5.
Check STS system inlet and outlet pressure gauges. Proper operating
parameters will result in an inlet pressure from approximately 17-20 psi (1.2-
1.4 bar) above the system flow pressure to the STS system and an outlet
pressure of 16-19 psi (1.1-1.3 bar) above the system pressure flow pressure
to the STS system.
If your system is a STS/SWP model that is being
used in conjunction with sweeper piping please see addition
information below.
6.
STS/SWP systems use a high head pump to provide higher pressure for
sweeper piping. These pumps range from 90’-100’ TDH. If your system is
equipped with one of these pumps, the proper operating parameters will
change from listed in Item 5 above. Your inlet pressure should be
approximately 35-38 psi (2.4-2.6 bar) and an outlet pressure of 33-36 psi
(2.2-2.5 bar) at the discharge connection.
Although the hydroboosters do
provide backpressure for the system, it is highly recommended that a valve
(ball or butterfly type) be installed on the outlet of the system to give
additional flow control when using an STS/SWP system
.
7.
BACKWASHING
Differential pressure across the filter media progressively increases as
trapped particulate accumulate in the filter media bed. On filter equipped with
automatic backwash, the backwash cycle is initiated upon reaching a 10
psig pressure differential. Since units with automatic controls perform this
function as necessary, a detailed backwash procedure is only provided for
manual units. However, automatic units can be manually backwashed by
pressing the manual push-button switch located on the control panel. The
backwash cycle is field adjustable on most units and is factory set at three
minutes. To prevent unfiltered water from “short circuiting” through the media
and to extend media life, the filter should be backwashed regularly; at least
once every 24-48 hours.
8.
FOR NEGATIVE SUCTION (LIFT)
If the water level of the sump is lower than the centerline of the pump inlet, the
use of a self-priming pump might be necessary. Follow priming procedures
every time the pump is started. Consult the factory for systems requiring
suction lift.
9.
WINTERIZING
In areas subject to freezing winter temperatures, protect the pump when
not in use by removing both drain plugs (from the pump volute and from
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