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DentalEZ
®
Equipment
PN: 2717-267C
Section III Installation
Finalizing USC Installation
NOTE: The following instructions for fi nalizing Utility
Service Center (USC) connections include optional city
water installation. If installing standard clean water
system only, omit steps 10* through 14*
.
NOTE: Refer to the tubing diagram (PN: 2662-304)
in the literature packet for all connections.
1. Select the following hardware items:
• Six 1/8" Tubing Clamps
• Three 1/4" Tubing Clamps
2. Remove the cable wrap to expose the tubing
connections of the umbilical assembly
NOTE: If the pump cover and the chair’s lower
cantilever cover are not already removed, take
them o ff now.
3. Route the foot control tubing into base of the
chair.
4. Find the foot control leads of the chair’s
umbilical assembly numbered 1 , 2 , 3 and 4
located toward the rear of the chair’s pump
motor assembly.
5. Attach the 1 , 2 , 3 and 4 leads with the
corresponding numbered connectors of the
foot control tubing.
6. In the USC, attach the hard, red air line
to the air valve fi tting using the supplied
compression fi tting (Figure 16, connection A) .
7. Connect the 1/8" red tube from the umbilical
to the poppet valve connection opposite the
existing barb assembled to the 1/4" red tube
(Figure 17, connection C).
8. Connect the 1/8" yellow tube from the
umbilical to the poppet valve connection
opposite the existing barb assembled to the
1/8" yellow tube (Figure 17, connection D) .
9. Connect the 1/4" red tube, numbered 1 , to the
middle barb of the poppet valve in the USC.
Then secure the connection using a 1/4" tubing
clamp. (This is the drive air line for the foot
control) (Figure 17, connection E) .
10. * Attach a 1/4" tubing clamp to the rigid 1/4"
green water line of the water regulator.
11. * Use soap to lubricate the 1/4" barb, then
connect the water line to the water valve
actuator (Figure 16, connection B) .
12. * Connect the 1/4" green tube of the umbilical
to the connector from the 1/4" green tube of
the water regulator (Figure 18, connection F) .
13. * Attach a 1/8" tubing clamp to the 1/8" yellow
air line of the poppet valve.
14. * Use soap to lubricate the barb of the water
valve actuator. Attach the 1/8" yellow line of
the poppet valve to this barb and secure using
a 1/8" tubing clamp (Figure 18, connection G) .
15. If a rear assistant’s arm is installed , slip the
vacuum hose from the chair over the vacuum
elbow in the USC (Figure 18, connection H) .
16. If an optional fi ber optic electrical system
is installed , attach the electrical leads of
the power pack transformer to the adapter
harness. Attach the electrical leads to the
matching connector on the main harness.
17. Route the main harness through the 5' × 1¾"
corrugated ducting hose to the inside of the
chair pump cover (for future connections if
necessary).
18. In the USC, open the air/water stop valves and
check for leaks.
Pictures for the following steps are located on
the next page (Figure 16 - Figure 18) .
NOTICE