Installation and Start-Up | 3-19
AC Power Connection and Fusing
Both the North American and European versions of the Model 933S
Analyzer require a power-disconnect switch (breaker), rated for at
least 250 V
AC
, 3 A and certified for the hazardous location (to satisfy
local electrical codes, the switch must be certified by the local author-
ity for the appropriate hazardous location). The power-disconnect
switch (breaker) must be connected to and mounted near the analyzer,
in an easily accessible area. The switch (breaker) must be clearly la-
beled (e.g., “AMETEK Model 933S Analyzer Main AC Power Discon-
nect Switch”).
For safety reasons during maintenance, this switch allows the main
AC power to be disconnected from the analyzer prior to performing
service on the analyzer. This switch (breaker) is to be supplied by
the customer/end user.
The analyzer must be operated from a grounded power source; failure
to do so will void the certification and warranty. Depending on analyzer
configuration, the supply voltage may be 115 V
AC
± 10 % (47–63 Hz) or
230 V
AC
± 10 % (47–63 Hz). The nominal operating voltage and power
consumption is indicated on a label on the front of the Ex d Lower En-
closure. Verify that the operating voltage indicated on the label agrees
with the operating voltage indicated on the documentation supplied with
the analyzer. The analyzer is intended for use in Installation Category II
(Overvoltage Category) and AC power requirements for each analyzer
system are specified on the system electrical drawings.
!
CAUTION
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