Syringe Assembly (CD18-E1)

Removal

Action Steps Reference

Prerequisite

1.

Place the instrument in Standby and turn OFF the power.

Open Upper Front Cover

1.

Open the upper front cover.

Remove Lower Front Cover

1.

Remove Lower Front Cover (RR-A1.02 Lower Front Cover).

Remove Top Cover

1.

Remove Top Cover (RR-A1.03 Top Cover).

Open Top Inner Cover

1.

Open Top Inner Cover (RR-B1.04 Hemoglobin Flow Cell).

Remove Connectors

1. Mark and remove the cable connectors at the top of the cable distribution board [1]. There are four cable connectors that must be unplugged from this board: J20, J21, J22, and J23.

2.

Cut all cable ties securing cables to other cables (there are approximately 6-8 cable ties).

Remove Wash Block Tubing

1. Using a 3/32-inch hex wrench, remove the clamp securing the aspiration tubing [3].

2. Using an adjustable wrench, loosen the screw securing the two (2) clamps [2]

securing the wash block tubing.

3. Label and disconnect the two (2) tubes from the Wash Block (top is diluent and bottom is waste).

4.

Route the clamps with attached tubing through the cutout [4] on the left side of the Sample Probe Driver assembly chassis [2].

Remove Sample Probe Tubing

1.

Disconnect the tubing from the top of the Sample Probe.

Remove Sample Probe Motor Cable

1.

Disconnect the cable connectors J1 [2] [5] (ribbon) and J2 [3] [6] (power) from both the top [1] and bottom [4]

chopper PCBs.

Remove Sample Probe Assembly

1. Using a Phillips-head screwdriver, remove the two (2) top and two (2) bottom mounting screws [1] securing the Sample Probe Driver Assembly to the chassis.

2.

Lift the Sample Probe Driver Assembly out of the instrument.

Note

Before lifting the Sample Probe Driver Assembly completely out of the instrument, check to make sure that all cables are disconnected. Disconnect any cables that you find still attached, making sure to mark them before unplugging.

Replacement

Action Steps Reference

Install Sample Probe Assembly

1.

Install in reverse order of disassembly.

Verification

Action Steps Reference

Verify Normal Operation

1.

Run three (3) cycles and verify normal operation, e.g. binding, liquid

leaks, etc.

Verify Sample Probe Alignment

1.

Perform VP-12 Sample Probe Alignment Check.

Hazard

Removal

Action Steps Reference

Prerequisite

1.

Place the instrument in Standby and turn OFF the power.

Remove Top Cover

1.

Remove Top Cover (RR-A1.03 Top Cover).

Open Top Inner Cover

1.

Open Top Inner Cover (RR-B1.04 Hemoglobin Flow Cell).

Remove Left Side Cover

1.

Remove the left side cover (see RR-A1.06 Left Cover).

Remove Fan Note

The fan above the Diluent Syringe Driver Assembly must be removed before the driver assembly can be removed.

1.

Using a Phillips-head screwdriver, remove the two (2) top fan

screws [1].

Note

Screws are secured by a nut. Verify that ALL nuts are removed prior to removing fan.

2.

Using a Phillips-head screwdriver,

loosen the two (2) bottom fan bracket screws [2].

Note

If necessary, rotate the split pin installed on the directional valve drive linkage of the Diluent Syringe to allow the fan to be removed.

3.

Move the fan to the rear.

Disconnect Diluent Syringe Driver Assembly

1.

Disconnect the tubing [3] on both sides of the directional valve [2] at the top of the Diluent Syringe [1].

Note

Use absorbent tissue to capture any excess liquid.

2. Disconnect ribbon cable 9520444 from the back of the bottom chopper PCB.

3.

Disconnect ribbon cable 9520445 from the top chopper PCB.

Remove Diluent Syringe Driver Assembly

Note

Lyse Syringe Driver Assembly [1], Diluent Syringe Driver Assembly [2], and Sample Syringe Driver

Assembly [3].

1. Using a 7/64-inch hex wrench, remove the two (2) hex screws [5] on the front of the base plate [4] located at the bottom of the diluent driver assembly [2].

2. Using a 7/64-inch hex wrench, loosen the hex screw [6] from the

rear base plate [4] of the Diluent Syringe Driver Assembly [2].

3.

Slide the Diluent Syringe Driver Assembly [2] forward, tilt it back, and remove it through the right side of the chassis.

Replacement

Action Steps Reference

Install Diluent Syringe Driver Assembly

1.

Install in reverse order of disassembly.

Verification

Action Steps Reference

Verify Operation

1.

Verify VP-10 Diluent and Sample Verification/Adjustment.

Verify Quality

1.

Run three (3) levels of CELL-DYN controls and verify results are within

Controls acceptable assay limits.

RR-E1.04 Sample Syringe Driver Assembly

Removal

Action Steps Reference

Prerequisite

1.

Place the instrument in Standby and turn OFF the power.

Remove Top Cover

1.

Remove Top Cover (RR-A1.03 Top Cover).

Open Top Inner Cover

1.

Open Top Inner Cover (RR-B1.04 Hemoglobin Flow Cell).

Remove Left Side Cover

1.

Remove the left side cover (see RR-A1.06 Left Cover).

Remove Fan

1.

Remove the fan located above the Diluent Syringe Driver Assembly (see Remove Fan, RR-E1.02 Diluent Syringe Driver Assembly).

Disconnect Tubing

1.

Disconnect the tubing [2] on top of the Sample Syringe Driver

Assembly [1].

Disconnect Connectors

1. Cut the cable ties securing the cable harness to the back of the syringe assembly.

2.

Disconnect ribbon cable 9520441 from the chopper driver PCB.

Remove Sample Syringe Driver Assembly

Note

Lyse Syringe Driver Assembly [1], Diluent Syringe Driver Assembly [2], and Sample Syringe Driver

Assembly [3].

1. Using a 7/64-inch hex wrench, remove the two (2) hex screws [5]

on the front base plate [4].

2. Using a 7/64-inch hex wrench, loosen the hex screw [6] from the rear base plate [4] of the Sample Syringe Driver Assembly [3].

3.

Slide the Sample Syringe Driver Assembly [3] forward, tilt it back, and remove it through the right side of the chassis.

Replacement

Action Steps Reference

Install Sample Syringe Driver Assembly

1.

Install in reverse order of disassembly.

Verification

Action Steps Reference

Verify Sample Volume

1.

Verify sample volume (VP-10 Diluent and Sample Verification/Adjustment).

Verify Quality Controls

1.

Run three (3) levels of CELL-DYN controls and verify results are within acceptable assay limits.

RR-E1.06 Lyse Syringe Driver Assembly

Removal

Action Steps Reference

Prerequisite

1.

Place the instrument in Standby

and turn OFF the power.

Remove Top Cover

1.

Remove Top Cover (RR-A1.03 Top Cover).

Open Top Inner Cover

1.

Open Top Inner Cover (RR-B1.04 Hemoglobin Flow Cell).

Remove Left Side Cover

1.

Remove the left side cover (see RR-A1.06 Left Cover).

Disconnect Tubing/Cables

1. Disconnect the tubing [2] from the top of the Lyse Syringe [1].

2.

Disconnect ribbon cable 9520446 from the chopper driver PCB.

Remove Lyse Syringe Driver Assembly

Note

Lyse Syringe Driver Assembly [1], Diluent Syringe Driver

Assembly [2], and Sample Syringe Driver Assembly [3].

1. Using a 7/64-inch hex wrench, remove the two (2) hex screws [5]

on the front base plate [4].

2. Using a 7/64-inch hex wrench, loosen the hex screw [6] from the rear base plate [4] of the Lyse Syringe Driver Assembly [1].

3.

Slide the Lyse Syringe Driver

Assembly forward, tilt it back, and remove it through the right side of the chassis.

Replacement

Action Steps Reference

Install Lyse Syringe Driver Assembly

1.

Install in reverse order of disassembly.

Verification

Action Steps Reference

Verify Quality Controls

1.

Run three (3) levels of CELL-DYN controls and verify results are within acceptable assay limits.

In document cd1800sm (Page 119-129)