Cartridge Replacement Instructions - 3M Aqua-Pure AP430SS Installation And Operating Instructions Manual

IMPORTANT INSTALLATION INSTRUCTIONS (Continued)
4. Using the valve compression fitting, attach the gate valve to the incoming water
supply pipe after the system. Firmly tighten compression nut. (Figure 4)
IMPORTANT NOTES
It may be necessary to slightly spread pipe ends apart in order to insert the
AP430SS head assembly with adapters into valve.
5. Tighten all compression nuts firmly, keeping the AP430SS head assembly vertical.
(Figure 5)
6. Screw cartridge to the right into the AP430SS filter head. Turn on main water
supply, open valves and check for leaks. (Figure 6)
IMPORTANT NOTES
Optional: By-Pass Section can be installed around unit if desired using either
threaded or sweated fitting. (Figure 7)
To reduce the risk associated with property damage due to water leakage or
flooding:
• Protect from freezing, remove cartridge when temperatures are expected to
drop below 40°F (4.4°C).
• Ensure all tubing and fittings are secure and free of leaks.
• Do not install if water pressure exceeds 125 psi (862 kPa). If your water
pressure exceeds 80 psi (552 kPa), you must install a pressure limiting valve.
Contact a plumbing professional if you are uncertain how to check your water
pressure.
• Do not install where water hammer conditions may occur. If water hammer
conditions exist you must install a water hammer arrester. Contact a plumb-
ing professional if you are uncertain how to check for this condition.
To reduce the risk of water leakage of flooding, and to ensure optimal filter
performance:
• Change disposable filter cartridge every 6 months or sooner if you
observe a noticable reduction in water flow rate.
• Failure to replace the disposable filter cartridge at recommended
intervals may lead to reduced filter performance and cracks in the filter
housing, causing water leakage or flooding.
Always have spare cartridges on hand.
1. Shut off inlet (Stop and Waste) and outlet (Compression Gate) valves. Open drain
on inlet valve, to relieve pressure in the AP430SS.
2. Unscrew the cartridge (AP431) to the left as shown in the illustration. (Figure 8)
3. Install the new cartridge, moderately hand tight. Never use tools to tighten a
cartridge.
4. Turn on inlet valve and bleed air through gate valve drain until water appears.
Then close drain, and open outlet valve.
NOTICE

CARTRIDGE REPLACEMENT INSTRUCTIONS

NOTICE
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8