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Introduction
These installation and user instructions cover all variants in the Sangamo S250 &
Q550 series – a range of reliable and highly accurate 24-hour time switches which offer,
according to model, up to 3 ON/OFF (6 changeover) operations during a 24-hour cycle,
in versions which provide features such as selective omission of ON or OFF switching
operations, early operation, and with the solar dial versions, ON/OFF switching which
tracks sunrise and sunset.
The S250 & Q550 switches are controlled by an electronic quartz module with both
ensuring accurate time-keeping. The Q550 module has a back-up battery providing
a 100-hour reserve in the event of a power failure. With the easily-read dial face marked
in 15-minute divisions, these switches also offer high timing resolution, permitting
power to be switched on for periods as short as 15 minutes, to an accuracy
of ± 3 minutes.
Sangamo switches are straightforward to install and set, but please read these
instructions carefully first. As all variants in the ranges are covered by this leaflet,
there will be references to features not found on certain models, any such information
can be ignored.
Warning
This control must be earthed. Terminals are for fixed wiring only. Provision must be
made in the fixed wiring for a means of disconnection from the supply having a
contact separation of at least 3mm on all poles.
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