Installation, Operation,
and Maintenance Manual
PSE-800-M Low Water
Cut-off
Table of Contents
Introduction and Safety..................................................................................................................2
Introduction..................................................................................................................................2
Safety.............................................................................................................................................2
Safety terminology and symbols........................................................................................... 2
User safety.................................................................................................................................... 3
Product warranty......................................................................................................................... 4
Product Description........................................................................................................................5
General description.................................................................................................................... 5
Operational specifications......................................................................................................... 5
Electrical specifications...............................................................................................................6
Installation........................................................................................................................................7
Determine location for the probe installation......................................................................... 7
Install the probe...........................................................................................................................7
Install the control housing..........................................................................................................8
Wire the probe to the control housing.....................................................................................8
Control to boiler wiring.............................................................................................................. 9
Electrical conduit connections...................................................................................................9
Wire connections to the terminal block....................................................................................9
Option A wiring........................................................................................................................... 9
Option B wiring......................................................................................................................... 10
Option C wiring.........................................................................................................................11
Table of Contents
Commissioning, Startup, Operation, and Shutdown...............................................................12
Start up the boiler..................................................................................................................... 12
Test the probe........................................................................................................................... 12
Test the manual reset button...................................................................................................12
Maintenance..................................................................................................................................13
Maintenance schedule............................................................................................................. 13
Troubleshooting........................................................................................................................... 14
Probe fails to operate............................................................................................................... 14
PSE-800-M Low Water Cut-off Installation, Operation, and Maintenance Manual 1
Introduction and Safety
Introduction and Safety
Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
• Installation
• Operation
• Maintenance
CAUTION:
Read this manual carefully before installing and using the product. Improper use of the
product can cause personal injury and damage to property, and may void the warranty.
NOTICE:
Save this manual for future reference, and keep it readily available at the location of the
unit.
Safety
WARNING:
• The operator must be aware of safety precautions to prevent physical injury.
• Operating, installing, or maintaining the unit in any way that is not covered in this
manual could cause death, serious personal injury, or damage to the equipment. This
includes any modification to the equipment or use of parts not provided by Xylem. If
there is a question regarding the intended use of the equipment, please contact a
Xylem representative before proceeding.
• Do not change the service application without the approval of an authorized Xylem
representative.
CAUTION:
You must observe the instructions contained in this manual. Failure to do so could result
in physical injury, damage, or delays.
Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety messages and
regulations carefully before handling the product. They are published to help prevent
these hazards:
• Personal accidents and health problems
• Damage to the product
• Product malfunction
2 PSE-800-M Low Water Cut-off Installation, Operation, and Maintenance Manual
Hazard levels
Hazard level Indication
DANGER:
A hazardous situation which, if not avoided, will result in
death or serious injury
Introduction and Safety
Hazard categories
WARNING:
CAUTION:
NOTICE:
Hazard categories can either fall under hazard levels or let specific symbols replace the
ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
Electrical Hazard:
These are examples of other categories that can occur. They fall under the ordinary
hazard levels and may use complementing symbols:
• Crush hazard
• Cutting hazard
• Arc flash hazard
A hazardous situation which, if not avoided, could result
in death or serious injury
A hazardous situation which, if not avoided, could result
in minor or moderate injury
• A potential situation which, if not avoided, could
result in undesirable conditions
• A practice not related to personal injury
User safety
General safety rules
These safety rules apply:
• Always keep the work area clean.
• Pay attention to the risks presented by gas and vapors in the work area.
• Avoid all electrical dangers. Pay attention to the risks of electric shock or arc flash
hazards.
• Always bear in mind the risk of drowning, electrical accidents, and burn injuries.
Safety equipment
Use safety equipment according to the company regulations. Use this safety equipment
within the work area:
• Hard hat
• Safety goggles, preferably with side shields
• Protective shoes
• Protective gloves
• Gas mask
PSE-800-M Low Water Cut-off Installation, Operation, and Maintenance Manual 3
Introduction and Safety
• Hearing protection
• First-aid kit
• Safety devices
NOTICE:
Never operate a unit unless safety devices are installed. Also see specific information
about safety devices in other chapters of this manual.
Electrical connections
Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local regulations. For more information about
requirements, see sections dealing specifically with electrical connections.
Product warranty
Coverage
Xylem undertakes to remedy defects in products from Xylem under these conditions:
• The faults are due to defects in design, materials, or workmanship.
• The faults are reported to a local sales and service representative within the warranty
period.
• The product is used only under the conditions that are described in this manual.
• The monitoring equipment that is incorporated in the product is correctly connected
and in use.
• All service and repair work that is done by Xylem authorized personnel.
• Genuine Xylem parts are used.
• Only Ex-approved spare parts and accessories that are authorized by an Ex-approved
Xylem representative are used in Ex-approved products.
Limitations
Warranty claim
The warranty does not cover defects that are caused by these situations:
Deficient maintenance
•
• Improper installation
• Modifications or changes to the product and installation that are made without
consulting a Xylem authorized representative
• Incorrectly executed repair work
• Normal wear and tear
Xylem assumes no liability for these situations:
• Bodily injuries
• Material damages
• Economic losses
Xylem products are high-quality products with expected reliable operation and long life.
However, should the need for a warranty claim arise, contact your local sales and service
representative.
4 PSE-800-M Low Water Cut-off Installation, Operation, and Maintenance Manual
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