7
PUMP START-UP TEST
1. At this point, the pump start-up vacuum level for the system needs to be
determined. Close the SVRS vent by pushing down on the reset lever.
Use the vacuum gauge on the installed SVRS unit to read the pump start-up
vacuum level in the main drain line.
The peak start-up vacuum level should be
read with full prime on the pump, all air bled from the filter system, at
maximum return rate of flow, and with all suction flow directed from the
main drain.
This condition will typically produce the peak vacuum level that the
SVRS will be exposed to during pump start-up.
Set valves and equipment to
the above conditions, and…
¾
Turn on the pump. Observe the SVRS response. Make sure to notice the
peak vacuum level on the SVRS vacuum gauge. If the peak vacuum level
exceeds 10” Hg, the SVRS will require adjustment (See Item 2. below).
The Vac-Alert
TM
SVRS unit is designed for systems that operate at vacuum
levels less than 15” Hg. Do not install a Vac-Alert
TM
SVRS unit on any
system that operates at a vacuum level above 15” Hg. See Initial System
Preparation for options on how to lower system operating vacuum level.
2.
NOTE
: Each SVRS comes factory set to remain closed (non-venting) for
vacuum levels up to 10” Hg.
¾
If the pump start-up test indicates a vacuum level above 10” Hg, the SVRS
will either leak air into the system momentarily, and then re-seal, or the
SVRS may lock open in the venting position. Given a start-up vacuum in
excess of 10” Hg, or the SVRS is allowing too much air to leak into the
system, the SVRS will need adjustment for site-specific vacuum levels.
¾
If the pump start-up test indicates a vacuum level of less than 10” Hg,
and the SVRS is not leaking air into the system, the SVRS should
not need any further adjustment.
SVRS ADJUSTMENT
The SVRS is field adjustable for vacuum levels from 0” Hg to 15” Hg. As previously
stated each unit is shipped from the factory set at about 10” Hg.
To adjust the
Vac-Alert
TM
unit for site-specific vacuum conditions proceed as follows:
1.
NOTE
-Before making any adjustment to the SVRS spring compression screw,
make sure the pump is turned off and the Vac-Alert
TM
unit is in the open (venting)
position. The SVRS can be placed in the open position from the vent end (gray
end) by utilizing a screwdriver. Remove the vent screen and place the screwdriver
