EXFO OTDR 2 - Manual (Page 167)

OTDR 159
11 Maintenance
To help ensure long, trouble-free operation:

Always inspect fiber-optic connectors before using them and clean
them if necessary.

Keep the unit free of dust.

Clean the unit casing and front panel with a cloth slightly dampened
with water.

Store unit at room temperature in a clean and dry area. Keep the unit
out of direct sunlight.

Avoid high humidity or significant temperature fluctuations.

Avoid unnecessary shocks and vibrations.

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.
Cleaning EUI Connectors
Regular cleaning of EUI connectors will help maintain optimum
performance. There is no need to disassemble the unit.
W
ARNING
The use of controls, adjustments and procedures, namely for
operation and maintenance, other than those specified herein may
result in hazardous radiation exposure or impair the protection
provided by this unit.
I
MPORTANT
If any damage occurs to internal connectors, the module casing will
have to be opened and a new calibration will be required.