FlexTrol
™
Class E2 Medium Voltage Controllers with
Eaton Contactor
Powered by Safety
®
36
01.4IB.46300
Operation
Ch 5 Operation
a. g
eneral
A test power interlock circuit enables each
complete unit to be tested without applying
power to the motor. After all control circuit
connections are made, the controller should
be put through its complete operating
sequence in the test position, as a final check.
A wiring diagram, which indicates circuits
and connections, is shipped from the factory
with FlexTrol
™
equipment. All external wiring
from the controller must be connected in
accordance with the wiring diagram.
B. p
reparation
oF
tHe
c
ontroller
For
o
peration
1) Cleaning
Ensure that the FlexTrol equipment is
clean before operation begins. After
the equipment is placed in the required
location and the cables are connected,
carefully clean the compartment and
equipment.
CAUTION
Care should be taken during the cleaning
operation to prevent any dirt from being
blown into the inaccessible space of the
devices.
Before the panel can be operated, even
for a tryout without power, all devices
must be placed in full operating condition.
To protect equipment during shipment,
blocks and ties were applied to parts such
as the armature of many of the relays and
vacuum contactors. Ensure all blocks and
ties are removed to prepare FlexTrol for full
operating condition.
Inspect the compartment and equipment
for loose hardware, wires, and tools that
may have been inadvertently left inside the
compartment during installation.
Clean away dirt and dust, and remove
packing material which interferes with
the operation of the controller’s devices.
For cleaning, use a brush, soft cloth, or a
vacuum cleaner. Do not use compressed
air to clean the equipment. This may
result in loose dirt or grit being blown into
bearings or other critical parts, thus causing
excessive wear. Do not use detergent for
cleaning. Only use denatured alcohol or
isopropyl alcohol to clean the insulation.
See
Ch 6 Maintenance, B. Preventative
for complete
cleaning information.
!
CAUTION
When cleaning bus bar insulation, only
denatured alcohol or isopropyl alcohol
should be used to remove foreign material
from the insulation surface. Failure to do
so may damage the dielectric and/or the
mechanical properties of the insulation.
2) Lubricating
The seating surfaces of laminated AC
contactors, relay magnets, and the end of
shafts may be coated with a heavy–grease
rust preventative. Before operating the
vacuum contactors, the rust preventative
should be wiped off and the magnet
seating surfaces should be coated with a
thin film of light machine oil.
