Specifications

Analyzer 2825/2830/2835

Instruction 19-9320 5

2.4 Pump Operation

With the analyzer already switched ON, momentarily pressing the

button will start and stop the internal pump. The optional Extended

Probe Assembly with in-line lter (P/N 19-3310) can be connected to the

gas inlet tting (Figure 1, Item A) on the top of the analyzer for drawing

gas samples from hard-to-reach areas. If desired, a section of

/8" I.D.

tubing can be connected to the gas outlet tting (Figure 1, Item B) to

exhaust the gas being sampled to an outside area.

Note that the combined sampling hose and probe length should not

exceed 6 feet (1.8 m). Also note that the internal pump is intended for

use only at normal atmospheric pressure, and is not designed to draw

in gas samples against a vacuum or an obstruction such as a kink in the

sampling hose. If an obstruction or negative-pressure gradient is present,

then gas will not be drawn into the analyzer. Please consult the factory

for applications where longer sampling lengths are required, or where it

is necessary to draw against a vacuum.

2.5 Pump Contamination

Over time the pump can become contaminated, leading to a slower

response time and lower readings. To check for pump contamination,

turn the pump ON and hold your index nger over the inlet tting. The

pump should normally stall. If the pump, however, continues to run, then

the pump is contaminated and the analyzer needs to be returned to a

Bacharach Service Center for repair (refer to Section 4.2).