Smiths Medical International Ltd.
Issue 5 (August 2004)
3200 Service Manual
3 — 1
CHAPTER 3
FUNCTIONAL DESCRIPTIONS
This Chapter explains how the 3200 operates. Reading this chapter will help a technician to
rectify any possible faults that may occur within the pump.
The functional descriptions of the 3200 may be divided into six separate areas. Each of these
functional descriptions are detailed separately in the sections following this list:
•
Drive system.
•
Internal occlusion system.
•
In-line occlusion system.
•
Electro/mechanical control system.
•
Sensing (alarm) systems.
•
Software.
Functional descriptions
Introduction
The motor, gearbox, leadscrew and associated components (
Figure 7.1
) are mounted on a
glass reinforced polycarbonate casing. The strength of this casing enables a precise
mechanical location to be achieved for the various components.
Both the inner and outer metal tubes are made of substantial material in order to eliminate
unwanted flexing.
The drive system comprises a stepper motor working through a gearbox which rotates a
leadscrew. A half nut/super nut assembly
engages onto the leadscrew, and the assembly
is also connected to a steel tube. The steel tube is connected to the plunger clamp.
Drive system
The rotation of the leadscrew moves the plunger clamp. This movement pushes ‘in’ the
plunger on the syringe being used (see below).
As the motor spindle rotates, the leadscrew also rotates and the half nut/super nut assem-
bly travels to the left - along the leadscrew. The half nut assembly pulls the outer of two
steel tubes to the left. This outer tube travels over and along a support tube; the support
tube is almost the length of the pump.
Introduction
Stepper motor
and leadscrew
The microcomputer and its associated software determines the speed of the motor.
A spring-loaded toggle mechanism is attached to the bottom of the half nut/ super nut. The
toggle mechanism enables the plunger clamp to be physically swung ‘in or out’ thus rotating
the outer metal tube so that the half nut is either fully ‘engaged or disengaged’ (respectively)
from the leadscrew.
Micro-
computer
Toggle
mechanism
Содержание Graseby 3200
Страница 15: ...CHAPTER 1 INTRODUCTION FEATURES and SPECIFICATION 3200 In line Pressure Syringe Pump ...
Страница 22: ...CHAPTER 2 CONFIGURATION DIAGNOSTICS and OCCLUSION THRUST 3200 In line Pressure Syringe Pump ...
Страница 37: ...CHAPTER 3 FUNCTIONAL DESCRIPTIONS 3200 In line Pressure Syringe Pump ...
Страница 43: ...CHAPTER 4 CIRCUIT DESCRIPTIONS 3200 In line Pressure Syringe Pump ...
Страница 70: ...CHAPTER 5 FAULT CODES CLEANING RENEWAL of FUSES and REPAIRS 3200 In line Pressure Syringe Pump ...
Страница 83: ...CHAPTER 6 FUNCTIONAL TESTS and MANUFACTURNG SETTINGS 3200 In line Pressure Syringe Pump ...
Страница 91: ...CHAPTER 7 ILLUSTRATED PARTS LIST 3200 In line Pressure Syringe Pump ...
Страница 95: ...Smiths Medical International Ltd 7 4 Issue 5 August 2004 3200 Service Manual 3200 Illustrated Parts List ...
Страница 105: ...CHAPTER 8 BRAUN PERFUSOR CONVERSION 3200 In line Pressure Syringe Pump ...
Страница 108: ...CHAPTER 9 DC INPUT VERSION of 3200 3200 In line Pressure Syringe Pump ...
Страница 111: ...APPENDIX FITTING a MODIFIED SIZE SENSOR FLAG 3200 In line Pressure Syringe Pump ...