Hach DR300 Service Manual

Figure 10 Set serial number
5.4 Replace the display
Items to collect:
• Display
• Display frame
• Backlight reflector label
• Connector, LCD zebra (2x)
• Krytox oil (item no. 16004801)
Step Description Picture
1 Open the instrument, refer to Open the instrument on page 35.
Remove the display.
2 To install a new display, remove the protective foil from the
front and back side of the display.
Insert the display in the housing top.
Note: Make sure that the bright grey surface faces the inside of the
housing.
Note: Make sure that the orientation of the nut is in the lead.
Repairs
45

Hach DR300 Specifications

General

Type	Portable Spectrophotometer
Operating Temperature	0 to 50 °C
Method	Pre-programmed methods
Light Source	LED
Wavelength Accuracy	±2 nm
Resolution	0.001 Abs
Display	LCD
Measurement Method	Absorbance
Parameter	Various
Photometric Range	0 to 2.5 A
Dimensions	230 x 93 x 280 mm (9.1 x 3.7 x 11.0 in)
Photometric Accuracy	±0.005 Abs