ANALOG BOILER
CONTROLLER
MODEL ABC 50
INSTALLATION
OPERATION
MAINTENANCE
INSTRUCTION
®
$5.00 USA $6.25 CANADA
©1997 Pulsafeeder
72-500-06
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ABC™ FACTORY SERVICE POLICY
Your ABC™ controller is a state of the art electronic based unit with on-board diagnostics. If you are experiencing a problem with your ABC™ controller, first consult
the troubleshooting guide in your operation and maintenance manual. If the problem is not covered or cannot be solved, please contact our Technical Services
Department for further assistance. Trained technicians are available to diagnose
your problem and arrange a solution. Solutions may include purchase of replacement parts or returning unit to the factory for inspection and repair. All returns
require a Return Authorization number to be issued by Pulsafeeder. Parts purchased
to correct a warranty issue may be credited after an examination of original parts by
Pulsafeeder. Warranty parts returned as defective which test good will be sent back
freight collect. No credit will be issued on any replacement electronic parts.
Any modifications or out-of-warranty repairs will be subject to bench fees and costs
associated with replacement parts.
ABC™ WARRANTY
Pulsafeeder, Inc. warrants ABC™ control systems of its manufacture to be free of
defects in material or workmanship. Liability under this policy extends for 24
months from date of shipment. The manufacturer's liability is limited to repair or
replacement of any failed equipment or part which is proven defective in material or
workmanship upon manufacturer's examination. This warranty does not include
removal or installation costs and in no event shall the manufacturer's liability
exceed the selling price of such equipment or part. The manufacturer disclaims all
liability for damage to its products through improper installation, maintenance, use,
or attempts to operate such products beyond their functional capacity, intentionally
or otherwise, or any unauthorized repair. The manufacturer is not responsible for
consequential or other damages, injuries, or expense incurred through the use of its
products.
The above warranty is in lieu of any other warranty, whether expressed or implied.
The manufacturer makes no warranty of fitness or merchantability. No agent of
ours is authorized to provide any warranty other than the above.
CONTENTS
1. INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . 3
2. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4. ELECTRODE REMOVAL, CLEANING AND REINSTALLATION . . . . . 11
5. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . 12
6. TROUBLE SHOOTING GUIDE . . . . . . . . . . . . . . . . . . 13
7. ASSEMBLY DIAGRAMS AND PARTS LISTS. . . . . . . . . . . . 14
8. ABC SERIES LINE UP AND OPTIONS . . . . . . . . . . . . . . 16
1. INTRODUCTION
The Pulsafeeder ABC Controllers are used to control total dissolved solids
(TDS) in steam boiler systems, in terms of electrical conductivity measured in
microsiemens per cm (µS/cm). They are designed using the latest technology
with plug-in circuit boards.
The units are very accurate and easy to use. This simplified design provides
automated control at an economic cost.
The ABC Series comes standard with connections for AC power and blow
down activation.
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ANALOG BOILER CONTROLLER
MODEL ABC 50
®
A. LOCATION:
The ABC Series Controllers are designed for ease of installation. Select a
mounting location convenient to electrical and plumbing connections and easily
accessible by the operator for cleaning and maintenance.
The enclosure is corrosion resistant and will stand up to most industrial environments. Be sure unit is free from vapors and liquid spills (Refer to Fig. 1,
Typical Installation Diagram). Installation should comply with all national,
state and local codes.
2. INSTALLATION
Fig. 1, Typical Installation Diagram
ABC
ABC
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B. MOUNTING:
Mount Controller vertically on a wall or a permanent
vertical support with adequate lighting and at a comfort-
able level (Refer to Fig. 2, Controller Dimensions).
C. ACCESSORIES:
(Available through your Pulsafeeder distributor or sales
representative, but not included as standard)
Boiler Conductivity Timed Sample:
1. Blowdown valve, solenoid and strainer or motor oper-
ated ball valve.
2. Needle valve or orifice union and plates for throttling
blowdown.
3. A full-port gate valve for isolation of blowdown
assembly.
4. A flush valve for sensor.
Boiler Conductivity Continuous Sample:
1. Blow down valve, solenoid and strainer or motor
operated ball valve.
2. Two needle valves or two orifice unions and plates for throttling blowdown.
3. A full-port gate valve for isolation of blowdown assembly.
4. A flush valve for sensor.
D. PLUMBING:
A flow rate of at least 1-3 gpm (gallons per minute)
at the electrode is required for proper operation.
Install hand valves on both sides of electrode for easy removal and periodic
maintenance.
Direction of flow should be in line with the arrow on probe assembly. Take
time to review Fig. 1, Typical Installation Diagram, and note locations of hand
valves, etc. for proper operation and maintenance of all components in the system loop. The throttling valve must be adjusted so that water flows across the
probe, not steam.
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Fig. 2, Controller Dimensions
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