GEL LONG LIFE SUPERFLUSH 40 Notice Technique - Utilisation Et Entretien page 10

6.2 DESCALING
Descaling with chemicals
To carry out a descaling with chemicals, operate as follows:
1) Screw the ends of the flexible hoses to the system to be descaled.
2) Connect the overflow hose to a suitable drain.
3) Connect the power supply cable to a single-phase 230 V / 50 Hz
socket.
4) Make sure the tank cap is open, to allow any fumes formed during
descaling to escape.
5) Set the valves as per Figure 3, add the chemical into the tank.
6) Circulate the chemical in the system circuit for approximately 5-10
minutes.
7) Once this time has passed, reverse the flow leaving the position of
valves as it is.
8) Should the chemical be changing its initial colour, it shall be refilled
immediately as exhausted.
9) Repeat the operations until the colour intensity of the flushing
solution is changing, for a minimum working time of 2-3 hours.
10) After descaling, open the dump to eliminate residual acid caused by
descaling and go to the next step (Neutralization after descaling).
Notice: Use descaling chemicals suitable for the system materials.
water
open
open
Fig.3
Neutralization
To neutralize the system with BOILER CLEANER N, operate as follows:
water
1) Make sure the tank cap is open to visually check water level in the
open
tank.
open
2) Pour a 2-3% amount of BOILER CLEANER N by referring to the
warnings on the packaging and product label. Fig.4
3) Set the valves and flow reverser as per Figure 5. Open the clean water
inlet tap and switch on the pump.
water
osed
osed
Fig.5
water
osed
osed
Fig.5
4) Circulate the neutralizing solution in the system for approximately 2
minutes to neutralize residual acidity present in the equipment.
5) Once this time has passed, set the valves and flow reverser as per
water
osed
Figure 6.
osed
Fig.6
water
osed
osed
Fig.6
6) Circulate the neutralizing solution in the system for approximately 2
minutes to remove residual acidity present in the equipment.
7) Repeat the operations until dump water is free from any chemical
residues.
8) Dump the neutralizing solution used.
10
Mains water
supply closed
Dump closed
Fig.5
Mains water
supply closed
Dump closed
Fig.6
Mains water
supply open
Dump open
Fig.7
Mains water
supply open
Dump open
Fig.7
Mains water
supply open
Dump open
Mains water
supply open
Dump open
Mains water
supply open
Dump open
Fig.1
Mains water
supply open
Dump open
Fig.2
6.3 CLEANING NEW SYSTEMS WITH CHEMICAL LONG LIFE 300
To clean a new heating system, operate as follows:
1) Make sure the overflow hose is connected to a suitable drain.
2) Make sure the power supply cable is connected to a single-phase 230
V / 50 Hz socket.
3) Make sure the tank cap is open to visually check product level in the
tank.
4) Set the valves and flow reverser as per Figure 1. Open the clean water
inlet tap and switch on the pump.
Fig.1
Fig.1
5) Circulate the chemical in the system for approximately 2 minutes to
remove working and welding residues, greases and oils which may be
present in new heating systems.
6) After 2 minutes set the valves and flow reverser as per Figure 2.
Mains water
supply open
Dump open
Fig.2
Fig.2
7) Circulate the chemical in the system for approximately 2 minutes to
Mains water
remove working and welding residues, greases and oils which may be
supply open
Dump open
present in new heating systems.
8) Once this time has passed, repeat the operations until dump water is
free from any residues in a time not lower to 1-2 hours.
6.4 POWER FLUSHING UNDERFLOOR SYSTEMS FROM
BACTERIAL LOAD WITH LONG LIFE 710
To power flush underfloor heating systems from bacterial load with Long
Mains water
supply closed
Life 710, operate as follows:
Dump closed
1) Make sure the ends of the flexible hoses are connected to the
underfloor system to be power flushed.
Mains water
2) Make sure the overflow hose is connected to a suitable drain.
supply closed
Dump closed
3) Make sure the power supply cable is connected to a single-phase 230
V / 50 Hz socket.
4) Make sure the tank cap is open to visually check the level of the
chemical Long Life 710 in the tank.
5) Set the valves and flow reverser as Figure 3, add the biocide-sanitizer
chemical into the tank (add tap water if necessary) by making sure
the liquid level in the tank remains between the MIN and MAX levels
marked on the tank.
6) Circulate the chemical in the system circuit for approximately 5-10
minutes.
7) After 5-10 minutes, leave the position of valves as it is, reverse the
flow and circulate the chemical in the system circuit for further 5-10
minutes approximately.
8) Repeat the operations for a minimum working time of 2-3 hours.
9) After power flushing with the chemical, open the dump to eliminate
the residual chemical after flushing.
Fig.3
Fig.4
Mains water
supply open
Dump open
Fig.3
Mains water
supply open
Dump open
Fig.3
Mains water
supply open
Mains water
Dump open
supply closed
Dump closed
Mains water
Fig.4
supply open
Fig.7
Dump open
Fig.4
Mains water
supply closed
Dump closed
Fig.5
Mains water
supply closed
Dump closed
Fig.6