Emerson 381333230 manual Section Testing & Service, Preventive Maintenance, Replacement Parts

SECTION 3

TESTING & SERVICE

PREVENTIVE MAINTENANCE

Reasonable care in preventive maintenance will insure high reliability and long life for the switch. An annual preventive maintenance program is recommended.

ASCO Services, Inc. (ASI) is ASCO Power Technologies’s national service organization. ASI can be contacted at 1-800-800-2726 for information on preventive maintenance agreements. In Canada call 1–888–234–ASCO (2726).

TESTING

Operate the switch at least once a month by following this four-step Electrical Operation Test.

REPLACEMENT PARTS

Replacement parts are available in kit form. When or- dering parts provide the Serial No., Bill of Material No. (BOM), and Catalog No. from the transfer switch name- plate. Contact your local ASCO Power Technologies sales office or ASI. In the United States call 1–800–800–ASCO (2726), or in Canada call 1–888–234–ASCO (2726).

DISCONNECTING THE CONTROLLER

The harness disconnect plugs are furnished for repair purposes only and should not have to be unplugged. If the controller must be isolated, follow these steps:

Disconnecting the Plugs

Transfer Switch Test

A. Turn the door-mounted Transfer Control switch clockwise to Transfer to Emergency.

B.The transfer switch will operate to the Emergency position. The Load Connected To Emergency light should come on and the Load Connected to Normal light should go off.

C.Turn the door-mounted Transfer Control switch counterclockwise to Transfer to Normal.

D.The transfer switch will operate to the Normal posi- tion. The Load Connected to Normal light should come on and the Load Connected to Emergency light should go off.

Checklist for Yearly Inspection

Hazardous voltage capable of causing shock,

burns, or death is used in this switch.

Deenergize both Normal & Emergency power

sources before performing inspections!

❐Clean the switch enclosure. Brush and vacuum away any excessive dust accumulation. Remove any mois- ture with a clean cloth.

❐Check the Switch Contacts. Remove transfer switch barriers and check the condition of the contacts. Re- place contacts when pitted or worn excessively. Re- install barriers carefully.

❐Maintain transfer switch lubrication. If switch is subjected to severe dust or abnormal operating con- ditions, renew factory lubrication on all movements and linkages. Relubricate solenoid operator if TS coil is replaced. Don’t use oil; order lubrication 625550–001 (Castrol EndurexR 4000 lubricant).

❐Check all cable connections and retighten them.

3---1

Do not unplug the controller until step 1a. or 1b. below is completed.

1.Observe the position of the transfer switch.

a.If the transfer switch is in the Normal position, place standby engine starting control in the off position. Then open the emergency source circuit breaker.

b.If the transfer switch is in the Emergency position, open the normal source circuit breaker. Place the engine starting control in the test or run position.

2.Separate the quick disconnect plugs by squeezing the latches. Do not pull on the harness wires.

Reconnecting the Plugs

Do not reconnect controller until steps 1 and 2 below are completed.

1.Observe the position of the transfer switch.

a.If the transfer switch is in the Normal position, be sure that the standby engine starting control is still in the off position. The emergency source cir- cuit breaker still should be open.

b.If transfer switch is in the Emergency position, nor- mal source circuit breaker still should be open.

2.The harness plugs and sockets are keyed. Carefully align the plugs with the sockets and press straight in until both latches click.

3.Restore the opposite source as follows:

a.If the transfer switch is in the Normal position, place the standby engine starting control in the automatic position. Then close the emergency source circuit breaker.

b.If the transfer switch is in the Emergency position, close the normal source circuit breaker.