Emerson 7000 manual Testing & Service, Transfer Test, Preventive Maintenance, Replacement Parts

SECTION 2 TESTING & SERVICE

TRANSFER TEST

Operate the 7000 Series ATS at least once a month by following the five–step Electrical Operation Transfer Test procedure on page 1–4.

PREVENTIVE MAINTENANCE

Reasonable care in preventive maintenance will insure high reliability and long life for the 7000 Series ATS. An annual preventive maintenance program is recom- mended.

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

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!

SClean the ATS enclosure.

Brush and vacuum away any excessive dust accumulation. Remove any moisture with a clean cloth.

SCheck the transfer switch contacts.

Remove the transfer switch barriers and check con- tact condition. Replace the contacts if they become pitted or worn excessively. Reinstall the barriers carefully.

SMaintain transfer switch lubrication.

The transfer switch has been properly lubricated, and under normal operating conditions no further lubricating is required. Renew factory lubrication if the switch is subjected to severe dust or abnormal operating conditions. Relubricate the operator if TS coil is replaced. Order lubrication 625550–001(Castrol EndurexR 4000 lubricant).

SCheck all cable connections & retighten them.

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

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

1.Observe the position of the transfer switch.

a.If the transfer switch is in the Normal position, first place standby engine starting control in the off position. Second, then open the emergency source circuit breaker. Third, open the normal source circuit breaker.

b.If the transfer switch is in the Emergency position, first open the normal source circuit breaker. Second, place the engine starting control in the test or run position. Third, open the emergency source circuit breaker.

2.Separate the two quick disconnect plugs by squeez- ing the latches. Do not pull on the harness wires.

Reconnecting the Plugs

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

1.Observe the position of the transfer switch.

a.If the transfer switch is in the Normal position, first be sure that both normal and emergency source circuit breakers are open. Second, be sure that the standby engine starting control is still in the off position.

b.If the transfer switch is in the Emergency posi- tion, first be sure that both normal and emer- gency source circuit breakers are open.

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

3.Restore the two sources in sequence as follows:

REPLACEMENT PARTS

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

2---1

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

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