EXFO Photonic Solutions Div. EPM-ELS-50: 6 Maintenance

6 Maintenance

This product contains no user-serviceable parts. However, it contains sensitive

electronic and optical components, and should be handled carefully and stored in

its carrying case when not in use.

To help ensure long, trouble-free operation:

³ Always inspect fiber-optic connectors before using them and clean them if

necessary.

³ Keep the unit free of dust.

³ Clean the unit casing and front panel with a cloth slightly dampened with water.

³ Store unit at room temperature in a clean and dry area. Keep the unit out of

direct sunlight.

³ Avoid high humidity or significant temperature fluctuations.

³ Avoid unnecessary shocks and vibrations.

³ If any liquids are spilled on or into the unit, turn off the power immediately,

disconnect from any external power source, remove the batteries and let the

unit dry completely.

WARNING

Use of controls, adjustments, and procedures for operation and

maintenance other than those specified herein may result in

hazardous radiation exposure.

EPM-50/ELS-50 13

Maintenance 14

Cleaning EUI Connectors

Regular cleaning of EUI connectors will help maintain optimum performance. There

is no need to disassemble the unit.

IMPORTANT

If any damage occurs to internal connectors, the module casing will

have to be opened and a new calibration will be required.

To clean EUI connectors:

1. Remove the EUI from the instrument to expose the connector baseplate and

ferrule.

Turn

Pull

Push

2. Moisten a 2.5 mm cleaning tip with one drop of isopropyl alcohol (alcohol may

leave traces if used abundantly).

3. Slowly insert the cleaning tip into the EUI adapter until it comes out on the other

side (a slow clockwise rotating movement may help).

3

4

5

4. Gently turn the cleaning tip one full turn, then continue to turn as you withdraw

it.

5. Repeat steps 3 to 4 with a dry cleaning tip.

Note: Make sure you don’t touch the soft end of the cleaning tip.

6. Clean the ferrule in the connector port as follows:

6a. Deposit one drop of isopropyl alcohol on a lint-free wiping cloth.

IMPORTANT

Since isopropyl alcohol is not absolutely pure, it may leave residues

if used abundantly or left to evaporate (about 10 seconds).

Avoid contact between the tip of the bottle and the wiping cloth,

dry the surface quickly, and use a bottle that distributes only a drop

of alcohol at a time.

6b. Gently wipe the connector and ferrule.

6c. With a dry lint-free wiping cloth, gently wipe the same surfaces to ensure

that the connector and ferrule are perfectly dry.

6d. Verify connector surface with a portable fiber-optic microscope (for

example, EXFO’s FOMS) or fiber inspection probe (for example, EXFO’s

FIP).

WARNING

Verifying the surface of the connector WHILE THE UNIT IS ACTIVE

WILL result in permanent eye damage.

7. Put the EUI back onto the instrument (push and turn clockwise).

8. Throw out cleaning tips and wiping cloths after one use.

EPM-50/ELS-50 15

Maintenance 16

Cleaning Fixed Connectors

Regular cleaning of connectors will help maintain optimum performance. Do not try

to disassemble the unit. Doing so would break the connector.

To clean fixed connectors:

1. Fold a lint-free wiping cloth in four to form a square.

2. Moisten the center of the lint-free wiping cloth with only one drop of isopropyl

alcohol.

IMPORTANT

Alcohol may leave traces if used abundantly. Avoid contact between

the tip of the bottle and the wiping cloth, and do not use bottles

that distribute too much alcohol at a time.

3. Gently wipe the connector threads three times with the folded and moistened

section of the wiping cloth.

IMPORTANT

Isopropyl alcohol takes approximately ten seconds to evaporate.

Since isopropyl alcohol is not absolutely pure, evaporation will leave

microscopic residue. Make sure you dry the surfaces before

evaporation occurs.

4. With a dry lint-free wiping cloth, gently wipe the same surfaces three times with

a rotating movement.

5. Throw out the wiping cloths after one use.

6. Moisten a cleaning tip (2.5 mm tip) with only one drop of isopropyl alcohol.

IMPORTANT

Alcohol may leave traces if used abundantly. Avoid contact between

the tip of the bottle and the cleaning tip, and do not use bottles that

distribute too much alcohol at a time.

7. Slowly insert the cleaning tip into the connector until it reaches the ferrule

inside (a slow clockwise rotating movement may help).

7

8

9

8. Gently turn the cleaning tip one full turn.

9. Continue to turn as you withdraw the cleaning tip.

10. Repeat steps 7 to 9, but this time with a dry cleaning tip (2.5 mm tip provided by

EXFO).

Note: Make sure you don’t touch the soft end of the cleaning tip and verify the

cleanliness of the cotton tip.

11. Throw out the cleaning tips after one use.

Cleaning Detector Ports

Regular cleaning of detectors will help maintain measurement accuracy.

IMPORTANT

Always cover detectors with protective caps when unit is not in use.

To clean detector ports:

1. Remove the protective cap and adapter (FOA) from the detector.

2. If the detector is dusty, blow dry with compressed air.

3. Being careful not to touch the soft end of the swab, moisten a cleaning tip with

only one drop of isopropyl alcohol.

IMPORTANT

Alcohol may leave traces if used abundantly. Do not use bottles that

distribute too much alcohol at a time.

4. While applying light pressure (to avoid breaking the detector window), gently

rotate the cleaning tip on the detector window.

5. Repeat step 4 with a dry cleaning tip or blow dry with compressed air.

6. Discard the cleaning tips after one use.

EPM-50/ELS-50 17

Maintenance 18

Replacing Batteries

Your unit requires three AA alkaline or rechargeable

batteries.

To replace batteries:

1. Turn off the unit.

2. Open the battery compartment door located at the

back of the unit.

3. Replace batteries, respecting the polarity as shown.

4. Close the battery compartment door.

WARNING

Do not throw batteries into fire or water and do not short-circuit

the batteries’ electrical contacts. Do not disassemble.

Recalibrating the Unit

Manufacturing and service center calibrations are based on the ISO/IEC 17025

Standard, which states that calibration documents must not contain a

recommended calibration interval, unless this has been previously agreed upon

with the customer.

Validity of specifications depends on operating conditions. For example, the

calibration validity period can be longer or shorter depending on the intensity of use,

environmental conditions and unit maintenance. You should determine the

adequate calibration interval for your unit according to your accuracy requirements.

Under normal use, EXFO recommends calibrating your unit every year.

Note: The FlexCare warranty program includes Calibration/Verification

packages (see Service and Repairs on page 25).

Note: Recalibration only applies to the EPM-50 Power Meter.

Recycling and Disposal (Applies to European

Union Only)

Recycle or dispose of your product (including electric and electronic

accessories) properly, in accordance with local regulations. Do not

dispose of it in ordinary garbage receptacles.

This equipment was sold after August 13, 2005 (as identified by the

black rectangle).

³ Unless otherwise noted in a separate agreement between EXFO and a

customer, distributor or commercial partner, EXFO will cover costs related to

the collection, treatment, recovery and disposal of end-of-lifecycle waste

generated by electronic equipment introduced after August 13, 2005 to an

European Union member state with legislation regarding Directive 2002/96/EC.

³ Except for reasons of safety or environmental benefit, equipment manufactured

by EXFO, under its brand name, is generally designed to facilitate dismantling

and reclamation.

For complete recycling/disposal procedures and contact information, visit the EXFO

Web site at www.exfo.com/recycle.

EPM-50/ELS-50 19