Axiom Puropal-Pro-25 Manual

2615 Wentz Avenue, Saskatoon, SK S7K 5J1 Ph: [phone] Fax: [phone]
email: [email protected] website: www.axiomind.com
Installation, operation, and maintenance instructions
for the Puropal-Pro-25 and Puropal-Pro-50 H
2
O
demineralizers
Function
The Puropal-Pro filters lime and aggressive dissolved substances such as sulfates, nitrates and
chlorides out of the local domestic water. The device operates on the basis of a mixed bed ion
exchange resin and provides completely demineralized water that meets fill water specifications of
glycol and boiler manufacturers. It is also possible to demineralize an existing “water only” system
by circulating the system water through the Puropal-Pro demineralizing cart. This method does not
release any chemical additives into the water. The device operates without an external power supply.
Not for drinking water.
The filling apparatus is equipped with precise meters for monitoring pure water production in terms
of quality and quantity.
If the mixed bed ion exchange resin capacity is exhausted, then it can be easily replaced and disposed
of with the household waste.
Protective measures
Only trained personnel should use the filling apparatus.
Operating specifications must be adhered to according to this manual.
Local guidelines are to be followed for the connection between the local domestic water supply and
the closed loop hydronic system.
The system is not suitable for unmonitored, permanent connection under pressure. The valves in the
input and output are to be kept closed and only to be opened for the duration of the system filling.
Even demineralized water contains dissolved gasses, including oxygen and carbon dioxide that can
cause the beginning of the corrosion process. The gases are purged by heating the water, therefore we
recommend carrying out a heating test run for the system as soon as possible after fill-up.

Connection
The input for the untreated water is on the left, the output for the demineralized water for the closed
loop hydronic system is on the right. See Fig. 1 below.
The equipment contains a non-return valve. When the connections are closed, the untreated water
cannot flow through the apparatus.
Puropal-Pro may only be under pressure for the duration of the filling process. A permanent
connection under pressure is not permitted. Under normal domestic water pressure the flow rate
through the Puropal Jr. Pro is approximately 6.6 gpm (25 l/min).
Figure 1: Connections
Open the drain valve on the cartridge only when replacing the resin and only if a hose is connected
to the collection sack. Under no circumstances should you connect the drain valve to a water supply
system.
Empty the water content of the cartridge once before each use since bacteria can build up between
uses. Check to ensure there are no resin pellets in the water.
Max. temp. 60 °C
Max. pressure 87 psi (600 kPa)
Drain valve

Operation
TDS measuring device
The battery powered meter shows the TDS (total dissolved
solids) in ppm in the water. See Fig. 2.
Operation: Switch on using the red button on the top left,
then select the measuring point, (inlet or outlet). As soon as
the value on the output is > 20 ppm the resin in the cartridge
is exhausted. The untreated water hardness can be
determined by measuring the value at the inlet and the
capacity of the resin can be calculated off the capacity graphs
(Fig. 3).
In order to conserve batteries, the meter turns off
automatically after 20 seconds. Reset if necessary.
Flow and quantity meter
The volume of demineralized, and total water can be read off
the flow meters.
Operation: The places after the comma show the litres, the
places in front of the comma show the cubic metre (1,000
litres). Example: 0001.248 is 1,248 L (3.8 L = 1 US gal.).
The top flow meter shows the quantity of completely
demineralized water, the bottom meter shows the total
amount of water, including mixed water.
It is recommended to log the last meter reading when
changing the resin because the meter cannot be reset.
Mixing valve
If demineralization only suffices up to a certain hardness,
then untreated water can be added. The mixing valve is used
as well when cleaning the closed loop hydronic system:
Rinse with untreated water and then fill the closed loop
hydronic system with demineralized water by moving the
valve lever.
Pressure reducing valve
The pressure reducing valve regulates the pressure of the
untreated water with regard to the system.
Operation: Use the screw driver to turn the adjusting screw
in the center of the valve: To the left: pressure is reduced; to
the right, pressure is increased. The higher the pressure, the
faster the water flows through the fill-up station. The
adjusted pressure can be read off the pressure gauge.
The pressure may not be adjusted higher than what the pressure the relief valve of the closed loop
hydronic system is set to. In case of doubt, do not set higher than 30 psi (207 kPa).
Capacity 6.6 gpm
(25 L/min)
Fig. 2: Operation
(29-87 psi)

Capacity of the ion exchanger
The capacity of the ion exchange resin depends on the water hardness. The capacity for the Puropal-
Pr- 25/50 can be read off Fig. 3 below. Example: With a hardness of 11.7 gpg (200 ppm), Puropal-
Pro-25 provides 725 gal (2750 L) of completely demineralized water, and Puropal-Pro-50 provides
1780 gal (6750 L).
Capacity of the Puropal-Pro-25/50
Figure 3: Volume of water that the Puropal-Pro-25/50 can completely demineralize based on TDS
(total dissolved solids) measured in ppm, or gpg (grains per gallon).

Replacing ion exchange resin
If the content of dissolved solids in the treated water exceeds 30 ppm TDS (approx. 2 grains per
gallon) according to the meter, then the resin must be changed. We first recommend that you briefly
interrupt the water supply, shake the cartridge and then slowly turn the water supply back on and fill-
up. The mixing and flow rate restriction will help use up the last of the resin.
a) Emptying used resin. See Fig. 4 below.
1. Close ball valve 1) and 2) at the cartridge inlet and outlet. Leave the Puropal-Pro connected
to the untreated water tap 3).
2. Connect hose to drain valve 4) and insert it into the supplied water-permeable collection
sack. Tightly connect the sack to the top of the hose with a cable binder or tape.
3. Open the drain valve 4).
4. Open ball valve 1) at the inlet.
5. Let the resin drain out and then close the ball valve in inlet 1) again.
6. Let the cartridge drain and then close drain valve 4).
7. If the collection sack is dripping with resin, then dispose of it in the household waste.
Figure 4: Emptying used resin
Open the drain valve on the cartridge only
when replacing the resin and only if a
hose is connected to the collection sack.
Under no circumstances should you
connect the drain valve to a water supply
system.

b) Fill with new resin. See Fig 5 below.
1. Loosen both reinforced hose screws 1) from the apparatus (not at the top on the head).
2. Hold head 2) by hand and unscrew carefully.
3. Remove head together with the spray hose 3).
4. Fill with Puropal resin 5) using funnel 4). Puropal-Pro-25 = one 6.6 gal. (25 L) sack, Puropal-
Pro-50 = two 6.6 gal. (25 L) sacks.
5. Replace head with spray hose. Make sure that the spray hose is pressed into the head until it
is tight and sealed; otherwise, resin will leak into the system.
Figure 5: Filling the Puropal-Pro with new resin
Check that the spray hose is pressed tightly into the head and is sealed otherwise resin will leak into
the system.
Make sure that no resin ends up on the floor. This represents a significant slipping hazard. Carefully
and thoroughly remove any spilled resin off the floor (e.g. with a vacuum cleaner).
The resin pellet is to be stored in a moist place, which is why it is supplied in sealed plastic bags.
Once the bags are opened, use the resin immediately. The resin can be stored in a cool dark place for
up to 12 months. There is the risk of capacity loss and bacteria formation if incorrectly stored.

Trouble shooting the TDS meter
Malfunction Solution
The display goes off after approx.
20 seconds.
This is not a malfunction; it automatically switches off to conserve the
batteries. Press the "POWER" button again.
The inlet value (IN) shows -000- The sensor in the inlet has no measuring values or is defective. Use the flush
valve to check whether the whole unit is full of water. If this is the case and
the malfunction persists, then the measuring device and sensor must be
replaced.
The outlet value (OUT) shows -
000-
Check the water meter to see whether the whole unit is full of water. If this is
the case, then this is not a malfunction, instead it is a correct measurement of
the demineralized water. If it can be assumed that the cartridge is exhausted
(due to the amount of treated water) and the display remains on -000-, then
the measuring device should be replaced along with the sensor.
The display remains empty, even
after pressing the
"POWER" button.
Change batteries. See Fig 6 below.
The display flutters, is difficult to
read or contains illegible
characters.
Change batteries. See Fig 6 below.
The display shows -ERR- Measuring device malfunction. Reset by switching on and off quickly 2-3
times until the display is normal again. Otherwise, remove and reinsert the
batteries.
The resin seems to be used faster
(increased TDS) than the water
There probably is not a malfunction, instead the untreated water contains
dissolved solids (sulfate, nitrate, chloride) in addition to lime, which are
removed and thus reduce the capacity.
Otherwise there is a flow measurement malfunction (see below)
Changing the batteries
Figure 6: Changing the batteries
Flow rate measurement device malfunction
The water meters appear to be too
slow or to not run at all.
A fine sieve is installed in front of the outlet valve in order to prevent resin
from leaking into the system from the apparatus due to an operation failure. If
resin does leak out of the cartridge, it is caught in the fine sieve and interrupts
the function of the armatures. Solution: Rinse and clean armatures out.
First, loosen the
metal housing Pull the measuring device
upward out of the holder.
Loosen and remove
the four metal screws
on the back
Remove back side
and replace 2 AA
batteries.

Reduced flow rate
Malfunction Solution
The flow drops below
15 L/min (4 gpm)
The pressure difference between the water supply line and the counter-
pressure from the system is too low. Open the pressure reduction valve again.
The flow is weak despite the
unrestricted supply line
The fine sieve in the outlet (right side) of the cartridge is blocked.
Loosen screw, rinse out fine sieve and reattach. See Fig. 7 below.
Figure 7: Location of fine sieve at outlet
Drain sieve for residual water
Damage! Preventative solution
The residual water in the resin tank can freeze causing
components to burst!
Frost damage can be prevented by blowing out residual
water with the supplied drain sieve. See Fig. 8 below.
In order to change the resin, the drain sieve must be
removed.
Figure 8: Apply drain sieve before blowing out residual water in the tank.