Manuals / Hach / Household Appliance / Indoor Furnishings

Hach 900 8 Internal Desiccant Module, 5.9Circuit Board Identification, Circuit Board Description

Models: 900

1 52
Download 52 pages 55.68 Kb
Page 35
Image 35
Section 5

Section 5

5.8 Internal Desiccant Module

The Internal Desiccant Module (Cat. No. 787) consists of a moisture-absorbent material inside a poly bag. If the humidity indicator on the front panel turns pink, replace the module and the back panel perimeter gasket. The desiccant module is located under the CPU board.

Note: The desiccant module cannot be recharged by heating. Do not attempt to bake the desiccant module in an oven to remove the moisture as this could be a fire hazard.

5.9Circuit Board Identification

Figure 10 shows the 900 Composite Sampler circuit board, including:

•Placement of all connectors

•EPROM location

•Lithium Memory Battery

•Desiccant Module installation

Figure 10 Circuit Board Description

10

9

8

7

1

900 Main Circuit Board

blk 5.9Circuit Board Identification shld Figure 10 Circuit Board Description wht Manual background

rd blk

2

3

4

5

6

 

Page 35

8544Maintenance.fm

Internal Desiccant Module

Page 34 Page 36
Page 35
Image 35
Hach 900 manual 8 Internal Desiccant Module, 5.9Circuit Board Identification, Circuit Board Description
Page 34 Page 36

FAQ

What is the Internal Desiccant Module?

The Internal Desiccant Module Cat.No.787 consists of a moisture-absorbent material inside a poly bag. If the humidity indicator on the front panel turns pink, replace the module and the back panel perimeter gasket.

Can the desiccant module be recharged?

The desiccant module cannot be recharged by heating. Do not attempt to bake it in an oven to remove the moisture as this could be a fire hazard.

Where is the desiccant module located?

The desiccant module is located under the CPU board of the 900 Composite Sampler.