MAINTENANCE
1.
Frequent inspection should be made.
A schedule for
maintenance checks should be determined by the environment
and frequency of use. It is recommended that it should be at
least once a year.
2. Perform visual, electrical, and mechanical checks on all
components on a regular basis.
• Visually check for undue heating evidenced by discoloration of
wires or other components, damaged or worn parts, or leakage
evidenced by water or corrosion in the interior.
• Electrically check to make sure that all connections are clean
and tight.
• Mechanically check that all parts are properly assembled, and
operating mechanisms move freely.
• When checking torque on main lugs, it may be necessary to
move the insulating barrier to get access to the screws on the
main lugs.
3. A desiccant packet has been included in this enclosure at the
factory. The purpose of the desiccant is to absorb and remove
water on contact or from the atmosphere, and protect the
enclosed equipment from damage. The desiccant packet will
expand 3 to 4 times its original size. Desiccant should be
checked and replaced at regular equipment service intervals or
every 3 to 6 months. Remove the desiccant packets from their
packaging and install in each enclosure.
This desiccant is non-toxic, emits no fumes, and generates no heat
during use. No gloves, masks or special clothing are required to
handle this packet.
4. Make sure all cover bolts are fully retracted into cover
before closing cover on body. Align main circuit breaker
operator with toggle position of the main circuit breaker. Close
cover and start cover bolt threads by hand. Torque all cover bolts
securely to 25-30 ft. lbs.
Replacement parts are available through your Crouse-Hinds
distributor. Replace circuit breakers only with Cutler-Hammer
breakers as follows:
CIRCUIT BREAKER
240/120 - 120/208 VAC
Max. Amps
Breaker Type
Back Feed Main
100
BAB
Branch
35
GFI or EPD
30
QBHGF/QBHGFEP
5. We recommend an Electrical Preventive Maintenance program
as described in the National Fire Protection Association Bulletin
NFPA No. 70B.
ADDING OR REMOVING BREAKERS
Breaker actuator kits are used to change the configuration of an
existing panel board. LP-K1 provides breaker operators for single
pole breakers and LP-K3 provides breaker operators for all GFI/EPD
breakers and 2 & 3 pole breakers, while LP-K2 provides operator
plugs. Changing present breaker pole combinations is solved by
choosing the appropriate kit.
Before adding or removing any breakers, see “OPENING COVER”
section. If adding breakers, determine the quantity, trip rating and
number of poles for each. Add or remove circuit breakers as
necessary.
For Group B applications, use only Cutler-Hammer QBHW series for
conventional breakers. GFI/EPD breakers are described in
“GROUND FAULT CIRCUIT BREAKER TESTING PROCEDURE”.
When adding a GFI/EPD breaker, remove appropriate plug (catalog
number LP-K5) on cover for push-to-test function. Note that this
entry is staggered by one position from the breaker operator handle.
Install plunger (LP-K4) to activate the push-to-test button on the
GFI/EPD breaker. Wire per Figure 2. Also, see note in “GROUND
FAULT CIRCUIT BREAKER TESTING PROCEDURE”.
Terminate any necessary additional wires to the newly added circuit
breakers by making sure that they are long enough to make the
required connections. Make connections per Figure 2 of either
single or three phase circuits, spare wires are provided.
Four spare wires are included for replacement wires. These wires
could be used for 50 Amp branch circuits by doubling the wires in
parallel.
Test wiring for correctness with continuity checks for unwanted
grounds with an insulation resistance tester.
With breakers installed in new panel board configuration, determine
the location and orientation of breaker operators to be added and
circuit positions to be plugged.
To install necessary breaker operators or plugs to the cover of the
breaker housing, see “
ADDING BREAKER OPERATORS
” or
“
ADDING PLUGS
.” Close cover per instructions in “
ADDING PLUG
”
section.
IF 1433 • 04/03
Copyright © 2003, Cooper Industries, Inc.
Page 5
CAUTION
Clean both ground joint surfaces of body and cover before
closing.Dirt or foreign material must not accumulate on flat ground
joint surfaces. Surfaces must seat fully against each other to
provide a proper explosionproof seal.
CONNECTOR WIRE TORQUE
LOCATION
WIRE
TORQUE
SIZE
(lb. in.)
TERMINAL STRIP
22-8 AWG
8
10-1/0 AWG
25
18-10 AWG
35
GROUND-NEUTRAL
8 AWG
40
STRIPS
6-4 AWG
45
2-1/0 AWG
50
NEUTRAL LUG
6 AWG - 250 MCM
200
ENCLOSURE
14-2/0 AWG
120
GROUND LUGS
MAIN TERMINAL
8 AWG - 500 MCM
375
BLOCK
MAIN AND BRANCH
AS MARKED
AS MARKED
CIRCUIT BREAKERS
ON DEVICE
ON DEVICE
BUS BAR CONNECTOR TORQUE
BOLT SIZE
TORQUE (lb. in.)
#10
30
1/4
65
5/16
130
WARNING
To avoid electrical shock, fire and or explosion, always disconnect
primary power source before opening enclosure for inspection or
service.
