Model 3680 Series ____________________________________________________________________
i
Read This Instruction Manual.
Failure to read, understand and follow the instructions in
this manual may result in damage to the unit, injury to operat-
ing personnel, and poor equipment performance.
CAUTION! All internal adjustments and maintenance must
be performed by qualified service personnel.
Refer to the serial tag on the back of this manual.
The material in this manual is for information purposes only. The
contents and the product it describes are subject to change with-
out notice. Thermo Electron Corporation makes no representa-
tions or warranties with respect to this manual. In no event shall
Thermo be held liable for any damages, direct or incidental, aris-
ing out of or related to the use of this manual.
MANUAL NO. 7003688
9
22052/FR-1762
2/2/04
Discontinued Models 3687 and 3689
ccs
8
21443
3/20/03
Removed strip chart recorder as an accessory
aks
7
21377/IN-3086
2/13/03
Clarified condenser cleaning
ccs
6
20358
10/2/01
Updated specs and refrigeration schematics for refrigerant amount change ccs
5
20201/FR-1531
7/13/01
Revised Section 3.1 refrigerator defrost function
aks
4
19174/FR1404
7/31/00
Revised electrical schematics and parts lists
aks
3
18542/IN-2738
18682/IN-2752
10/12/99
Updated 3688 schematic to include new defrost sensor 227960
Added schematics for 3687 and 3689
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2
18454/FR-1312
7/19/99
Added breaker switch location
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1
18322
5/19/99
Added Models 3684 and 3686
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0
IN-2697
4/15/99
Original manual
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