The watering timer is clockwork and has proven to be a reliable device , used by ourselves for a number of years for unattended watering of a drip feed system.

It is important to protect it from frost in the winter. The plastic construction, although robust, will not tolerate frozen water, as any expansion will cause a crack. One of our units has the full force of sunlight and after 3 years is showing signs of slight fading of the control markings.

Treat it like a tap. Effectively it is a switch. If it is outside, the pipework to it will be under pressure and in bad conditions will freeze. Ideally it should be removed , but we just drain ours down as there is a stop valve before the water reaches the timer. Another sensible precaution is to ensure a clean water supply. Ours is from a tank, and on one occasion some debris managed to lodge itself , preventing the timer switching off , and drowning our plants!

A filter , similar to those found in washing machine inlets is ideal in this situation, but there should not be a problem with mains pressure.

To service the unit, simply remove the mounting screws , noting the position of the internal mechanism. On reassembly , check the body seal 'o' ring is undamaged as water ingress will seriously effect the internal mechanism. Use a sealant on it if there is any doubt, and don't overtighten the screws as they tap into the plastic case.

To be absolutely sure, mount the unit in a sheltered location and protect it from submersion.