Cooper Power Systems mcGraw Edison 9000 Guide

INTRODUCTION
These installation, maintenance
and parts replacement instructions
apply to part number 9000 McGraw-
Edison control heater accessory (Fig.
1) used with a McGraw Edison
®
CL-2A, CL-4C or CL-5A voltage
regulator control.
The heater can be manually turned
ON or OFF by means of the toggle
switch located on the heater
assembly. In the ON position, the
thermostat located in the heater
assembly will energize the heater
when the temperature falls below
85°F. The thermostat turns the heater
off when the temperature exceeds
100°F. Figure 2 is the schematic
diagram of the heater and its
connection to the regulator control.
Only trained and experienced
personnel should install or operate
this equipment.
These instructions are written to
assist such personnel, and are not
intended to replace proper training
and experience. If additional informa-
tion is required, please contact your
Cooper Power Systems repre-
sentative.
WARNING/DANGER ALERTS
Warning/Danger alerts in this manual
describe hazardous situations that
may cause death and/or personal
injury if the instructions in the
Warning/Danger alerts are not
followed. Warning/Danger alerts are
highlighted as follows:
CAUTION ALERTS
Caution alerts in this manual describe
hazardous situations that may cause
personal injury and/or property
damage if the instructions in the
Caution alerts are not followed.
Caution alerts are highlighted as
follows:
INITIAL INSPECTION
Each field installed McGraw-Edison
®
No. 9000 heater is shipped in a
carton designed to protect the unit
from in-transit damage. Immediately
upon receipt of a heater:
•Thoroughtly inspect the housing
and the wiring to make sure the
heater is in good condition.
If initial inspection reveals damage
or evidence of rough handling in
transit, immediately file a claim with
the carrier and notify your Cooper
representative.
Voltage Regulators
Service Information
S225-10-12
McGraw-Edison
®
VR-32 Regulator Control Heater
Part No. 9000: Installation and Parts
Replacement Instructions
WARNING/DANGERA Warn-
ing/Danger alert describes a
hazardous situation that may cause
death and/or personal injury and
gives instructions on how to avoid
death and/or personal injury.
CAUTIONA Caution alert
describes a hazardous sit-
uation that may cause personal
injury and/or property damage and
gives instructions on how to avoid
personal injury and/or property
damage.
CAUTIONDo not install a
damaged heater. A damaged
heater can cause fuse blowing.
Figure 1.
Thermostatically controlled heater
assembly.
To TB2-G
To TB2-VM
Figure 2.
Schematic diagram.
These instructions do not claim to cover all details or variations in the equipment, procedure, or process described, nor to provide directions for
meeting every possible contingency during installation, operation or maintenance. When additional information is desired to satisfy a problem not
covered sufficiently for the user’s purpose, please contact your Cooper Power Systems representative.
August 1993 • Supersedes S225-10-1 Supplement 2 of October 1988 • © 1993 Cooper Industries, Inc.1

INSTALLING HEATER IN A
CL-2A, CL-4C OR CL-5A
CONTROL ENCLOSURE
To install a heater in a control
enclosure:
1.Open the front panel to gain
access to the rear panel by:
A.Loosening the knurled captive
screws on the left of the front
panel.
B.Swing the front panel out.
2.De-energize the control by:
AOpening the V
1disconnect
knife switch.
B.Opening the V
6disconnect
knife switch if present.
C.Closing the C knife switch.
3.Using two-6-32 x
3
/8in. machine
screws, mount the heater to the
tapped holes on the rear panel.
4.Refer to Figure 2 and wire the
heater to Terminal Board TB2 by:
A.Connecting the white lead to
TB2-G.
B.Connecting the black lead to
TB2-VM.
5.Energize the control by:
A.Opening the C knife switch.
B.Closing the V
6disconnect knife
switch if present.
C.Closing the V
1disconnect knife
switch.
6.Activate the heater by placing the
ON/OFF toggle switch on the front
of the heater in the ON position.
NOTE: In the ON position, the
thermostat turns the heater on when
the temperature falls below 85°F and
turns the heater off when the
temperature exceeds 100°F.
7.Close the control front panel by:
A.Swinging the front panel back
into place.
B.Tightening the knurled captive
screws on the left side of the
front panel to hold the panel
securely in place.
The control - with thermostatically
controlled heater - is now in service.
Table 1 and Figure 3 locate and list
replacement parts.
TABLE 1
Heater Assembly (part code 9000)
Parts Description
Item No.DescriptionPart Code No.
1Resistor9001
2Thermostat9002
3Switch9003
Figure 3.
Heater assembly replacement parts
location. For part description and part
number, see Table 1.
CAUTIONOpen the V
1knife
switch and V
6knife switch if
present, and close the C knife
switch to de-energize the control
before installing the heater
accessory.
P. O. Box 1640
Waukesha, WI 53187
McGraw-Edison
®is a registered trademark of Cooper Industries, Inc.http://www.cooperpower.com