Do you have a question about the Whale BE9003 and is the answer not in the manual?
Mount the switch vertically as shown in fig. 1 (wires located uppermost).
Use switch base (Fig. 1) or mounting ears (Fig. 2) as a template to mark pilot holes.
Follow the wiring diagram (Fig 3). Ensure proper circuit breaker and fuse rating.
Hold fingers on two raised circles on switch face to test pump activation.
Ensure the switch is clear of debris. Keep fuse and wiring connections high and dry.
Advise annual checking of plumbing system for leaks and obstructions.
Fully drain system for winterising to avoid product warranty invalidation.