NSK Varios 750 - 11. Care and Maintenance; O-ring and Water Filter Replacement; Irrigation Pump Replacement

1312
Fig. 32
(1) Changing O-ring
· Handpiece (Varios 750)
An O-ring is located between the handpiece and the
Handpiece Cord Connector. Use a pointed tool to remove,
and mount a new one in the groove. (Fig. 31)
Optional O-ring : Order No. 0312012100
11. Care and Maintenance
· Use the Tip Holder for Tips removed from the handpiece.
· The Tip Holder is autoclavable and can hold up to 5
types at once. To autoclave, tilt the Tips in the direction
of the arrow in fig.30.
· Bottle ( )
Remove two O-rings at the Bottle Joint with a pointed
tool, and mount new ones into the grooves. (Fig. 32)
Optional O-ring : Order No. 0312090100
Use of BottleUse of Bottle
O-ringO-ring
O-ring
for Bottle
O-ring
for Bottle
Fig. 30
10. Tip Holder
Fig. 31
Fig. 34
2) When the Water Filter case is separated, the Water
Filter can be removed as shown in Fig. 34.
Replace with a new one and reassemble the filter in
the reverse order.
Optional Water Filter : Order No. U387042
(3) Changing the Irrigation Pump ( )
1) Remove the Bottle in straight up motion.
2) Push the Joint Ring in to release the Tube Connector and disconnect the Irrigation Tube. (Fig. 35)
3) Remove the Irrigation Tube from connector. (Fig. 36)
4) Remove the Irrigation Tube from the groove on the reverse side of the Control Unit. (Fig.37)
5) Turn the Irrigation Pump counterclockwise until it clicks. Pull out. Align the replacement Irrigation Pump with the drive
shaft at the same released position and turn clockwise until it clicks. (Fig. 38)
6) Insert the Irrigation Tube into the Groove on the reverse side with slack between pump and groove.
7) Connect the Irrigation Tube to the connector on the handpiece cord connector.
8) Insert the Tube Connector to the Joint Ring until it clicks.
Optional Irrigation Pump : Order No. U424061
Assemble the Water Filter in the correct direction as
shown in Fig. 34.
CAUTION
Water Filter
Control Unit Side
O-ring
Use of BottleUse of Bottle
Fig. 35 Fig. 36
Fig. 37 Fig. 38
Joint RingJoint Ring
Tube ConnectorTube Connector
PushPush
Groove
Irrigation Tube
Irrigation PumpIrrigation Pump
Lock
Lock
Release
Release
Irrigation TubeIrrigation Tube
ConnectorConnector
Fig. 33
(2) Changing Water Filter ( )
1) Close the water valve of the dental unit to which Varios
750 or Varios 750 LUX is connected. Mount two
Spanner Wrenches (5X8) as shown in Fig. 33, and turn
in the directions shown. When water tube is getting
twisted by this, relieve the twist by turning it, as its end
on the Control Unit side is free to turn.
Water Filter CaseWater Filter Case
Use of City WaterUse of City Water
· Before replacing the Irrigation Pump, wipe off excess water on pump and Drive Shaft. The wet Drive Shaft
and rollers can be slippery and cause improper operation.
·
Insert the replacement Irrigation Pump into the Drive Shaft straight (slow and soft) to prevent damaging rollers in
pump.
· Run the replaced Irrigation Pump about 10 seconds on largest setting of Water Volume before operation to adopt
Irrigation Tube to new pump.
CAUTION
Tip
Tip Holder