Service manual

PN 4237242C
4.21-1
SERVICE AND REPAIR PROCEDURES
SYRINGE ASSEMBLY
4
4.21 SYRINGE ASSEMBLY
Tools/Supplies Needed
B #2 Phillips-head screwdriver
B 1/4 in. HEX-nut driver
B 1/16 in. HEX-key wrench
B Large flat-blade screwdriver
B LOCTITE
®
242 THREADLOCKE2 adhesive, PN 1601018-9
Removal
1.
From the Main Menu, select 5 SPECIAL FUNCTIONS
tt
5 SERVICE
tt 2 REPLACE SYRINGE.
2. Turn OFF the instrument’s power.
3. Open the lower chassis, as directed under Heading 4.4, to completely expose the
Probe/Wipe Traverse Assembly.
4. Remove the Phillips-head screw (in the center) that secures the metal shield. Remove the
metal shield that covers the lower portion of the syringes.
5. Remove the 1/4-in. HEX-head screws at the bottom of each plunger (Figure 4.21-1).
6. Unscrew the syringe bodies from the Luer fittings (Figure 4.21-1).
7. Remove the door from the Syringe Assembly by removing the hinge bracket
(Figure 4.21-1) from the Syringe Assembly. It is fastened to the instrument with three
Phillips-head screws and one nut.
8. Remove the Syringe Assembly from the unit. Four Phillips-head screws remain that
fasten the Syringe Assembly to the lower chassis (Figure 4.21-1).
r Two vertically-oriented screws are threaded to the floor of the lower chassis.
r Two screws remain along the top of the assembly, one left and one center.
9. Attach a hemostat to the diluent tube.
10. Slide the assembly out of the lower chassis:
a. When it is far enough out, remove the three tubes connected to the syringe
manifolds.
b. Slide the assembly out further until the cables can be disconnected. There are four
cables and they connect to the rear wall of the syringe cavity.
11. Loosen the screws fastening the motor associated with the syringe components that you
are replacing. If the motor is to be replaced, remove the screws, being careful not to lose
standoffs and nuts.
C