3) The switch should be installed a minimum of 9” above the bottom of the
check valve when the float is in the down position.
Reclaim Tank Plumbing – Sewer Overflow:
1) The sewer (overflow) connection is above the normal liquid level and should
only overflow when washing cars.
2) The sewer connection should slope downward to the main sewer line.
3) There must be a backflow preventer installed between the Reclaim Tanks
and the main sewer line.
Reclaim Tank Plumbing – Interconnecting Piping:
1) The piping between the tanks will set the liquid level in each tank. The
elevation and downward elbow help prevent floating material and settled
solids from moving to the next tank.
2) The piping between compartments within each tank helps prevent floating
material and settled solids from moving to the next compartment.
3) For the PW100 / 200 / 300 series, the interconnecting piping needs to be a
minimum of 4”. For larger units, the piping is a minimum of 6”.
Reclaim Tank Plumbing – Recirculation Lines:
1) The 1” Recirculation Line continuously flows from the PurWater Reclaim Unit to
provide odor control. The line should go into the second compartment of the first
tank.
2) For ozone systems, the line terminates halfway below the liquid surface in a tee.
3) For sparger systems, the line terminates above the liquid level and is connected
to the air sparger.
Reclaim Tank Plumbing – Miscellaneous Items:
1) Piping and conduit materials should be PVC. PurWater recommends using
Schedule 80 pipe as it is stronger than Schedule 40.
2) All piping to / from the PurWater Reclaim Unit should be accessible from a
manway. Occasional checks and maintenance are required.
3) All floor drains emptying into the Reclaim Tanks should be piped to go below
the water level within the tanks. This prevents any gas from backing up
through the line into the bay or equipment room. This is especially important
on ozone systems.
4) The following should not be piped into the reclaim system: a) Domestic
sewer lines (sinks / toilets); b) Backwash from carbon tanks; c) Regeneration
from softeners; d) Blowdown from compressors or boilers; e) Drains from
Service / Detail Bays; and f) Areas where tire shine is applied.
5) If Self Serve Bays are to be piped into the Reclaim Tanks, a separate
Reclaim Tank should be used. Contact PurWater for details.
