9
(F) Maintenance
Caution:
If your unit is not used in winter, or will be subject to freezing temperatures, drain unit and remove
cartridges from sumps. Place cartridges in sink or on a paper towel to dry over several days.
Note:
Lubricate Head O-rings (2502) after every cartridge change/cleaning and when draining for winter. Use food
grade silicone grease (i.e. Dow 111 compound) or any other non-petroleum lubricant.
Caution:
Due to a limited product service life and to prevent costly repairs or possible water damage, we strongly
recommend that sumps (#520) be replaced every 5 years. If sumps of your RO system have been used for more
than this period, replace immediately. Date the bottom of any new sump to indicate next replacement date.
Do Not
clean housing with organic solvents such as those found in sprays for cleaning products or insecticides as
these may cause cracking or crazing and lead to failure and leakage.
Item
PART #
FUNCTION
Replacement
Frequency
Where available
Pre-filter 1
HP1
Sediment
4-6 months
Major retailers or
home improvement
stores
Pre-filter 2
CF2
Chlorine, taste & odour
RO Membrane
ROM50
TDS reduction
1-4 years avg
Head seals
2502
1 year
Sump**
520
5 years
Call Rainfresh or order
online at
www.rainfreshstore.ca
Vent pin assembly
2505
5 years
Other parts
*Note:
Cartridge life is directly dependant on water conditions and volume of water filtered. Excessive sediment may cause more frequent
replacement. Contaminants reduced by these filters/cartridges are not necessarily in your water.
Cartridge Replacement Schedule
Caution:
Routine maintenance of this unit may involve some water spillage. Keep an ample supply of
paper towels or absorbent cloth handy.
Pre-filter Replacement Procedure (HP1 & CF2)
1. Shut off cold water supply to the unit, shut off tank valve and turn on faucet to de-pressurize unit.
2. Turn sumps 1/8 turn to left, lower to remove, discard old filters and insert new filters. Replace sumps
and turn 1/8 turn to right fully to stop (Lock Position).
3. Open supply valve, check for leaks, then open tank valve.
Post-Filter Replacement (IM200)
1.
Shut off cold water supply to the unit, shut off tank valve and turn on faucet to de-pressurize unit.
2.
At each end of the post-filter, push the collet in with two fingers and pull the tubing out.
3.
Lift post filter out of double clips (2605). Push new post filter on to clips (make sure arrow on filter
points in correct direction (right to left).
4.
Push tubes firmly back into collets 5/8” to tube stop at both ends.
5.
Open supply valve, check for leaks, then open the tank valve. Open the faucet and let water flush. The
water will initially have black activated carbon residue which will clear up in about a minute.
Membrane Replacement (ROM50)
a)
End of membrane life is indicated by increase in the permeate TDS
(mineral content) or low or no product water flow.
b)
Shut off cold water supply and the tank valve and turn on RO
faucet to de-pressurize unit.
c)
Undo tubing on the inlet fitting (2609) of membrane housing by
pressing the collet in with two fingers on either side and pull out
the tubing. Unscrew membrane housing cap and using pliers, pull
old membrane out of housing.
