(d) Tag and disconnect the lines on the multimedia filter control valve (fig. 2-15) and
backwash timer pilot valve and allow lines to dry. After draining the lines, reconnect them to valves as tagged.
(3) Drain booster pump:
(a) Run BOOSTER PUMP for no more than 5 seconds (fig. 2-55).
(b) Set switch to STOP.
(c) Repeat the last two steps until no more water comes from cartridge filter drain
(4) Drain chemical feed pumps as described below:
Chemicals can cause sickness or death if extreme care is not taken. Wear
protective devices when working with these solutions.
To avoid staining, be careful not to spill any solution on clothes or equipment. If
any solution is spilled, it should be washed away immediately with water.
(a) Empty and rinse all chemical containers and fill them with brine water.
(b) Set chemical pump valves to PRIME (fig. 2-60).
(c) Run pump motor to rinse chemical pumps. Set all control knobs (fig. 210) to maximum
(d) Remove intake tubing from all chemical containers.
(e) Allow pump to run (37, fig. 2-4) for 5 to 10 seconds to empty water from chemical
(f) Stop pump motor and empty chemical containers.
(g) Set chemical pumps valves to off position.
(h) Remove all tubing from pump and drain.
(5) Drain distribution pump and raw water pumps No. 1 and No. 2:
(a) Disconnect inlet and outlet hoses.
(b) Tip pump toward each connection to permit drainage.
(c) Open pump vent valve (fig. 2-40).
(d) Open pump drain valve (fig. 2-36).
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