SIGMA SQM-160 - Manual (Page 31)

Chapter 5 Maintenance
5-1
5.0 Introduction
W ARNING : There are no user adjustments, or serviceable parts, inside the SQM-160.
For maintenance or repair, contact
Sigma Instruments
1318 Duff Drive
Fort Collins, CO 80524 USA
970-416-9660
5.1 Fuse Replacement
W ARNING : Remove the power cable before replacing the fuse.
The SQM-160 is shipped with a ½ A Fuse for use with 90–120 VAC. If your line voltage
is 180–240 VAC, replace the fuse with the ¼A fuse included with your SQM-160.
W ARNING : Always replace the Line Fuse with the same size and type fuse
specified above.
F u s e 1 / 2 A S B a t 1 2 0 V A C
F u s e 1 / 4 A S B a t 2 4 0 V A C
Line Fuse
M a n u f a c t u r e d B y Σ
M o d e l N o . S Q M - 1 6 0
Ser No. 80901
i n s t r u m e n t s
S i g m a
Sensor 1 Sensor 2
RS-232
Option A Card
Relay I/O
Option B Card
2 2 0 1 1 0
1 0
Ground
Rate T h i c k
3 4 5 6