Det-Tronics X3301 Multispectrum IR Flame Detector User Manual

Page 17

95-8527

19.2

maINTENaNCE

Important

Periodic flamepath inspections are not
recommended, since the product is not intended
to be serviced and provides proper ingress
protection to eliminate potential deterioration of the
flamepaths.

WarnIng

The sensor module (“front” half of the detector)
contains no user serviceable components
and should never be opened. The terminal
compartment is the only part of the enclosure that
should be opened by the user in the field.

NOTE

Refer to the X3301 Safety manual (95-8582) for
specific requirements and recommendations
applicable to the proper installation, operation,
and maintenance of all SIL-Certified X3301
Flame Detectors.

To maintain maximum sensitivity and false alarm

resistance, the viewing windows of the X3301 must be

kept relatively clean. Refer to the following procedure

for cleaning instructions.

CLEANINg pROCEDuRE

CaUtIon

Disable any extinguishing equipment that is
connected to the unit to prevent unwanted
actuation.

To clean the windows and

plate, use the window

cleaner (p/n 001680-001) and a soft cloth, cotton swab,

or tissue and refer to the following procedure:

1. Disable any extinguishing equipment that is

connected to the unit.

2. Since the X3301 is less affected by contamination

than other detectors, removal of the

plate is

needed only under extreme conditions. In addition,

it is not necessary to achieve perfect cleanliness,

because IR is not significantly absorbed by slight

films of oil and/or salt. If a fault condition is still

indicated after cleaning, remove and clean the

plate using the

Plate Removal and Replacement

procedure.

3. In all environments, clean all three viewing windows

and reflector surfaces thoroughly. Use a cotton

swab and the Det-Tronics window cleaning solution.

Use Isopropyl alcohol for contaminations that the

Det-Tronics window cleaning solution can not

remove.

Important

When used in extreme environments, the reflective
surface of the detector

plate may eventually

deteriorate, resulting in reoccurring

faults and

the need for

plate replacement.

pLATE REMOvAL AND REpLACEMENT

1. Disable any extinguishing equipment that is

connected to the unit.

2. Loosen the two captive screws, then grasp the

plate by the visor and remove it from the detector.

See Figure 18.

3. Install the new (or cleaned)

plate.

NOTE

When installing the stainless steel plate, ensure
that the gasket is present and correctly seated to
prevent moisture or contaminants from penetrating
behind the plate. To ensure even seating, tighten
both screws equally.

4. Recalibrate the detector's

system. Refer to the

Inspector Monitor manual (95-8581) for instructions

regarding

plate replacement and

system

recalibration.

CaUtIon

Do not replace the

reflector plate without also

recalibrating the

system.

Recalibration of the

system requires the use of the

Inspector Connector Cable and Inspector Monitor

Software. These two items are included in the

replacement kit, or they can be purchased separately.

See Ordering Information for details.

LOOSEN TWO CAPTIVE SCREWS

GRASP VISOR AND
REMOVE

oi PLATE

B2106

Figure 18—

Plate Removal