System Stopping; Summary Of The Start And Adjustment Step - Carel WTS compact Manual Del Usuario

If the permeate fl ow rate is not enough it is advisable to close slightly
the by-pass valve of the pump, to increase pressure to the permeators
and get a higher fl ow rate of demineralised water (obviously with higher
conductivity).
Should the permeate conductivity become too high and not satisfactory
enough, it is advisable to open slightly the pump by-pass valve, to
reduce pressure to the permeators and get water with a lower salt
content (with a reduction of permeate fl ow rate produced). Please note
that the percentage of salt rejection depends on inlet water quality and
temperature and in no way can it be measured only on the conductivity
value at the outlet. To adjust the pump by-pass, remember the following
basic rules:
•
clockwise tightening: close the by-pass, then increase the pressure to
the membranes.
•
anticlockwise loosening: open the by-pass, then decrease the pressure
to the membranes.
2.
Connect the permeate pipe to the expansion vessel, that now has
no water. Please note that the vessel must have been precharged
with compressed air, till getting a pressure of 1.5-1.8 bar. Let the WTS
Compact operate until the vessel is full and thus until the pump stops
automatically (according to the value on the max. pressure switch).
Check that the stop pressure corresponds to about 4 bar.
3.
Manually drain the expansion vessel opening one of the downstream
water taps. Wait until the pump switches on again automatically,
activated by the minimum pressure switch. Make sure that the WTS
Compact starts again when the pressure on the permeate line is
about 2 bar.
3.6 System and intervals of operation
The correct operation of the reverse osmosis system depends on the
continuous production of demineralised water. For a stop shorter
than 10 days, just leave the equipment powered both electrically and
hydraulically, as it occasionally fl ushes the membranes (the default value
is 30 seconds every 24 hours of inactivity). This parameter can be selected
in menu 11H - WASH CYCLE.
For stops longer than 10 days, up to max. 1-2 months, it is advisable to
change the set of periodic fl ushing operations (menu 11H) to 15 minutes
every 48 hours. To change the set of fl ushing operations proceed as
follows:
•
enter the list of items that can be modifi ed;
•
use the and arrows to select the item "11 CLEANING";
•
press
•
scroll through all the templates 11A, 11B, 11C pressing
template 11H is displayed. Pay attention in order not to change the
default values of the scrolled templates.
•
Template 11H is used to set the fl ushing of membranes cyclically
for an x time every n hours. Set the max. duration of the fl ushing,
expressed in minutes and seconds (max. value 99 minutes
and 59 seconds) and the recurrence in hours (max. value 99
hours). Use the and
selected digit; use the and
Caution: setting "00 h" means that the periodic fl ushing is disabled.
•
pressing you return to the main menu confi rming the modifi cations
made.
•
pressing you scroll backwards the various templates, until reaching
the main menu without confi rming the modifi cations made.
For inactivity periods longer than 1-2 months, or when you decide to
disconnect the osmosis system from the hydraulic/electric supply, the
system maintenance procedure must be applied. This procedure implies
draining the system completely and then fi lling it using a dedicated
maintenance liquid. This activity must be exclusively performed by
authorised technical staff , as agreed with Carel.
Caution: please note that during equipment the expansion and
accumulation vessel (if present) must be drained. At the following start,
perform a fl ushing procedure of the line and of the vessel, using
demineralised water. It is recommended to drain and fl ush periodically
the expansion vessel also after long periods of standard operation (about
every two months).
, until
arrows to move the cursor to the
arrows to enter the value.

3.7 Summary of the start and adjustment step

Close the water tap upstream of the system
CLOSED
Disconnect the permeate line
and temporarily convey it to a drain
Slightly open the water tap (one third)
by 33%
Switch on the system and access menu 14
Start the charge solenoid valve using the UP arrow
Start the fl ushing solenoid valve using the LEFT arrow
Wait 10 minutes
Open the upstream water tap (two thirds)
by 66%
Wait 10 minutes
Completely open the upstream water tap
OPEN
Wait 10 minutes
Activate the pump using the RIGHT arrow
Adjust the pump by-pass so that
pressure reaches 2-3 bar
Wait 10 minutes
Close the fl ushing valve (if present)
Adjust the pump by-pass
so that pressure reaches 5-6 bar
Quit the manual procedure
and restore the standard operation
Check the fl ow rate values of the permeate and its conductivity
Connect the permeate pipe to the expansion vessel
Wait until the vessel is full.
Check that the max. pressure is = 4 bar
Drain the vessel. Check that the min. pressure is = 2 bar
13 "osmosi inversa" +0300017IE rel. 1.4 - 05.04.2018
ENG
â
â
â
â
â
â
â
â
â
â
â
â
â
â
â
â