Norcold N500 - Power Cord and Terminal Block; AC Power Cord Connections; N500 Terminal Block; AC;DC Converter Power Source

DRAFT
NOT FOR PUBLIC RELEASE
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www.norcold.com/cda N500/N510 ModelsRefrigerator Service Manual
AC Power Cord
N500 AC Power Cord
N500 models are supplied ac power through the ac
power cord, which connects to the terminal block (see
Figure 28). The cord's grounding prong on the ac outlet
connector must be left intact and never be modified or
cut. The cord's ground wire (green wire) must always be
fastened to the refrigerator cabinet metal plate.
N510 AC Power Cord
N510 models are supplied ac power through the ac
power cord. See Figure 29. Do not modify or cut the
cord's grounding prong. Always make sure that ground
wire (green wire) is tightly fastened to the refrigerator
cabinet metal plate. The rounded side of the ac cord's
power board connection must be connected to the
power board with the rounded side facing left.
N500 Terminal Block
The terminal block is located on the back of the
refrigerator in the lower left corner. See Figure 30. The
terminal block receives ac power from the RV’s ac
outlet and dc power from the RV’s dc power supply and
distributes the power to the refrigerator’s electrical
components.
AC/DC Converter as Power Source -
N510 Only
The power board must be supplied 12 Vdc only from the
filtered output (battery side) of a converter.
Unfiltered voltage (commonly referred to as ac ripple)
output of ac/dc converters can cause the electronic
controls to set false fault codes. It can also turn off the
refrigerator or prevent the refrigerator from turning off.
Figure 29. N510 ac power cord
Figure 28. N500 ac power cord
Figure 30. Terminal block and connections
123
4
5
678
Terminal
block
DC power
supply
(from RV)
Smooth
ac power
supply
AC heater
lead to ac
heater
DC heater
leads
(3-ways only)
AC heater
lead to inline
fuse and
selector switch
Ribbed
ac power
supply
Smooth: Line (hot) lead ( to terminal block terminal 2)
Ribbed: Neutral lead (to terminal block terminal 1)
Green: Ground to metal plate
Wire leads identification
Smooth: Line (hot) lead (to power board connector)
Ribbed: Neutral lead (to power board connector)
Green: Ground to metal plate
Wire leads identification
Do not use a 12 volt converter to supply power to an
N500.3 or N510.3 model refrigerator. A 12 volt converter
cannot supply enough power to operate the dc heater.
NOTE