Product Manual

Operation
10 Homelink Upgradeable Manual Transfer Switch Owner’s Manual
Return to Utility Source Side
1. Manually actuate switch by moving manual operat-
ing handle DOWN.
2. Remove manual operating handle from movable
contact carrier arm. Return handle to storage
bracket.
Voltage Checks
NOTE: Use the Digital Multimeter (DMM) LowZ low input
impedance setting to collect accurate voltage
measurements. LowZ eliminates the possibility of
inaccurate ghost voltage readings, also known as
phantom voltage or stray voltage readings. Refer to the
DMM manufacturer’s literature for additional information.
Utility Voltage Checks
1. Turn on UTILITY power supply to the transfer
switch using breaker in main distribution panel.
2. With an accurate AC voltmeter, check for correct
voltage.
3. Measure across MTS terminal lugs N1 and N2
(approximately 240 VAC).
4. Measure across MTS terminal lugs N1 to N3 and
N2 to N3 (approximately 120 VAC).
5. Verify UTILITY supply voltage is correct and
compatible with the transfer switch ratings.
Generator Voltage Checks
1. Connect generator to the transfer switch.
2. Start generator.
3. With an accurate AC voltmeter and frequency
meter, check no-load, voltage and frequency.
Measure across ATS terminal lugs E1 to E2; E1 to
E3 and E2 to E3.
4. When certain that generator supply voltage is
correct and compatible with the transfer switch
ratings, turn OFF generator supply to transfer
switch.
5. Set generator main circuit breaker (CB1) to OFF or
OPEN.
6. Shut down the generator.
NOTE: Do NOT proceed until generator AC output
voltage and frequency are correct and within stated
limits.
Generator Tests Under Load
1. If so equipped, set generator main circuit breaker
to OFF or OPEN.
2. Turn OFF or OPEN all load circuits.
3. Set utility service disconnect circuit breaker to OFF
or OPEN.
4. Manually actuate transfer switch main contacts to
Standby position. See Manual Operation.
5. Start generator. When engine starts, allow it to run
for a few minutes to stabilize engine speed.
6. Generator now powers all LOAD circuits. Check
generator operation under load as follows:
a.Turn on electrical loads to full rated wattage/
amperage capacity of the generator. DO NOT
OVERLOAD.
b.With maximum rated load applied, check voltage
and frequency across transfer switch terminals
E1 and E2. Voltage should be greater than 230
VAC (240 VAC system). Frequency should be
greater than 58 Hz.
c.Allow generator to run under rated load for at
least 30 minutes. With unit running, listen for
unusual noises, vibration, overheating, etc., that
might indicate a problem.
7. When generator tests under load are complete,
turn OFF all load circuits.
8. Let generator run at no-load for several minutes.
Then, shut down the generator.
9. Manually move main switch contacts back to
UTILITY.
10. Place manual handle in its storage bracket.
Frequency 58–63 Hz
Terminals E1 to E2 240–246 VAC
Terminals E1 to E3 120–123 VAC
Terminals E2 to E3 120–123 VAC
(000123)
DANGER
Electrocution. Turn utility supply OFF before
working on utility connections of the transfer
switch. Failure to do so will result in death or
serious injury.
(000129)
DANGER
Electrocution. High voltage is present at
transfer switch and terminals. Contact with live
terminals will result in death or serious injury.