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22
2.0
Start-Up / Operation
2.0.1
Start-up check list
a)
Water supply and Drain Connections
:
these should be connected as indicated
under Plumbing and in accordance with the
relevant local regulations. An isolation valve
should be adjacent to the unit. The
connecting
metal
plumbing
must
be
grounded close to the unit.
b)
Steam Line:
This must be connected
according to the installation instructions with
adequate slope and support.
c)
Power supply:
Wiring to the Vapanet unit
Should be by a qualified electrician and
comply with the relevant regulations using
appropriately sized cable and cable glands,
with disconnect and fuses to suit the
maximum fuse rating of the unit at the supply
Voltage. The disconnect/fuses should be
adjacent to the unit or within easy reach and
readily accessible.
d)
Control Connections:
Ensure the control
signal and security circuit are
correctly connected according to the relevant
instructions/diagrams.
e)
VAPANET 24v / 9V Control Circuit
Transformer:
The
standard
24V
transformer used in the units has primary
winding for 200V, 220/240V, 380V, 415V, &
440v 50/60Hz connection derived from the
local electrical supply.
Note: 60Hz connection must be specified
with order as 230V 60Hz pump is required.
f)
The maximum output & kW rating of the unit
is determined by a Current Set Plug. It is
therefore possible to down rate units to any
output, down to approximately 50% of the full
rated output.
g)
Unit Configuration Plug (U.C.P.). Sets the
maximum current level for the unit. It is fitted
directly onto the control P.C.B. If a display is
fitted, it is the only resistor required to be
fitted to the control P.C.B.. However if no
display is present additional resistors need to
be fitted, to provide the microprocessor with
information relating to the control signal etc.
For ease these are fitted to a small PCB
fitted to CR4 of the PCB, and resistor
selection is via shorting links, see control
signal selection on page 13. If insufficient
information is available the unit will remain in
the “not_config” state (see “Used LED” on
page 19) until the information is supplied.
This additional information is provided via
the keypad – when the display is fitted.
2.0.2
Start-Up Instructions
First check:
a)
That the transformer connection matches
supply Voltage.
b)
That the security circuit is closed for unit
operation.
Close the electrical access panel.
Turn on the water supply to the unit.
Close disconnect/circuit breaker feeding supply to the
unit.
Close the On/Off switch.
The display (if fitted) will now show the Set-Up
procedure.
Follow the procedure by:
-
selecting: the preferred language,
-
Attaching the control PCB to the Display.
-
nominating: the type/quality of the supply
water.
-
nominating: the control signal (or Vapac sensor
when being used).
When the control signal has been nominated, the Set-
Up will be entered into the memory. The Set-Up can
then be checked by reading the information menu. If
an error has been made, it will be necessary to go
back to the Set-up menu. If no display is fitted the
information is set using the jumpers on the small
resistor PCB 1150634, fitted to CR4 of the control
PCB.
2.0.3
Commissioning/Start-Up
Once the Set-Up procedure has been completed, the
unit is available to operate according to the
requirements of the control signal.
When starting with an empty cylinder, the VAPANET
programme switches in the contactor and feeds water
in until the water reaches the electrodes, and current
starts to flow. Thereafter the VAPANET system will
continuously monitor and control the conductivity by
adjusting the amount of water drained and fed into the
cylinder.
With no demand the LE unit has the right hand light
will flash red the left hand light will be off. When the
demand increases or the unit is switched on the cyl 1
LED will flashing green Amber at rate depending on
the demand input and the actual current drawn, the
actual run current of each cylinder is monitored and
until the actual current has two feed above 95 % the
LED will flash green amber when the current is above
95% for two consecutive feed the light will flash red.
If twin cylinder unit the second cylinder starts in the
same way but only when the demand is above 50% to
unit
2.0.4
Features
of
VAPANET
Electode
Boiler Unit
The VAPANET system of control is designed to adjust
the function to keep the unit operating in the face of
changing water quality in the cylinder and changing
electrode condition even if, in an adverse operational
circumstance, this results in some reduction in output
while the situation exists.
Foaming protection *
In particular, the VAPANET is designed to prevent the
onset of foaming and to introduce corrective drainage
to keep the unit working.
Automatic switch-off
The VAPANET PCB will stop operating in response to
extreme fault conditions identified as:
Drain Fault STOP (no drain function)
Feed Fault STOP (water not reaching cylinder)
In each case, the display will show the STOP
condition and a Help Message, the User LED’s on the
fascia will indicate the condition see table on page 16.
A warning signal will be available for remote
indication. The STOP condition of a VAPANET PCB
will be cleared via the key pad if a display is fitted or
by pressing the reset button on the fascia – then
switching the unit off and on.
THIS ACTION SHOULD
ONLY BE TAKEN ONCE THE CAUSE OF THE PROBLEM
HAS BEEN ASCERTAINED AND RECTIFIED.