PN 305892901, Rev S
Electrical Connections
This analyzer has an internal AC voltage selector that must be set cor-
rectly to prevent damage. Only qualied service personnel may access
the interior of the analyzer. If qualied service personnel are not avail-
able, contact AMETEK Service.
Voltage Selection
The 3050-RM Analyzer comes from the factory set to operate on 120 VAC. If
you must switch the setting to 240 VAC (or back to the 120 VAC setting), follow
the procedure below.
You must follow this procedure to prevent damage to/malfunction of
the analyzer.
To change the voltage setting (Figure 2-6):
1. Ensure that the area is non-hazardous and the analyzer has been de-ener-
gized and power disconnected
2. Remove the Terminal Cover the analyzer Back Panel.
3. Select 115 or 230 VAC on the voltage selector (Item 10) located on the top
left-hand side of the User Interface board.
4. Replace Terminal Cover.
5. Clearly mark the operating voltage on the rear panel analyzer serial num-
ber label in the lower right-hand corner
ON
ON
TB3
TB2
TB1
ANALOG
OUTPUT
DATA
VALID
CONC
ALARM
SYSTEM
ALARM
OUT
- +
IN
RD TD
+ - + -
LINE VOLTAGE
FUSE
L N G
1 2 3
RS-485
TERMINATOR
1 2 3 4 5 6 7 8 9 10 11 12 13 14
115
230
Voltage
Selection
Switch
10
Figure 2-6.
115 / 230 voltage selection
switch.
2-12 | 3050-RM Moisture Analyzer
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