Manwal ta' Istruzzjoni tas-Swiċċ tal-Pressjoni ta' Kurrent Baxx Danfoss KP 35

1. Introduzzjoni

This manual provides essential information for the safe and effective installation, operation, and maintenance of the Danfoss KP 35 Low Current Pressure Switch. The KP 35 is designed for use in various applications including refrigeration, air conditioning, and general industrial systems, monitoring and controlling pressure within a specified range.

2. Informazzjoni dwar is-Sigurtà

TWISSIJA: Improper installation, operation, or maintenance can result in serious injury or equipment damage. Always follow these safety guidelines:

Ensure power supply is disconnected before installation or servicing.
L-installazzjoni u s-servizz għandhom isiru minn persunal kwalifikat biss.
Verify that the pressure switch specifications match the system requirements.
Teċċedix il-pressjoni jew it-temperatura massima nominali.
Protect the switch from physical damage and environmental extremes.

3. Prodott Aktarview

The Danfoss KP 35 pressure switch is a compact, robust control device featuring a single-pole double-throw (SPDT) contact system. It is designed for regulating, monitoring, and alarm systems in industrial applications. The switch is equipped with a pressure connection and electrical terminals for easy integration into control circuits.

Quddiem view of Danfoss KP 35 pressure switch showing range and differential scales

Figura 3.1: Quddiem view of the Danfoss KP 35 pressure switch, displaying the adjustable range and differential scales, along with the Danfoss logo and "INSTRUKART" branding.

Ġenb view of Danfoss KP 35 pressure switch showing pressure connection

Figura 3.2: Ġenb view of the Danfoss KP 35 pressure switch, highlighting the pressure connection port at the bottom and the electrical conduit entry on the side.

4. Speċifikazzjonijiet

Karatteristika	Dettall
Brand	Danfoss
Mudell	KP 35
Mod ta' Operazzjoni	Elettriku
Tip ta' Terminal	SPDT (Pol Uniku b'Dawra Doppja)
Klassifikazzjoni tal-Protezzjoni Internazzjonali	IP54
Speċifikazzjoni Met	CCC, CE, RoHS
Protokoll tal-Konnettività	X-10
Medda tal-Pressjoni	-0.2 sa 7.5 Bar
Firxa tat-Temperatura	-40 °F sa 149 °F (-40 °C sa 65 °C)
Daqs tal-Konnessjoni	1/2 pulzier

Danfoss KP 35 pressure switch with ruler for size reference

Figure 4.1: Danfoss KP 35 pressure switch shown alongside a ruler, providing a visual reference for its physical dimensions. Mounting screws and washers are also visible.

Technical drawing with dimensions of Danfoss KP 35 pressure switch

Figure 4.2: Technical drawing illustrating the dimensions of the Danfoss KP 35 pressure switch, including height, width, and depth, along with connection details.

5. Installazzjoni

5.1 Immuntar

Select a suitable location free from excessive vibration, moisture, and extreme temperatures.
Mount the switch using the provided mounting holes. Ensure it is securely fastened.
The switch can be mounted in any position, but vertical mounting with the pressure connection downwards is generally recommended to prevent accumulation of liquids in the pressure connection.

5.2 Konnessjoni tal-Pressjoni

Connect the pressure switch to the system's pressure line using the 1/2 inch connection.
Use appropriate sealing material (e.g., PTFE tape) to ensure a leak-free connection.
Avoid overtightening the connection to prevent damage to the switch or piping.

5.3 Wiring Elettriku

ATTENZJONI: Disconnect all power before performing electrical wiring.

Remove the cover of the switch to access the electrical terminals.
Connect the electrical wires according to the system's wiring diagram and local electrical codes. The KP 35 features SPDT contacts.
Kun żgur li l-konnessjonijiet kollha huma siguri u iżolati kif suppost.
Replace the cover securely after wiring.

Intern view of Danfoss KP 35 pressure switch showing electrical terminals

Figura 5.1: Intern view of the Danfoss KP 35 pressure switch with the cover removed, revealing the electrical terminals and contact mechanism. This view is crucial for wiring connections.

6. Twaqqif u Aġġustament

The KP 35 pressure switch allows for independent adjustment of the cut-in pressure (range) and the differential pressure.

Adjusting the Range (Cut-in Pressure): Use the larger adjustment screw or knob (typically marked "RANGE") to set the desired cut-in pressure. This is the pressure at which the switch will activate or deactivate.
Adjusting the Differential: Use the smaller adjustment screw or knob (typically marked "DIFF") to set the differential pressure. This is the difference between the cut-in and cut-out pressures. For example, if the range is set to 5 bar and the differential to 1 bar, the switch will cut in at 5 bar and cut out at 4 bar (for a decreasing pressure application).
Refer to the scales on the front of the switch for precise settings.
After adjustment, verify the settings by observing the system's pressure and the switch's operation.

7. Istruzzjonijiet Operattivi

Once installed and adjusted, the Danfoss KP 35 pressure switch operates automatically based on the system pressure. When the pressure reaches the set cut-in point, the SPDT contacts will switch position. When the pressure changes by the set differential, the contacts will switch back.

Monitor system pressure to ensure it remains within the safe operating limits of both the switch and the overall system.
Observe the electrical load connected to the switch to ensure it does not exceed the switch's rated capacity.

8. Manutenzjoni

The Danfoss KP 35 pressure switch is designed for long-term, reliable operation with minimal maintenance. However, periodic checks are recommended:

Spezzjoni Viżwali: Spezzjona s-swiċċ regolarment għal kwalunkwe sinjal ta' ħsara fiżika, korrużjoni, jew konnessjonijiet laxki.
Verifiki tat-Tnixxijiet: Periodically check the pressure connection for any leaks.
Test Funzjonali: If possible and safe, periodically test the switch's operation by simulating pressure changes to ensure it activates and deactivates at the set points.
Tindif: Żomm il-parti ta' barra tas-swiċċ nadifa u ħielsa mit-trab u l-fdalijiet. Tużax kimiċi ħarxa.

9 Issolvi l-problemi

Jekk is-swiċċ tal-pressjoni mhux qed jaħdem kif mistenni, ikkunsidra l-kwistjonijiet komuni li ġejjin:

Problema	Kawża Possibbli	Soluzzjoni
Switch does not activate/deactivate	Incorrect pressure settings; No power; Faulty wiring; Clogged pressure line; Internal switch failure.	Verify range and differential settings; Check power supply; Inspect wiring for loose connections or breaks; Clear pressure line; Replace switch if internal failure is suspected.
Operazzjoni inkonsistenti	Pressure fluctuations in the system; Vibration; Loose mounting.	Stabilize system pressure; Isolate switch from vibration; Securely fasten mounting.
Leak at pressure connection	Improper sealing; Damaged threads.	Re-apply sealing material (e.g., PTFE tape); Inspect threads for damage and repair or replace if necessary.

10. Garanzija u Appoġġ

For specific warranty information and technical support, please refer to the official Danfoss website or contact your authorized Danfoss distributor. Keep your purchase receipt for warranty claims.

Danfoss Uffiċjali Websit: www.danfoss.com

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Danfoss KP 35