Section BXM‐10N‐HE3‐20A
030‐101741 Rev. B
R
18
1311IARB
9.
Dismount fan(s).
Remove/lift off the old fan(s).
10.
Store screws.
Re‐install the screws into their mounting holes.
11.
Return fans.
Return the fan(s) to Westell for repair or re
placement (see Paragraph 7.2).
12.
Install replacement fan(s).
Mount the replacement fan(s)
back on the mounting bracket on the inside of the door by
removing the stored screws, aligning the holes in the
mounting bracket, fans, and fan guards, and re‐inserting
the screws in the aligned hole sets. Verify the fan cable
wires are/will not be pinched and face toward the inside of
the cabinet. Verify the fans are oriented and mounted such
that the air flow direction will be into the cabinet. Re‐route
the fan wires toward the controller card, noting and using
the cable routing from Step 7 above. Route, manage and
secure the wires (and any slack) so they are neat and will
not be pinched.
13.
Connect fan wires to “FAN B” Euro‐connector.
Remove
the FAN B connector from the controller card. Twist and
join together the stripped ends of the same‐colored wires
from each fan (i.e., twist a red wire end from one internal
fan with a red wire end from the second internal fan), to
make a conjoined single wire. Insert this conjoined wire in
to its proper wire port hole in the connector (e.g., insert
the RED wire(s) into the port labeled “RED”) and tighten
the port's set screw to secure the wire. Repeat for the oth
er/black conjoined wire. Read the note below prior to
securing the fan(s) and making wire connections.
‐ FAN WIRING IN EURO‐CONNECTOR NOTE ‐
One Euro‐connector serves two fans: there is one connector for
the two external air fans (connector labeled “FAN A”) and one
connector for the two internal air fans (“FAN B”). Each fan has
a black wire and a red wire. When wiring a new or replacement
fan, the same colored wire from each fan should first be twisted
together as a single wire unit prior to insertion into its proper
termination hole in the connector.
14.
Apply power; re‐install FAN B Euro‐connector and fuse.
Keeping fingers, hair, clothing, wires, tools, etc. away from
the fans, insert the FAN B Euro‐connector and the 5A fuse
back into their proper positions in the controller card.
Verify the connector is
not
upside‐down (i.e., BLK wires
terminating at position labeled BLK [up], RED wires at
position labeled RED [down]).
15.
Verify power is present, and test.
Verify the fans are operational
and working properly. Use the fan test button as needed.
5.4
Replacing the Door Alarm Sensor
Door alarm sensor switch cannot be field repaired. Should a
problem be suspected with the door alarm, remove the entire
door alarm switch assembly and return it to Westell for service,
then replace it. To remove and replace the door alarm switch as
sembly, proceed with the following instructions.
‐ CAUTION ‐
To avoid electrical shock, turn off any DC or AC power feeds
to the controller before beginning this procedure.
‐ WIRE AND BLOCK DISCONNECTION NOTE ‐
The Euro‐connector blocks used for making DC distribution and
alarm wire connections facilitate a simple group disconnection of
all alarm and dc distribution wire connections; there's no need to
unscrew each wire. Simply remove the entire block by pulling the
blocks away from the panel.
1.
Open the cabinet.
Open the cabinet door by loosening the
cup‐washer screws with a 216 tool or can wrench (‐NHE3)
or with the provided pin‐in‐hex wrench (‐NHE3G).
2.
Disconnect door switch power.
Pull out and remove the
“DOOR SWITCH‐2” Euro‐connector at the right side of
the controller card or remove the 5A fuse to disconnect
power at the door switch.
3.
Remove nuts that secure the door switch mounting brack
et.
The door sensor switch is mounted on a bracket located
at the front, right, bottom corner of the cabinet. Remove the
nuts that secure the bracket to the threaded posts in the
lower, right front corner of the open cabinet (
4.
Separate the switch from the bracket and disconnect wires.
Lift the door switch assembly and gently pull the door sen
sor switch away from the mounting bracket (snap it out),
to access the door switch assembly's cable wires. Carefully
pull off or disconnect the red and black female disconnect
wires from their terminals on the switch, one at a time, la
belling each and making a note of which colored wire
connector mated with which switch terminal, for easy re‐
connection to the new, replacement, switch assembly.
5.
Remove the door sensor switch.
Remove (and return to
Westell or discard) the old door sensor switch.
6.
Install the new door sensor switch.
Reverse the steps above
to install the replacement door sensor switch (route the
door switch cable wires through the front cut‐out hole in the
mounting bracket [from the rear to the front], attach the
cable wire ends [disconnect terminals] to their proper ter
minals at the back of the replacement switch [see bullets
below], mount the switch in the bracket by inserting it
rear‐first into and through the bracket's front rectangular
hole cut‐out and snap it into place).
When re‐attaching the door switch cable's two wires to the new
door switch sensor assembly, verify/perform the following:
S
Verify the two wire/connectors are routed so that they
can
easily
reach the back of the door sensor (no tension).
S
Route both wires, from the left to the right, under the
top flange of the door switch mounting bracket, then
allow sufficient slack in the wire that will connect to the
right terminal of the switch such that it can loop past
then back toward the switch so as to properly mate with
the switch terminal angled to the right. Manage and se
cure the cable wire slack per company practice.
S
Verify that the door alarm cable's black wire connects
to the door switch terminal lug labelled “COM,” and
that the cable's red wire connects to the terminal lug la
belled “NC” (or as labeled in Step 4 above).
7.
Secure door switch mounting bracket to the cabinet floor.
Attach the door switch mounting bracket back onto the cab
inet by aligning the bracket's mounting holes with the
