Field Replacement; Sensor Replacement; Battery Replacement - United Electric Controls VANGUARD Installation And Operation Instruction Manual

4.0 FIELD REPLACEMENT

4.1 Sensor Replacement

THE SENSOR IS CERTIFIED INTRINSICALLY SAFE. SENSOR
REPLACEMENT MAY BE PERFORMED IN THE FIELD WITHOUT
A HOT WORK PERMIT.
ONLY FLEXSENSE™ SENSORS PROVIDED BY UNITED
ELECTRIC CONTROLS ARE COMPATIBLE WITH THIS DEVICE.
DO NOT ATTEMPT TO DISASSEMBLE THE SENSOR AS THIS
COULD DAMAGE THE SENSOR AND VOID HAZARDOUS
LOCATION APPROVALS, AND MANUFACTURER WARRANTY.
WHEN REPLACING THE SENSOR, PROPER CARE SHOULD BE
TAKEN TO ENSURE THAT SURROUNDING ENVIRONMENT
IS FREE OF TOXIC OR COMBUSTIBLE GASES. IT IS
RECOMMENDED THAT OTHER GAS DETECTION BE
DEPLOYED DURING SENSOR REPLACEMENT TO PREVENT
EXPLOSION, SERIOUS INJURY OR DEATH.
SENSORS MUST BE ACTIVATED AFTER INSTALLATION.
Locate the FLEXsense™ sensor housing (see Figure 43)
and retract the sensor locking pin, twisting 90 degrees
to lock into retracted position. Remove the gas sensor
assembly by firmly pulling downward and releasing it
from the sensor unit (see Figure 44). Remove the new
FLEXsense™ sensor from its package and follow the
instructions from Section 2.2 Sensor Installation.
NOTE: It is not necessary to remove the battery during
sensor replacement.
UE RECOMMENDS PERFORMING THE SENSOR CALIBRATION
PROCEDURE AS OUTLINED IN SECTION 3.2 SENSOR
CALIBRATION & BUMP TEST.
Figure 43

4.2 Battery Replacement

THE BATTERY COMPARTMENT IS CERTIFIED INTRINSICALLY
SAFE. BATTERY REPLACEMENT MAY BE PERFORMED IN THE
FIELD WITHOUT A HOT WORK PERMIT.
ONLY BATTERY PACKS PROVIDED BY UNITED ELECTRIC
CONTROLS ARE COMPATIBLE WITH THIS DEVICE.
WHEN REPLACING THE BATTERY, PROPER CARE
SHOULD BE TAKEN TO ENSURE THAT SURROUNDING
ENVIRONMENT IS FREE OF TOXIC OR COMBUSTIBLE GASES.
IT IS RECOMMENDED THAT OTHER GAS DETECTION BE
DEPLOYED DURING BATTERY REPLACEMENT TO PREVENT
EXPLOSION, SERIOUS INJURY OR DEATH.
FOLLOW PROPER DISPOSAL REGULATIONS FOR LITHIUM
BATTERIES AS APPLIES TO THE LOCAL JURISDICTION.
BATTERIES ARE NOT RECHARGEABLE.
THE SENSOR MUST BE CALIBRATED AFTER BATTERY
REPLACEMENT (SEE SECTION 3.2.1).
Locate the battery compartment and remove the
battery compartment cover to expose the battery.
Remove the battery by gripping the back of the battery
pack and firmly pulling back from the enclosure,
releasing it from the battery socket. Slide the battery
pack out of the compartment (see Figure 45).
Remove the new battery from its packaging and follow
steps 3-6, 9 from Section 2.1 Battery Installation.
Figure 44
15
Figure 45
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