Elkay 374C-1 Instruction Manual Download Page 4

Brook House,
Dunmurry Industrial Estate, 
Dunmurry, 
Belfast BT17 9HU
T +44 (0)28 9061 6505
F +44 (0)28 9061 6518
E [email protected]

elkay.co.uk

BROOK DESIGN HARDWARE LTD

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BROOK DESIGN 

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BROOK DESIGN 

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BROOK DESIGN 

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Problem

Resolution

Lights will not 

switch OFF

•  Check terminal connections.

•  Check timings.

•  PIR is too close to load – Re-position away from lighting, heating and forced air ventilation.

•  PIR is switching low wattage or LED loads – Fit Capacitor as stated in instructions PFCC-1.

•  PIR is re triggered – Check area is left unoccupied for longer that time setting using an accurate time piece.

Lights will not 

switch ON

•  Check Terminal connections.

•  Lux set too low – Turn UP lux level to the PLUS (+) setting and wait for 

    sensor to adjust.

Light switches 

OFF then 

immediately 

comes back ON

•  Check terminal connections.

•  PIR is detecting normally – Find source that is triggering PIR.

•  PIR is seeing infra red heat from the load- Re-position away from heat source (See Positioning).

•  PIR is switching low wattage or LED loads- Fit Capacitor PFCC-1 across switch live and

    neutral of load.

•  PIR is switching a contactor and the contactor chatters or stays ON - Fit a PFCC-1 capacitor 

    across the switch live and neutral of the contactor coil.

Troubleshooting

Operation of the Unit

•  

In standard operation the PIR will now 
sense infra red heat when a person  
or source of heat passes through  
the detection zone. Each time the PIR is 
triggered it will reset the timer back  
to the start of the timing period. The unit 
will then wait 5 seconds before allowing 
the PIR to sense and re trigger the  
timing period again.

•  

If no one is present in the room or the 
detection zone is not passed through, 
during its set time period, the timer  
will time out, turning off the lights  
or appliance.

•  

The PIR unit will only trigger the 

  lights or appliance if the ambient light  

level is below that set on the lux  
level adjustment.

Technical Helpline

For further help or assistance or information on this or other products in the range 

please call the Elkay Technical team on +44 (0)28 9061 6505. Please call the

Technical helpline before returning any products to your stockist. These instructions 

are available in other languages. Please refer to our website www.elkay.co.uk

Instrukcje są również dostępne w innych językach. Prosimy o zapoznanie się z naszą 

stroną internetową www.elkay.co.uk lub www.elkaypolska.pl
 

Important Notice

All wiring should be carried out by a competent 

person or a qualified electrician and should be 

fitted to current IEE wiring regulations BS 7671.

The circuit should be isolated before carrying out 

any work. Failure to adhere to the instructions 

will invalidate the warranty.

Elkay (Europe), 51C Milicka, Trzebnica, 55-100, Poland

Summary of Contents for 374C-1

Page 1: ...h off the load after the adjustable time period has elapsed If infra red heat is detected again during the timing period the timing sequence will restart The unit has a lux level adjustment which measures the ambient light levels and prevents lighting being switched on when there is sufficient lighting in the room A power factor correction capacitor of 4 microfarads may be required when switching ...

Page 2: ...or direct sunlight or in areas with high reflective surfaces Diagram 2 Do not site units on a vibrating surface or near forced air heating and ventilation They should not be placed within 1 metre of the load Sensors work when objects move across their field of view Position the sensor where people will be detected walking across the zones rather than towards the zones identified in Diagram 1 2 INS...

Page 3: ...ing fold the two arms up into the vertical position and insert unit into the hole Release unit ensuring arms are securely in place Step 4 Remove the fascia by turning anti clockwise to show the lux pot time delay pot switches Please adjust the Lux Level and time delay potentiometer gently without force as this is a sensitive electronic part After adjustment please wait 30 seconds for changes to ta...

Page 4: ...peration the PIR will now sense infra red heat when a person or source of heat passes through the detection zone Each time the PIR is triggered it will reset the timer back to the start of the timing period The unit will then wait 5 seconds before allowing the PIR to sense and re trigger the timing period again If no one is present in the room or the detection zone is not passed through during its...

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