5
5.5 Low Water Protection
Low water cut out switches are fitted to the
suction manifold and have a range of 0-250
mBar (not on T260 models) . This must be set on
commissioning. (Fig 4)
1. Rotate Notched wheel clockwise until tight to
obtain minimum differential.
2. Set Switch to required operating point.
3. Rotate notched wheel anti-clockwise until
required until required differential is obtained ¼
turn of the notched wheel will give a change in
differential of approximately 10% of the range of
the switch.
4. During differential adjustment, the operating
point may vary slightly but can be reset by use of
the adjusting nut.
When the low water switch triggers there will be a
programmable delay (factory set 15s) before the
booster switches off. See menu 1.2.5.4
For T260 versions a float switch is installed in the
tank and factory set. This must be checked for
correct operation during commissioning
WARNING! Failure to set the low water cut
out switch correctly can cause air to enter the
system and damage the pumps
5.6 Operation
SCe booster is designed for ease of use. All drives
(motor and panel mounted) are factory set and do
not require any additional programming. All control
panel settings are set for factory performance and
may need altering during commission to specific
installation conditions. This should be done in
conjunction with the Wilo-control- SC-booster
operator manual
The following settings must be set to site
conditions. Failure to do so could result in
dangerous conditions
Check correct settings are in the controller
oSystem pressure set point 1.2.1.1
oDry Run protection delay 1.2.5.4
oPipe fill timer 5.8.3.0 (factory set at 300 seconds)
oPipe fill speed 5.8.4.0 (factory set at 60%)
oTurn pumps on 3.1.0.0
WARNING! Changes made to the drives may
hamper performance or cause damage to the
pumps
6 Commissioning & Maintenance
6.1 Commissioning
We recommend that the equipment is
commissioned by qualified personnel only. Please
contact Wilo UK service for commissioning request
[email protected]
Prior to placing the equipment into service the unit
must be installed with a correctly sized electrical
capability and meets the local requirements for
electrical installation. We recommend the unit is
installed on a permanent power supply.
The hydraulic system the cold water booster set
feeds must be complete with no open ends and is
suitably sized for the demand of the system.
Ensure all inlet valves are open and that the cold
water storage tank(s) are full of water. Vent all air
from the pumps via the vent plugs located on the
pumps. Enter system parameters and place unit
into operation.
Check operation of booster set meets the system
requirements.
DANGER! Risk of fatal injury! Tighten all
connection terminals prior to commissioning!
6.2 Maintenance
To guarantee maximum reliability in operation at
the lowest possible operating cost, we recommend
that the cold water booster set is subject to an
annual maintenance schedule. It is advisable
to enter into a maintenance agreement with
a specialist company or with Wilo UK service
department. Checks should be made on the
condition of the expansion vessel(s) and operating
condition of the pumps and valves. Checks should
be made on the operating parameters to ensure
that the unit is providing pressure that meets the
system requirements.
ATTENTION! Any maintenance must be
completed by a trained and competent person.
Any damage to the booster could void warranty
if this is not adhered to
Summary of Contents for 29992313
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