Graseby 3000/500, Руководство пользователя

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V o l u m e t r i c I n f u s i o n P u m p s
7
Replacing the LCD
If it is necessary to replace a pump’s LCD (LED backlit), you must
first establish if the pump is fitted with the older ‘EL type’ display.
This section explains how to identify an EL type display and how to
carry out the necessary modifications to the display board.
Note: Graseby Medical recommends that the technician responsible for
carrying out this work should have had relevant training, be familiar
with servicing this type of product and should be aware of all associated
precautions. Full instructions for disassembly and assembly of the pump
are given later in this chapter.
Identify the LCD type
You need to check on the display board to identify the LCD type. To
allow access to both the display board and the LCD:
1. Remove the four screws in the rear door of the front door assembly
2. Remove the two holding screws in the door handle assembly
3. Look on the display board, position U401.
If two wire links have been fitted as shown here, the LCD can be
directly replaced without any further modification. Follow the
instructions that are supplied with the replacement LCD.
However, if an Inverter is fitted at position U401, the display is the
EL type, so you must:
• Modify the display board as described over the page, to allow a
replacement LCD to work correctly with the 5-volt supply.
• Replace the door front, door rear, pressure plate springs and
spring brackets, to accommodate the new LCD which is larger
than the old EL type. See over the page for a list of the
replacement components and their part numbers.