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SECTION 2 TESTING & SERVICE
2 --- 1
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 f or Yearly Inspection
Hazardous voltage capable of causing shock,
burns, or death is used in this switch.
Deenergize both Normal – Emergency power
sources bef ore performing inspections!
S Clean the ATS enclosure.
Brush and vacuum away any excessive dust
accumulation. Remove any moisture with a clean
cloth.
S Check 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.
S Maintain 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).
S Check all cable connections & retighten them.
REPLACEMENT PARTS
Replacement parts are available in kit form. When
ordering parts provide the Serial No., Bill of Mate rial
No. (BOM), a nd 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).
DISCONNECTING T HE CONTROLLER
The harness disconnect plugs are furnished f or 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 plac e standby eng ine starting contr ol in the
off position. S econd, then open the emergency
source circuit breaker. Third, open the normal
source circuit breaker.
b. If the transfer switch is i n the Emergency
position, first open the normal source circuit
breaker. Second, place the engine starting
control i n the test or run position. Third, open
the emergency source circuit breaker.
2. Separate the two q uick 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,
firstbesurethatboth
normal and emergency
source circui t breakers are open. Second, be
sure that the standby engine starting control is
still in the off position.
b. If the transfer switc h 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.
Caref ully 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:
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 t he standby engine
starting control in the automatic position.
b. If the transfer switch is i n the Emergency
position, first close t he emergency source circuit
breaker. Second close the normal source circuit
breaker.