9
Instruction Book
IB182923EN September 2018 www.eaton.com
AMH-4.76-VR
+
VR-Series
+
Replacement Circuit Breaker
3.3 STORAGE
If the circuit breaker is to be placed in storage, maximum protection
can be obtained by keeping it in the original shipping crate. Before
placing it in storage, checks should be made to make sure that the
breaker is free from shipping damage and is in satisfactory operating
condition.
The breaker is shipped with its contacts open and closing springs
discharged. The indicators on the front panel should confirm this.
Insert the maintenance tool in the manual charge socket opening
(Figure 3.3, 3.5, & 3.7). Charge the closing springs by pumping the
handle up and down about 36 times until a crisp metallic “click”
is heard. This indicates that the closing springs are charged and is
shown by the closing spring “charged” (yellow) indicator. Remove
the maintenance tool. Push the “manual close” button. The breaker
will close as shown by the breaker contacts “closed” (red) indicator.
Push the “manual trip” button. The breaker will trip as shown by the
breaker contacts “open” (green) indicator. After completing this initial
check, leave the closing springs “discharged” and breaker contacts
“open”.
Outdoor storage is NOT recommended. If unavoidable, the outdoor
location must be well drained and a temporary shelter from sun,
rain, snow, corrosive fumes, dust, dirt, falling objects, excessive
moisture, etc. must be provided. Containers should be arranged
to permit free circulation of air on all sides and temporary heaters
should be used to minimize condensation. Moisture can cause
rusting of metal parts and deterioration of high voltage insulation.
A heat level of approximately 400 watts for each 100 cubic feet
of volume is recommended with the heaters distributed uniformly
throughout the structure near the floor.
Indoor storage should be in a building with sufficient heat and
circulation to prevent condensation. If the building is not heated, the
same general rule for heat as for outdoor storage should be applied.
3.4 AMH-4.76-VR+ APPROXIMATE WEIGHTS
Refer to Table 3.
Tablt 3. Maximum Wtight by Typt
Type
Amperes
LBs
AMH-4.76-VR+ 250/41
1200
700
2000
760
