Chapter 1
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BI7717-11
1409 Multipoint Sampler
LumaSense Technologies A/S
Service Manual
Page 7 of 28
1.1
Introduction to the Service manual
This Service Manual is intended for the service and maintenance of the 1409
Multipoint Sampler, hereafter referred to as the 1409.
It will provide the service engineer with information about the operating
principle on a technical level and the use of the Service software BZ7006 for
fault finding and testing.
A Service Note that will be published on our web site,
http://innova.lumasenseinc.com
,
informs any product change that will impair the safety or performance of the
device.
The operation and maintenance procedures are fully described in the Technical Documentation
BE6037 delivered with the 1409 and the service technician must fully acquainted with the
operation of the instrument prior to any attempt to service it.
Due to the complexity of the 1409 the service and repair is only possible
on module level and only a few individual components are made available for
field service.
Handling of the electronic parts must be done with proper ESD equipment to
avoid any possibility of an electrostatic discharge to the components. Modules
returned to LumaSense Technologies A/S for repair/credit will be discarded if
not properly packed in ESD material.
1.2 Introduction to the 1409
1.2.1 The Sampler System
The pneumatic system of the 1409 is shown schematically in
. The sampler system is
constructed of stainless steel (AISI 316) to minimize adsorption of samples.The 1409 is
delivered with 6, 12, or 24 channels. All inlet channels are with a solenoid valve. Each inlet
channel has a tube-mounting stub on the back-plate of the 1409 to connect each channel to
the respective sampling point. The inlet channels converge into one; a three-way valve then
directs the gas sample to the Gas Monitor for analysis, or through the waste-air outlet on the
1409’s back-plate.
An external pump (optional) can be connected in the airway system to the waste air outlet.
The 1409’s sampler system functions efficiently, transporting gas samples from the sampling
point at approximately 4 metres per second. However, this speed depends on the type of
pump, the diameter of the tubing and the length of tubing attached to the 1409. An air-filter is
attached to the end of each sampling tube to keep the samples free of particles.
