REMOVE/INSTALL Chassis, Removal, Installation

Instruction Manual

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

SPS 4001B

1.	Screw	8.	Screw	15.	Low Cal. Gas Solenoid	22.	Reference Air Pressure
2.	Fuse	9.	Adapter Fitting	16.	Pressure Switch		Regulator
3.	Nylon Washer	10.	Impolene Tubing	17.	Manifold Gasket	23.	Elbow Adapter
4.	Standoff	11.	Tubing	18.	Screw	24.	Chassis
5.	Circuit Board	12.	Straight Fitting	19.	Elbow Fitting	25.	Reference Air Flow Meter
6.	Hex Nut	13.	Manifold	20.	Grommet	26.	Cal. Gas Flow Meter
7.	External Lock Washer	14.	High Cal. Gas Solenoid	21.	Teflon Tubing	27.	Ground Wire

REMOVE/INSTALL CHASSIS

Perform the following procedures to remove the SPS 4001B chassis from the enclosure for service, and to reinstall the chassis after the service tasks are completed.

Removal

1.Loosen the SPS 4001B cover screws and open the cover.

2.Shut off the calibration gas and reference air to the SPS 4001B. Disconnect all pneumatic lines at the SPS 4001B manifold.

3.Refer to Figure 2-2.Disconnect all wires from the chassis terminals and remove the power cable ground lead from the ground lug.

4.Refer to Figure 4-1.Remove two screws (18) that secure chassis (24) to manifold (13).

5.Loosen captive screw (1) that secures chassis (24) to enclosure.

6.Place one hand on the front of chassis (24) and tip the enclosure up-side-down. Remove chassis from enclosure and place chassis and enclosure on work surface.

Installation

1.Push up on the base of the fitting installed at the bottom of reference air pressure regulator (22, Figure 4-1). Pull teflon tubing (21) from the fitting.

2.Stand chassis (24) and enclosure upright and carefully place the chassis in the enclosure.

3.Tighten captive screw (1).

4.Install and tighten two screws (18) to secure the base of the chassis.

5.Insert teflon tubing (21) through grommet (20) in bottom of enclosure. Seat the tubing in mating adapter fitting at the bottom of reference air pressure regulator (22).

6.Refer to Figure 4-2.Connect all signal and power wiring to the chassis terminals and connect the power cable ground lead to the ground lug.

7.Connect all pneumatic lines at the SPS 4001B manifold. Turn on the calibration gas and reference air supplies to the SPS 4001B.

8.Close the enclosure cover and secure the cover screws.

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