Ispring CU-A4 User Manual

③ Installing the unit and filter cartridges
3.1 Match the stage labels and twist filter cartridges clockwise into the machine head in order.
3.2 On the cabinet wall, mark the two holes of the bracket and install two #8 x 1” round head
screws to hang the unit.
④ Installing the tubing (check Quick Tips for using Quick-fitting)
4.1 Connect the blue tubing with AFW, red tubing with 1
st
stage, white tubing with 4
th
stage.
4.2 Check water route: cold water valve → blue tubing → drinking faucet valve → red tubing
→ 1,2,3,4 stages → white tubing → drinking faucet.
⑤ System startup
5.1 With a towel or bucket underneath, slowly turn on the Cold Water Valve, feel the vibration
and noise of the water flow. If your water pressure is high, DO NOT turn the Inlet Water
Valve all the way up, but sparingly to a level position.
5.2 If it leaks, check if the tubing is fully inserted into quick-fittings and that the nuts and
cartridges are properly tightened.
5.3 Turn on the Drinking Faucet. Water should start flowing. Let it run for 5 - 15 minutes or
until carbon particles are flushed out and water turns clear. The water filter is now ready for
use. Write down the current date on cartridge for future reference. The cartridge set has a
life span of about 6 – 9 months depending on water quality and usage.
⑥ Filter Replacement
6.1 Turn off the inlet water ball valve (COLD) and open the kitchen and drinking faucets to
release pressure.
6.2 With a towel or bucket underneath, twist the filter cartridge wrench counterclockwise to
remove and immediately put the replacement back on. Work in the order from the 1
st
stage
to the 4
th
stage, which is from right to left when facing the front label of the machine head.
Troubleshooting
Symptom
Reason
Resolution
No clean water
from the faucet
1. No water or water pressure < 20 psi
2. Incorrect tubing connections
3. Drinking faucet is off
1. Check water source
2. Check the tubing connections
3. Check the faucet
Slow water
flow
1. Water pressure lower than 20 psi
2. Filter cartridges are due for
replacement
3. 1
st
stage is clogged by sediments
1. Open kitchen faucet to check cold
water pressure
2. Check the installation date and
replacement schedule
3. A whole-house sediment filter is
needed to protect water appliances
No water from
the fridge
Using the included faucet with an ice
maker kit to connect to the fridge
Get iSpring ICEK fridge connector
to connect your ice maker to water
filter
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Ispring CU-A4 Specifications

General

Brand	Ispring
Model	CU-A4
Category	Water Filtration Systems
Language	English