F3DnService Manual Parts Replacement / Section 2.17
For Technical Support, Call 800-537-2653. Copyright
2006 Franke, Inc. All rights reserved.
2.17 24-Volt Power Supply Replacement
[Part No. 3156 (Siemens)]
1)
Roll the unit out to allow access to rear service panel.
2)
Disconnect power at outlet. [Pull plug.]
3)
Remove screw that secures back service access panel.
4)
Locate the two DIN rail mounted 24-volt power supplies,
one for each dispense Lane. [Left power supply serves
the left Lane, etc.]
5)
Use a 1/8” [3 mm] flat blade screwdriver to disconnect
the white and black [120-volt] wires or brown and blue
[230-volt]] wires that come into the power supply from
the top.
6)
Disconnect the 24-volt braided lead at the Main Control
Board. [See Photo 2] Using the small screwdriver,
disconnect the red and black leads from 24-volt power
supply.
7)
Using a ¼” [6-7 mm] flat blade screwdriver, depress or
lever downward the plastic release tab, which is located
below and in the center of the power supply case. This
will release power supply from the bottom of DIN rail and
allow you to remove the power supply. [See Photo 3]
8)
Take new 24-volt power supply [P/N: 3156] and position
rear slot over upper edge of DIN rail and snap it down
and into place. Make sure it is firmly seated.
9)
Reconnect red and black leads on braided harness to
the new power supply. Red = positive, Black = negative.
10) Plug 24-volt braided lead back into the Main Control
Board. [See Photo 2.]
11) Reconnect wires: [120-volt = black and white] or [240-
volt = brown and blue] to the top of the transformer.
[Black or Brown wire = L, White or Blue wire = N]
12) Plug in unit power cord to power supply.
Test
the new 24-volt Power Supply by:
13) Switch ON Main Power Switch at the front control panel.
14) A small green LED will light on the power supply,
indicating it is functioning properly. [You will also hear
the compressor come on to begin freezer compartment
chilling.]
15) Close rear service access panel and return F3Dn
Dispenser to normal operating location.
[Photo 1]
Two 24-volt Power Supplies are
DIN rail mounted. Note separate
routing of line voltage and 24-
volt wiring.
[Photo 2]
Disconnect 24-volt power lead at
Main Control Board.
[Photo 3
]
Using a flat blade screwdriver,
depress the tab below the power
supply bottom case, to release it
from the DIN mounting rail.
Rev. 2 10/06
Ø
