Circuit Board Replacement, Solenoid Replacement

Instruction Manual

IM-106-340AC-1, Rev. 1.0 April 2005

SPS 4001B

CIRCUIT BOARD REPLACEMENT

Perform the following procedure to replace circuit board (5, Figure 4-1).

Disconnect and lock out power before working on any electrical components.

SOLENOID REPLACEMENT

1.Remove the SPS 4001B chassis from the enclosure according to the instructions in "Remove/Install Chassis".

2.Refer to Figure 4-2.Disconnect wiring from the circuit board.

3.Disconnect the solenoid and pressure switch connectors.

4.Refer to Figure 4-1.Remove circuit board (5) from chassis (24).

5.Connect mating wires to solenoid (14 or 15) and pressure switch (16). Lo Gas solenoid connects to J6, Hi Gas solenoid to J5, and pressure switch to J3.

6.Install the replacement circuit board (5) on chassis (24).

7.Reinstall field wiring to circuit board.

8.Install the SPS 4001B chassis in the enclosure according to the instructions in "Remove/Install Chassis".

Use this procedure to replace the calibration gas 1 (Hi Gas) solenoid (14, Figure 4-1)or calibration gas 2 (Low Gas) solenoid (15).

Disconnect and lock out power before working on any electrical components.

1.Remove the SPS 4001B chassis from the enclosure according to the instructions in "Remove/Install Chassis".

2.Unplug solenoid (14 or 15) lead wire.

3.Remove the top nut of solenoid (14 or 15) securing the coil assembly and washer to the base. Remove the coil assembly, including the leads, and washer. Use a 13/16 in. wrench to loosen and remove the solenoid base.

When installing a solenoid, do not overtighten. Damage to the solenoid may occur.

4.Install the new solenoid base. Be careful not to overtighten. Install the new washer and coil assembly and secure with the top nut.

5.Connect the solenoid lead wire to solenoid (14 or 15).

6.Install the SPS 4001B chassis in the enclosure according to the instructions in "Remove/Install Chassis".

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