RKI Instruments 35-3001-NS-03 Operator's Manual

35-3001-NS-03

Sample Draw Pump

Operator’s Manual

Part Number: 71-0472
Revision: P1
Released: 11/16/18

www.rkiinstruments.com

Product Warranty

RKI Instruments, Inc. warrants gas alarm equipment sold by us to be free from defects in materials,
workmanship, and performance for a period of one year from date of shipment from RKI
Instruments, Inc. Any parts found defective within that period will be repaired or replaced, at our
option, free of charge. This warranty does not apply to those items which by their nature are subject
to deterioration or consumption in normal service, and which must be cleaned, repaired, or replaced
on a routine basis. Examples of such items are:

Warranty is voided by abuse including mechanical damage, alteration, rough handling, or repair
procedures not in accordance with the operator’s manual. This warranty indicates the full extent of
our liability, and we are not responsible for removal or replacement costs, local repair costs,
transportation costs, or contingent expenses incurred without our prior approval.

THIS W ARRAN T Y IS EXPRESSLY IN LIEU OF ANY AND ALL OTHER
WARRANTIES AND REPRESENTATIONS, EXPRESSED OR IMPLIED, AND
ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF RKI
INSTRUMENTS, INC. INCLUDING BUT N OT LIMITED TO, THE WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN
NO EVENT SHALL RKI INSTRUMENTS, INC. BE LIABLE FOR INDIRECT,
INCIDENTAL, OR CONSEQUENTIAL LOSS OR DAMAGE OF ANY KIND
CONNECTED WITH THE USE OF ITS PRODUCTS OR FAILURE OF ITS
PRODUCTS TO FUNCTION OR OPERATE PROPERLY.

a) Absorbent cartridges d) Batteries

b) Pump diaphragms and valves e) Filter elements

c) Fuses

This warranty covers instruments and parts sold to users by authorized distributors, dealers, and
representatives as appointed by RKI Instruments, Inc.

We do not assume indemnification for any accident or damage caused by the operation of this gas
monitor, and our warranty is limited to the replacement of parts or our complete goods.

35-3001-NS-03 Sample-Draw Pump

Table of Contents

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

External Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Internal Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Mounting the Sample-Draw Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connecting the Sample Lines to the Sample-Draw Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Wiring the Sample-Draw Pump to a Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Introducing Incoming Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Low Flow Contact Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Replacing Components of the Sample-Draw Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Adjusting the Low Flow Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

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 sample­draw 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.

Input Power 24 VDC Nominal (18.5 VDC - 30 VDC)

Table 1: Specifications

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)

Maximum Recommended Inlet/
Exhaust Line Length for
1/4” O.D. x 1/8” I.D. Tubing

Maximum Recommended Inlet/
Exhaust Line Length for
1/4” O.D. x 0.170” I.D. Tubing

Vo l t a g e

125 VAC 0.6 A

30 VDC 1 A

110 VDC 0.6 A

Inlet

30 feet 0 feet

15 feet 15 feet

Inlet

30 feet 30 feet

Amps

Exhaust

Exhaust

WARNING: When using the 35-3001-NS-03, you must follow the instructions and warnings

4 • 35-3001-NS-03 Sample-Draw Pump

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.

Description

Pump C onnector

Pump

_

O
X
Y
G
E
N

B

+

W

Flow Baffle

OXY

+

S

AM P 2

+

+

AM P

S

Sensor Flow

Control Valve

Fail LED

Pilot L ED

Interconnect
Terminal
Strip

Pump Reset

Switch

Flowmeter

Pressure Switch

Adjustment Screw

(behind PCB)

OXY

GW

+

3/4"Conduit Hub

AM P 2AM P 1

S

Particle Filter

Flowmeter Circuit

Board C onnector

LOW

FLOW

Exhaust

Fitting

Inlet

Fitting

LOW

FLOW

Mounting

Foot, 4X

EXHAUST

INLET

This section describes the components of the sample-draw pump.

Figure 1: Sample-Draw Pump Component Location

External Components

This section describes the sample-draw pump’s external components.

Housing

The sample-draw pump’s fiberglass housing is weather- and corrosion-resistant. It is suitable for
installation where general purpose equipment is in use.

35-3001-NS-03 Sample-Draw Pum p • 5