4 • 35-3001-NS-03 Sample-Draw Pump
Overview
This operator’s manual describes the 35-3001-NS-03 sample-draw pump. The sample-draw pump
has low flow contacts that allow the user to monitor the low flow status. This manual also describes
how to install, start up, and maintain the sample-draw pump. A parts list at the end of this manual
lists replacement parts and accessories for the sample-draw pump.
This sample-draw pump is intended to draw sample through a flow through adapter. The sample-
draw pump is intended to be downstream of the detector and was not designed to be used upstream
of a detector detecting reactive gases. The sample-draw pump should be used to draw sample
through a flow through adapter and should not be used to push sample through a flow through
adapter.
Specifications
Table 1 lists specifications for the sample-draw pump. See the detector head manual for
information specific to the detector head.
WARNING:
When using the 35-3001-NS-03, you must follow the instructions and warnings
in this manual to assure proper and safe operation of the 35-3001-NS-03 and to
minimize the risk of personal injury. Be sure to maintain and periodically
calibrate the 35-3001-NS-03 as described in this manual.
Table 1: Specifications
Input Power
24 VDC Nominal (18.5 VDC - 30 VDC)
Construction (housing)
Fiberglass/polyester (NEMA 4X)
Dimensions
8.5 in. H x 6.5 in. W x 4.25 in. D
Weight
4.5 lbs.
Flow Rate
• 3.0 SCFH recommended during operation
• 2.0 SCFH acceptable if tubing restriction from the
inlet and exhaust lines does not allow for 3.0 SCFH
Low Flow Setpoint
1.0 ± 0.1 SCFH
Low Flow Relay Contact Ratings
(resistive load)
Voltage
Amps
125 VAC
0.6 A
30 VDC
1 A
110 VDC
0.6 A
Maximum Recommended Inlet/
Exhaust Line Length for
1/4” O.D. x 1/8” I.D. Tubing
Inlet
Exhaust
30 feet
0 feet
15 feet
15 feet
Maximum Recommended Inlet/
Exhaust Line Length for
1/4” O.D. x 0.170” I.D. Tubing
Inlet
Exhaust
30 feet
30 feet
