RKI Instruments RP-6 User Manual

RP-6 Pump for the GX-94

Operator’s Manual

Part Number: 71-0076RK
Revision: 0
Released: 11/4/02

RKI Instruments, Inc. 33248 Central Ave. Union City, CA 94544

Phone: [phone] Fax: [phone]

Product W arranty

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:

a) Absorbent cartridges d) Batteries

b) Pump diaphragms and valves e) Filter elements

c) Fuses

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 WARRANTY 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 NOT 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.

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.

• 2 RP-6 Pump for the GX-94

Table of Contents

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

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

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

Pump Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Coiled Hose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Sample Adapter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Rubber Sample Nipple. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Optional Hose & Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Normal Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Low Flow Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Replacing the Cotton Dust Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Replacing the Hydrophobic Disk Filter and Wire Mesh Disk . . . . . . 12

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

WARNING: Understand manual before operating and for proper

battery type. Substitution of components may impair
intrinsic safety. To prevent ignition of a hazardous
atmosphere, batteries must only be changed in an area
known to be nonhazardous. Not tested in oxygen
enriched atmospheres (above 21%).

RP-6 Pump for the GX-94 • 3

Overview

This manual describes the RP-6 Pump. This manual also
describes how to operate the RP-6 with the Model GX-94 and
maintain the RP-6. A parts list at the end of this manual lists
replacement parts and accessories for the RP-6.

Specifications

Table 1 lists specifications for the RP-6 Pump.

Table 1: Specifications

Power Supply 1 ea. AA size alkaline
Operating Time 5 hours minimum at 20°C
Operating

Temperature &
Humidity

Dimensions 33 (D) x 34 (W) x 134 (H) mm, tapered nozzle not

Weight Approximately 150 g (including alkaline battery)
Sample Flow Rate 0.5 LPM (liters per minute)
Alarm Indications Low Flow & Low Battery
Safety/Regulatory

-10°C to +40°C, 0 - 80% Relative Humidity (non­condensing)

included

C US

186718

CSA classified, “C/US”, as Intrinsically Safe. Exia.

Class I, Groups A, B, C, &D. Class I, Zone 0.

Temperature Code T4C.

RP-6 Pump for the GX-94 • 4

Description

The RP-6 Pump is a sample drawing accessory for the RKI
Instruments Inc. Model GX-94 Gas Monitor. It consists of the
pump unit, the GX-94 sample adapter, the coiled hose, and the
rubber sample nipple.

Coiled Hose

Exhaust Fitting

Power LED

Low Flow LED

Battery Cap

Thumbscrew

Sample Adapter

Filter Holder

Inlet Fitting
(GX-7 Type)

Pump Unit

Rubber Sample

Nipple

On/OffSwitch

Figure 1: RP-6 Pump Component Location

Pump Unit

The pump unit is housed in a red plastic case. A GX-7 type male
quick connect fitting is located on one end of the pump unit.
This is the inlet fitting to the pump unit. The GX-7 quick connect
is installed in a removable clear plastic filter holder. A cotton
dust filter is inside the filter holder. The filter holder may be

RP-6 Pump for the GX-94 • 5