Helmer Scientific OuickThaw DH2, Operation Manual

360094-1/M

14

Operation

1 

Enter Level 1 program mode:

a 

Press and hold the 

UP

 and 

DOWN

 buttons simultaneously for approximately 3 seconds.

b 

“tunE” and “oFF” flash on the display.

c 

The temperature controller is now in Level 1 program mode.

2 

Select the parameter to be changed:

a 

Press and release the 

UP

 or 

DOWN

 buttons until the desired parameter flashes on the display.

b 

For the High Temperature setting, select the “AL.hi” parameter.

c 

For the Low Temperature setting, select the “AL.Lo” parameter.

3 

Change a parameter value:

a 

Press and hold the 

*

 button.

b 

Press the 

UP

 or 

DOWN

 buttons to change the parameter value.

4 

Release all buttons to exit the parameter.  New settings are saved.

5 

Exit program mode:

a 

Press and hold the 

UP

 and 

DOWN

 arrow buttons simultaneously for approximately 3 seconds, or

b 

the current chamber temperature is displayed.

10 Components

10 .1 

Front and Sides

A

B

C

D      E                                F

G

H

I

Front and left sides (115 V DH4 model shown).

Label Description

Label Description

A

Fan (DH8 100 V models)

F

Control panel

B

Drain port

G

Cover

C

Drain tube with coupling valve

H

Basket

D

Drain port cover

I

Plasma overwrap holder

E

Product specification label