Specifications

I.B. ATS-I005
Page 32
Effective 6/00
Step 11: If a problem persists, contact Cutler-Hammer.
6.4.4 TRANSFER SWITCH WILL NOT
AUTOMATICALLY RECHARGE SWITCHES
Step 1: Measure the voltage between terminals A6
and A2 on the switching device that does not
automatically recharge. Is the voltage mea-
sured 120 Vac (+/- 10 volts)? Record the
reading.
If YES: Refer to the SPB maintenance manu-
al and check the electrical operator
inside the switching device.
If NO: Verify the wiring to A6 and A2.
Step 2: If a problem persists, contact Cutler-Hammer.
6.5 REPLACEMENT
Follow these procedural steps to replace the IQ
Transfer.
Step 1: Turn off control power at the main disconnect
or isolation switch of the control power sup-
ply. If the switch is not located in view from
the IQ Transfer, lock it out to guard against
other personnel accidentally turning it on.
Step 2: Verify that all “foreign” power sources wired to
the IQ Transfer are de-energized. These may
also be present on some of the terminal
blocks.
Step 3: Before disconnecting any wires from the unit,
make sure they are individually identified to
assure that reconnection can be correctly per-
formed. Make a sketch to help with the task of
terminal and wire identification.
Step 4: Remove all wires and disconnect plug-type
connectors.
SUPPORT THE IQ TRANSFER FROM THE FRONT
SIDE WHEN THE SCREWS ARE LOOSENED OR
REMOVED IN STEP 5. WITHOUT SUCH SUPPORT,
THE UNIT COULD FALL OR THE PANEL COULD BE
DAMAGED.
Step 5: Remove the 6 mounting screws holding the
unit against the door or panel. These are
!
CAUTION
If NO: Proceed to Step 6.
Step 5: Is a test (Manual or Exercise) being run?
If YES: STOP! The transfer switch should
not transfer to EMERGENCY. The
NORMAL source is preferred.
If NO: Proceed to Step 6.
Step 6: Measure the voltage on transformer E1
between terminals X1 and X2. Is the voltage
measured 120 Vac (+/- 10 volts)? Record the
reading.
If YES: Proceed to Step 7.
If NO: Check ET1.
Step 7: Is the EMERGENCY switching device
charged?
If YES: Proceed to Step 8.
If NO: Go through paragraph 6.3.4 first
before continuing.
Step 8: Is the NORMAL switching device OPEN?
If YES: Proceed to Step 10.
If NO: Proceed to Step 9.
Step 9: Measure the voltage between terminals A9
and A8 on the NORMAL switching device
(shunt trip). Is the voltage measured 120 Vac
(+/- 10 volts)? Record the reading.
If YES: Refer to the SPB maintenance manu-
al and check the shunt trip
NORMAL switch.
If NO: Check the wiring to A9 and A8.
Step 10: Measure the voltage between terminals A1
and A2 on the EMERGENCY switching
device (spring release coil). Is the voltage
measured 120 Vac (+/- 10 volts)? Record the
reading.
If YES: Refer to the SPB maintenance manu-
al and check the spring release coil
EMERGENCY switching device.
If NO: Check the wiring to A1 and A2.