Hach 900 MAX ユーザーズマニュアル

8990int.fm

The keypad includes the numeric keypad, soft keys, and function keys.

Numeric Keypad
The numeric keypad consists digits 0 through 9, a +/- key, and a decimal key.

“Soft” Keys
Soft keys are blank, white keys located to the left and right of the display. If no 
function is shown for a specific key, that key is not currently active. The soft 
key labels appear on the display and indicates (with a straight line) the proper 
soft key to push for that action.

In some cases during a programming step an item from a list needs to be 
selected. The soft keys on the right side of the display will change to display 

 and 

 arrows. Scroll through the list of choices. 

Power ON/OFF Key
To turn the instrument on, press the 

 key. When the instrument is turned 

on, a green light located next to the 

key flashes to indicate that the 

sampler power is turned on. To turn the instrument off, press the 

 key.

Function Keys
Three white function keys (

) are located just above the numeric keypad 

re used often while operating the sampler. These functions are dedicated 
keys to allow quick access. 

The liquid crystal display (LCD) works in conjunction with the four soft keys. 
When a soft key changes function, the display shows the new function. 

Menu Bar
The Menu Bar appears in a black band on the top edge of the display. 
The upper left corner of the menu bar shows the time and date. The upper 
right corner shows the name of the current menu (

This is the starting point to get to any other point in the program. Press the Main Menu key at any time 
during programming to return to the Main Menu Screen. The current action is cancelled if changes are not 
yet accepted.

Manually controls the operation of the sample pump and the distributor arm.

 soft key: Moves the distributor arm to the user selected bottle. Used to verify the 

operation of the distributor or when repositioning the arm if it was moved by hand.

 soft key: Takes a sample in the same manner as when a program is running. Includes all 

pre-rinses and sample retries, if programmed.

soft key: Allows manual control of the pump in both forward and reverse directions. Once 

started, the pump is stopped by pressing any key.

Runs (or resumes) a program and stops a currently running program.