ConMed ExcaliburPLUS PC - Page 57

m
Close the top cover, tip the unit backwards and
remove the two mounting screws and flat washers
nearest the front of the unit. The transformer
will rest against the Rear Panel. Return the unit
to its normal operating position and place it on a
workbench with the rear panel projecting past the
edge only far enough to gain access to the two
rear transformer mounting screws.
After all four mounting screws and flat washers
have been removed, carefully lift A9T1 out of the
unit, rotating it forward to prevent damage to the
A4 PWB or nearby harnesses and components.
Avoid disturbing the routing of harnesses.
Before installing A9T1, remove any debris which
may have accumulated under the transformer and
inspect the vibration isolation grommets for dam-
age and proper insertion in the Base Assembly.
Torn or missing grommets should be replaced
before installation of A9TI.
If the replacement transformer leads have not
been trimmed and sleeved, cut and strip each lead
to the same length as on the transformer which
was removed. DO NOT tin the stripped ends.
Sleeving from the old transformer may be reused
if not damaged. Cable ties on the secondary leads
are most easily installed after the transformer is
mounted and reconnected.
Installation of A9T1 and A6CI is in the reverse
order of removal.
NOTE: The transformer mounting screws should
be tightened only one-half turn beyond the point
where the grommet is in contact with both the
flat washer and mounting foot.
Place the green-yellow frame bonding wire on the
grounding stud along with all of the other
grounding lugs originally there. Tighten the nut
securely.
Reconnect the primary and secondary leads to
A6TB1 and 2, ensuring that each is securely con-
nected to the proper terminal with no stray
strands.
On 50-60 Hz units only, reconnect A4P1 and
A4J1 and reconnect the OVP leads in their origi-
nal order to A6BR1, A6BR2 and A6W1, the
male nesting lug should be oriented toward the
insulated rectifier mounting nut to prevent acci-
dental short circuits to the grounded metal rectifi-
er case.
Install A6C1, ensuring that it is the proper value
for the mains frequency marked on A9T1. Slide
the capacitor down until its bottom just touches
the top of the bent edge on the Base Assembly,
then tighten the strap mounting nut.
Insert red leads A9T1-5 and -6 through separate
holes in the boot, then reconnect the slip-ons to
separate terminals on A6C1. This capacitor is not
polarized, so the leads may be connected in either
order.
Install cable ties on the secondary leads, if neces
sary. Carefully dress all transformer leads so that
they are clear of sharp edges and completely
below the top edge of the Rear Panel. Restore
the original routing of any other harnesses which
may have been moved.
Test the installation by performing the
Preliminary Tests in Section 2.3, Chassis Leakage
tests in Section 4.5.6, and Output Power tests in
Section 4.5.3.
4.3 CLEANIN
The interior of the unit may be vacuumed or
blown out as required. The exterior of the unit
may be cleaned by wiping it with a cloth that has
been dampened (not dripping) with a mild deter-
gent such as Windex® or Formula 409®
Windex® is a registered trademark of the
Drackett Products Company. Formula 409® is a
registered trademark of the Clorox Company.