Rapid City, SD, USA, 10/2009

MODELS PC-100-LLC-CZ

PC-200-LLC-CZ

Revision A1

II_PC-XXX-LLC--CZ_A1

2880 North Plaza Drive, Rapid City, South Dakota 57702

[phone] · [phone] · fax [phone]

BE SURE POWER IS DISCONNECTED PRIOR TO INSTALLATION!

FOLLOW NATIONAL, STATE AND LOCAL CODES.

SymCom’s PumpSaver

READ THESE INSTRUCTIONS ENTIRELY BEFORE INSTALLATION.

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Model PC-XXX-LLC-CZ liquid level controllers are used to detect the
presence of conductive liquids and control the operation of a single pump. The line voltage must be
specified in the part number.

These devices use two probe inputs (a High Probe and a Low Probe, with a tank or probe common)
to determine whether to start or stop a pump. The inputs to the PumpSaver

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are usually liquid level
sensors that sense a decrease in resistance between the probes when liquid contacts the sensors.
Pump-up or pump-down operation may be selected by turning the adjustment knob to the left or
right side of center on the sensitivity range. See Figure 3. The probe sensitivity may be selected by
turning the adjustment knob to the desired resistance threshold. This sets the level at which the
PumpSaver

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determines whether liquid is present at the probes. If the resistance of the probe drops
below the threshold, then liquid is detected. If the resistance of the probe rises above the threshold,
then liquid is not detected.

These devices may also be used in a single-probe application (with a tank or probe common).

CONNECTIONS for PC-XXX-LLC-CZ Products

1. The PC-XXX-LLC-CZ requires an 8-pin socket, part number OT08-PC (sold separately).

2. Mount the PumpSaver
If the location is wet or dusty, it should be mounted in a NEMA 4 or 12 enclosure.

3. For pump motor control, connect the normally open contact, socket terminal 3, and
common, socket terminal 1, in series with the motor’s magnetic contactor coil (M) as shown
in Figure 2.

4. Connect the power supply L1 to socket terminal 2 and power supply L2 to socket terminal

7.

5. Connect high level probe to socket terminal 6.

6. Connect low level probe to socket terminal 8.

7. If the tank is conductive, connect a probe common wire between the tank and socket
terminal 5. If the tank is not conductive, a wire must be connected between a reference, or
common, probe and socket terminal 5.

8. Plug the PumpSaver

Note: The PC-XXX-LLC-CZ uses a 5vdc pulse to check the resistance of each probe, so the
probes must be isolated from other voltage sources.

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socket in a convenient location in or near the pump control panel.

1

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into the socket.

1

For single probe applications, connect a wire between socket terminals 6 and 5. Connect the single
probe between socket terminals 8 and 5. The single probe must be connected to the low probe and
the high probe input must be connected directly to common.

© 2009 SymCom, Inc. All Rights Reserved 2

Figure 1: Pin-Out Diagram

Figure 2: Typical Pump Control Wiring Diagram

© 2009 SymCom, Inc. All Rights Reserved 3