6
Switch Installation
Mounting
1. Mount the SR-500 in a suitable location within 8 feet of the pump.
2. Before mounting, remove SR-500 from its plastic enclosure by depressing tab
in upper left and pulling top portion of SR-500. Slide SR-500 out from the top.
At this point, record the serial number of your SR-500 on the warranty card.
3. Mount plastic enclosure using screws & anchors provided.
4. Install the hose fitting provided in the 1/2” inner
knockout below the vacuum
sensor. (Refer to Fig.2)
5. Re-install SR-500 into plastic enclosure. Slide the bottom of SR-500 into box;
then press upper portion until SR-500 snaps into place.
6. NOTE: Top portion of hose must be mounted onto vacuum sensor prior to
connecting lower end to pump trap. DO NOT connect the hose to the pump
until after successfully zeroing the sensor in service mode. The sensor must
be open to atmosphere to zero properly.
7. Feed the vacuum hose through the hose fitting and connect to the vacuum
sensor. Insure hose is snug onto vacuum sensor. Tighten the hose fitting
securely to provide strain relief for the hose. Attach hose clamp (included) for
additional strain relief (Refer to Fig.2.A). The vacuum hose MUST
exit the box
straight down without bends or kinks.
8. When routing the hose take care to avoid high-traffic areas where the hose can
be stepped on or tripped over. Zip-tying the hose to the pump electric conduit is
a good option. Excess hose can be trimmed, but under no circumstances shall
the existing hose be lengthened or a longer hose be used. Protect hose in
freezing conditions by wrapping with heat tape. If the pump is operated in an
area where the ambient air temperature can fall below 32˚F, the hose must be
protected from freezing by wrapping with heat tape.
9. Remove drain plug from pump trap. Install in its place the flare adapter, using
Teflon tape (not included) to ensure a good seal.
10. Attach the free end of the hose to the flare adapter and tighten.
11. If no pump drain plug exists, plumb in a tee with a 1/4” FPT reducer bushing.
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