97
Model FT4X
MAINTENANCE
Maintenance: Precautions
PRECAUTIONS
WARNING!
BEFORE ATTEMPTING ANY MAINTENANCE, TAKE THE NECESSARY
SAFETY PRECAUTIONS BEFORE REMOVING THE PROBE FROM THE DUCT
(EXAMPLE: PURGE LINES OF TOXIC AND/OR EXPLOSIVE GAS, DEPRESSURIZE,
ETC...).
WARNING!
EXPLOSION HAZARD. DO NOT REMOVE OR REPLACE COMPONENTS
OR FUSES UNLESS POWER HAS BEEN SWITCHED OFF WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
WARNING!
EXPLOSION HAZARD. DO NOT DISCONNECT EQUIPMENT WHEN A
FLAMMABLE OR COMBUSTIBLE ATMOSPHERE IS PRESENT.
Access to Electronics
Accessing electronics is not normally required for maintenance purposes. If a loose connection
is suspected, unscrew the rear cap of the meter to access the wiring terminations.
CAUTION!
BE SURE POWER TO METER IS SWITCHED OFF BEFORE ATTEMPTING
TO ACCESS ELECTRONICS. If there is a problem and a loose connection is not found,
please contact Fox Thermal Customer Service for technical assistance at (831) 384-
4300.
Specific Conditions of Use:
1.
The flameproof joints of the equipment are not intended to be repaired. Consult the
manufacturer if dimensional information on the flameproof joints is necessary.
2. Refer to the manufacturer’s instructions to reduce the potential of an electrostatic charging
hazard on the equipment enclosure.
3.
The equipment temperature code ratings are dependent on the enclosure configuration
(local or remote). Refer to the following table for specific temperature code markings.
Model Code
Temperature Code
Marking- Divisions
(All)
Temperature Code
Marking-Zones (Gas)
Temperature Code
Marking-Dust
Enclosure
(variable "b")
Main
Enclosure
Remote
Enclosure
Main
Enclosure
Remote
Enclosure
Main
Enclosure
Remote
Enclosure
E1
T4
N/A
T4
N/A
T135°C
N/A
E3
T6
T4
T6
T4
T85°C
T135°C