Repair
Prepare for Se
rvice
• To avoid electric shock, remove power from the
system before servicing.
• All electrical wiring must be done by a qualified
electrician and comply with all local codes and
regulations.
• Do not substitute or modify system components.
•ReadWarnings, page 3 .
NOTICE
To avoid equipment damage, the bearing air must
be on while the turbine is spinning and must not be
turned off until the cup comes to a complete stop.
1. Verify that the cup is not rotating.
2. Close the air shutoff valve on the air controller
air supply line.
3. Unplug the power supply.
Replace the Co
ntrol Module
Follow these instructions to replace the control
module (Refs. 2 and 6). Order Kit 25C423, which
includes the module and the necessary software
token.
1. Follow direc
tions at Prepare for Service, page 24.
2. Label each ca
ble with the number of the
connection
port. Disconnect all cables from both
the base mod
ule (2) and the cube module (6).
3. Remove the m
odule door (5).
4. Loosen the f
asteners (6a) and remove the control
module (6)
.
5. Remove fas
teners (3 and 4), then remove the
base (2).
6. Install th
e new base (2). Tighten fasteners (3
and 4).
7. Install t
he new control module (6). Tighten the
fastener
s (6a).
8. Reinstal
l the module door (5).
9. Refer to
the labels to reconnect each cable. If
you did n
ot use labels, remove the wire duct
cover. R
efer to the schematic and the following
table fo
r connection information.
10. Load the
correct software onto the control
module
, using the token.
NOTICE
The mo
dule will not work if the software is not
insta
lled. See directions in the System Logic
Contr
oller manual (3A3955) for loading the
softw
are.
2
4
3A3954B
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