Service Manual 73
© 2018 Nortek AS
3.3 Working Inside an Instrument
When opening the instrument, great care should be taken to keep the sealing surfaces clean and
protected from mechanical damage.
3.3.1 Changing a Battery Pack (Vector)
The following procedure outlines how to connect the battery or to install a new battery. A fresh
desiccant bag should be included in the pressure case, as humid air can condense enough water do
damage the electrical circuitry.
A. Remove the four #6-32 x ¾’’ titanium screws and washers holding the
end cap to the pressure case and remove the endbell.
B. Disconnect the 2-pin connector and pull the battery out of the
pressure case.
C: Insert the new battery into the pressure case and reattach the 2-pin
connector.
D: Reattach the endbell to the pressure case and mount with four
titanium bolts and washers. Make sure that there are no dust or particles
on the O-rings on the endbell, and that they are whole. Also, be careful
so that the internal wires are not squeezed between the endbell and the
housing. See Recommended torque when securing screws - you do not
need to fasten them too much if you have the POM housing
E: Test the instrument by collecting data without using an external
power source to ensure that the battery is properly connected. Make
sure to stop data collection so that the instrument will power down after
you are through testing it.
Because the battery pack uses standard alkaline batteries, you normally do not need to observe any
special precautions and/or procedures when you dispose old batteries. Caution! If you have lithium
batteries, keep in mind that you must be very careful and that disposal requires special precautions
and/or procedures. Rules for disposal of batteries, especially lithium batteries, vary from country to
country.
3.3.2 Accessing the Circuit Board (Vector)
The following procedure describes how to access the circuit board, necessary tools can be found in
the supplied toolkit.
A. Remove the four #6-32 x ¾” titanium screws and washers holding
the end cap to the pressure case.
B. Disconnect the 2-pin (battery) and 9-pin (harness) connectors
C. Pull the battery out of the pressure case.
D. Remove the #6-32 x ¾” titanium screws and washers holding the