ELGA CENTRA S200 US Operator's Manual page 37

ELGA
Regulating valve location
Step 7 - Distribution loop pressure adjustment
(R/S200 and R/S200HF only)
Pressure
regulating
valve
CAUTION!
WARNING!
To adjust the pressure in the distribution loop requires specialist
equipment and it is recommended that changes are made by an
ELGA LabWater Service Engineer.
Step 8 – Distribution loop pressure adjustment
(R/S200 US HFV/HFR only)
The pressure within the distribution loop is automatically
controlled by the unit and is set at a factory default of 3 bar
(typically) at the end of the distribution loop.
To adjust the pressure in the distribution loop requires specialist
equipment and it is recommended that changes are made by an
ELGA LabWater Service Engineer.
The sustaining valve ensures that during periods of high
demand all water is diverted to the point of use. During
recirculation the valve should be adjusted to maintain a flow of
between 5-10l/min.
CAUTION!
CENTRA - S200 US/CENTRA - R200 US Version 01 – 08/14
CENTRA - S200 US/CENTRA - R200 US Operator Manual
1. LOCATE the pressure adjustment valve.
2. ADJUST the pressure in the distribution loop by
TURNING the knob ANTI-CLOCKWISE to decrease
pressure and then use the lock nut to stop it moving.
Note: If the valve starts to make a high pitch noises at
the required settings adjust the valve slightly and
the noise will stop. The noise is caused by the
matching of the natural harmonics of the spring
within the valve and is not a malfunction of the
CENTRA.
The CENTRA pressure regulator is
factory set to maintain a pressure of
3 bar (typically) at the end of the
distribution loop.
Pressure in the distribution loop may
increase, due to filters blocking etc.
which may
distribution pressure (6 bar maximum).
The CENTRA unit is fitted with sensors
to detect high pressure situations and
will shut the unit off if >6 bar is
detected.
within the distribution loop should be
rated to 6 bar to ensure the equipment
remains within safe operating limits.
1. LOCATE sustaining valve.
2. ADJUST the recirculation flow in the distribution loop
by turning the knob (clockwise to increase flow, anti-
clockwise to decrease flow).
Adjustment of the sustaining valve in
the R/S200 US HFV/HFR does not
increase the pressure available in the
loop and incorrect adjustment may
result in reduced performance.
lead to increased
Any equipment installed
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