AL2 Power Supply for SITA Models 405-440 Systems up to 40w Lamps - Lamp Countdown with Alarms

AL2 Power Supply: For Sita 405–440 Systems (up to 40W), with Lamp Countdown

This is the genuine replacement power supply for Sita's AL2 domestic UV range — 405 to 440 systems up to 40W — supplied complete with the lamp lead. It adds a days-run indicator and an audible lamp-failure/end-of-life alarm over the basic AL power supply's simple LED indicator, and can also be used to upgrade a system currently running the standard AL control box.

Specifications

Important: check your sleeve bolt design before ordering

Older Sita AL systems have a smooth lamp connection that simply slides on. Newer systems use a locking sleeve bolt design, which this replacement power supply is built for — if your system has the older smooth connection, you'll also need to fit the newer locking sleeve bolt for this power supply to connect correctly. Check your existing connection before ordering, or see our additional product photos for a visual comparison.

Signs you need this part

• The days-run display has failed or is blank
• The audible alarm doesn't sound even when the lamp is overdue for replacement
• You currently have a standard AL control box and want to upgrade to lamp countdown monitoring

Why it matters

The AL2 power supply is what tells you when your lamp actually needs changing, rather than leaving you to guess or wait for a visible failure. Isolate power and water before replacing it, and confirm your sleeve bolt design matches before fitting.

How to fit it

1. Isolate power to the UV system before starting.
2. Confirm your sleeve bolt design matches this power supply (see note above).
3. Disconnect the lamp lead and remove the old power supply.
4. Fit the new power supply and reconnect the lamp lead.
5. Restore power and reset the countdown after fitting a new lamp.