4
056255661 (02-01-22)
DESCRIPTION
The SHEF50S and SHEF100S series pumps are designed for
effluent dosing, Septic Tank Effluent Pumping (S.T.E.P.) or
normal sump and general dewatering applications where higher
pressure is required.
When used in effluent dosing or S.T.E.P. applications, the pump
must be installed in a separate tank or compartment at the
discharger side of the septic tank.
Never install pump in tank
where sludge collects.
These pumps are available in single phase and three phase.
All phase units and all duplex installations must be used with a
control box. All power cords and seal leak detector cords are 20
feet long.
The SHEF50S model impeller is an enclosed two vane type to
handle ¾” spherical solids and are available made of engineered
thermoplastic. All pumps have a 2” NPT discharge tapping.
These pumps are NOT for use in swimming pools or fountains.
AIR LOCKING
A pump is said to be air locked if water traps air in the pump and
it cannot get out, thus preventing the pump from operating.
In installation of this type a 1/8” hole should be drilled in the
discharge pipe just above the pump discharge and a check valve
should be installed 12 to 18 inches above pump discharge. Do not
put check valve directly into pump discharge opening - follow
local code.
PACKAGING
Each pump is packaged separately in a carton marked with a
catalog number and the Hydromatic engineering number.
LEVEL CONTROLS
All pumps must use sealed level control switches for automatic
operation. MLC and MFLC controls have sealed switches that are
1 HP rated at 230 volts. Simplex single phase pumps can be made
automatic by attaching MFLC or MFS controls to the pump.
These switches have a fixed draw off level of 8 to 10 inches and
can be used up to 1 HP.
Plug-in cords can be used on all the single phase pumps. This
cord has a GROUND pin that plugs into a grounded receptacle.
The grounded receptacle cannot be used in the wet sump or
basin due to DANGER of current leakage. Sealed junction boxes
must be used in wet sumps or basins to make connections to
motor cord. The AWS-1 control also acts as a sealed junction box
for connecting power cord to pump cord.
DESIGN OF PRESSURE SEWER SYSTEMS
Hydromatic has available complete computer SOFTWARE for
designing PRESSURE SEWER SYSTEMS. This gives pipe sizes to
use and gives exact flow from any pump or group of pumps in the
system when operating simultaneously. This design DISK for IBM
or COMPATIBLE computers is available to engineers on request.
MOTOR TYPE
Motors are ¾ frame, 1/2 and 1HP single or three phase, 60 Hertz,
3450 R.P.M. with class B insulation. All single phase motors are
permanent split-capacitor (PSC) type with built-in on-winding
overload protection and do not require a start switch or start
relay. The three phase pump motors require a magnetic starter
with 3 leg overload protection. All motors have upper and lower
ball bearings and all are oil-cooled and lubricated.
Breathing hazard.
Basin or tank must be vented in
accordance with local plumbing codes. These pumps are not
designed for and CANNOT be installed in locations classified as
hazardous in accordance with NFPA 70.
Never enter pump chamber after sewage or effluent
has been in basin. Sewage water can give off methane,
hydrogen sulfide and other gases which are highly
poisonous.
Hydromatic recommends installing SHEF50S and SHEF100S
series effluent pumps with a quick removal system. The quick
removal system may be a union or quick-release coupling if the
pipe or discharge hose is within reach from the surface, or a
rail system type quick disconnect on deeper installations. See
installation drawings for suggested installation.
The dosing tank or pumping chamber must be constructed
of corrosion resistant materials and must be capable of
withstanding all anticipated internal and external loads. It also
must not allow infiltration or exfiltration. The tank must have
provisions for anti-buoyancy. Access holes or covers must be
of adequate size and be accessible from the surface to allow
for installation and maintenance of the system. Access covers
must be lockable or heavy enough to prevent easy access
by unauthorized personnel. The pumping chamber holding
capacity should be selected to allow for emergency conditions.
The discharge pipe must be the same size as the pump
discharge (2 inches) or larger. In order to insure sufficient fluid
velocity to prevent any residual solids from collecting in the
discharge pipe, it is recommended that a minimum flow of 2 feet
per second be maintained. (21 GPM through 2” pipe and 46 GPM
through 3” pipe). It is recommended that PVC or equal pipe is
used for corrosion resistance.
DESCRIPTION
