Global Water WS700R Instruction Manual

Global Water

800-876-1172 • globalw.com

WS700R Refrigerated Wastewater Sampler

Global Water

Instrumentation, Inc.

11390 Amalgam Way

Gold River, CA 95670

T: 800-876-1172

Int’l: [phone], F: [phone]

globalw.com

01-533 07/28/06

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Global Water

800-876-1172 • globalw.com

Table of Contents

I. WS700R Checklist • • • • 3
II. Inspection • • • • • • 3
III. Description • • • • • • 4
IV. Installing the Water Sampler • • • • 5
V. The Control Panel • • • • • 6
VI. The Refrigerator • • • • • 8
VII. Composite Sampling • • • • • 8
VIII. Discrete Sampling

• • • • • 9
IX. External Trigger mode • • • • • 9
X. Specifications • • • • • • 11
XI. Maintenance • • • • • • 12
XII. Troubleshooting • • • • • • 13
XIII. Warranty • • • • • • • 14
XIV. Appendix A: Sample Size vs. Head Height • • 15

XV. Appendix B: Battery Life • • • • 16
XVI. Appendix C: Input and Output Connection • • 16
XVII. Appendix D: Accessories • • • • 17

* Copyright © Global Water Instr umentation, Inc. 2006

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Global Water

800-876-1172 • globalw.com

Congratulations on your purchase of the Global Water WS700R Refrigerated
Wastewater Sampler. This instrument has been quality tested and approved
for accurate and reliable operation. We are confident that you will find the
WS700R to be a valuable asset for your applications. Should you require
assistance, our technical staff will be happy to help.

I. WS700R Checklist

a. WS700R Wastewater Sampler Controller
b. 12V Battery (Inside sampler housing)
c. Battery Charger
d. Two Shorting Plugs
e. WS700R Manual
f. Refrigerator
g. Sample Bottle (inside refrigerator)
h. RCA to RCA float switch lead

II. Inspection

The WS700R unit was carefully inspected and certified by Global Water’s Quality
Assurance Team before shipping. If any damage has occurred during shipping,
please notify Global Water Instrumentation, Inc. and file a claim with the carrier
involved.

Use the checklist to ensure that everything needed to operate the WS700R was
received.

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III. Description

The Global Water WS700R Sampler is designed specifically to meet a wide
variety of sampling requirements where refrigeration is required; including
industrial discharge, process control, water and wastewater treatment plants,
sewers, rivers and streams.

The WS700R Sampler can take individual “time weighted” composite samples, or
it can be set to take a full-bottle discrete or “Grab” sample. This is accomplished
with a Sample Size control having one position being reserved for “Full” bottle. A
Sample Interval control sets the time between individual composite samples and
has a provision for allowing the sampler to be triggered from external sources.

A Start Delay timer can be set to start sampling after a preset time. This allows
multiple samplers to be deployed in the field and have them turn on at the same
time. The delay can also be used to hold off sampling to let the water source
flush out debris or other contaminants.

After each sample, the pump will reverse for 15 seconds. This clears any debris
from the strainer at the end of the pickup hose and also empties water from the
hose so the next sample is not contaminated by the previous one.

Inputs are provided for triggering the sampler based on water level, a rain gauge
sensor or a signal from an external process controller or other monitoring device.
An output is also available for monitoring when the pump is taking samples, using
a data logger or similar recording device.

The WS700R Sampler is easily set up near industrial discharges or streams. It
can also be suspended in a manhole for sewer flow sampling. The sampler
consists of a rugged, rainproof and lockable carrying enclosure. The enclosure
houses a peristaltic sampling pump, sample bottle, a control panel, and a
rechargeable battery. A battery charger and sample pickup hoses are also
provided.

Global Water

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Global Water

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IV. Installing the Water Sampler

Refrigerator

a. The refrigerator is designed for freestanding installation only. It should not be

recessed or built in. Install the refrigerator on a base strong enough to
support it when fully loaded. Allow air to circulate freely around the
refrigerator. Provide a 1” clearance around the unit for proper circulation.

b. In the event of an electrical short circuit, grounding reduces the risk of electric

shock by providing an escape wire for the electric current. This appliance is
equipped with a cord having a grounding wire with a grounding plug. Do not
cut or remove the third (ground) prong from the power cord. Plug the
refrigerator cord into a wall outlet to start the cooling cycle. Set the
temperature knob to 4.

c. Never put food or beverages into the refrigerated wastewater sampler, it may

become contaminated.

Sampler

a. The control panel should be placed upright.
b. To secure the sample bottle:

1) Screw the bottle caps/float switch onto the sample bottle

2) Place bottle into the refrigerator

3) Plug the float switch into the jack located on the inside at t he
top left

4) Insert the sampler hose into the hole in the lid

c. Fasten the pump control panel enclosure down to the refrigerator by peeling

off the back from the adhesive fasteners. Press the control panel enclosure
firmly down so that it is not easily knocked loose.

d. Connect the depositing end of the pump hose to fitting at the top of the

refrigerator.

e. Plug the float switch lead between the bottle switch jack on the front of the

control panel and the jack at the top of the refrigerator.

f. Plug the AC power supply plug into the jack on the front of the control panel

and plug the power supply into the wall outlet. Unplug the power supply when
not in use.

g. The unit is water resistant, not water proof. The unit must be located well

above the water level to continue to provide reliable service.

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V. The Control Panel

1. Pump.

2. Start Delay:
time. If no delay is desired, set the control to zero. Only the first
sample taken by the pump is delayed, except as described later in
the section titled “External Trigger Mode”.

3. Sample Interval:
The “External Trigger” position is reserved for using the Trigger and
Rain Sensor inputs to initiate sampling as described later in the
section titled “External Trigger Mode”.

4. Sam ple Size:
sample size settings are approximate and apply to a head height of
four feet. The switch position marked “Full” causes the pump to work
as a discrete sampler, filling the bottle full in one sample. Note: In
the Full position, the sampler will shut off the pump after one hour,
even if the bottle is not full.

5. Trigger In:
selected by the Sample Interval control. A signal from an external
device will cause a single sample to be taken according to the Size
control. The External Trigger mode is described in more detail later
in the section titled “External Trigger Mode”. Refer to the
Specifications section for details about the input pulse requirements.

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This setting delays sampling by a preset amount of

Sets the time interval between composite samples.

Sets the size for a single composite sample. The

This input works in “External Trigger” mode only, as

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