just got my ROES-50, one of the plastic filter housings has a small crack from shipping. can i still install it?

Diagnosis

The APEC ROES-50 utilizes high-pressure reinforced polypropylene housings designed to withstand significant hydraulic stress. Even a hairline fracture—often caused by impact during shipping or over-tightening during factory quality checks—compromises the structural integrity of the vessel. Because the ROES-50 operates on a pressure differential to force water through the semi-permeable membrane, the housings are under constant tension. A small crack may seem insignificant when the system is dry, but once the cold water supply line is opened, the internal pressure (typically between 40 and 100 PSI) will force water through the fissure. Because the plastic is rigid, these cracks tend to propagate or "spiderweb" under the stress of temperature fluctuations and pressure surges. This leads to a catastrophic failure known as a "burst housing," where the plastic snaps completely, potentially flooding your cabinetry and flooring in seconds. You can confirm the severity by inspecting the crack with a bright LED flashlight; if the crack penetrates the wall of the housing or is located near the threaded top-neck, the unit is fundamentally unsafe for use.

How to Fix It

You must replace the damaged housing before any water is introduced to the system. Do not attempt to seal the crack with epoxy, silicone, or waterproof tape, as these adhesives cannot withstand the constant pressure of a potable water system and will eventually peel away.

1. Identify the specific stage: Determine which housing is cracked. The ROES-50 has three pre-filter housings (Sediment, Carbon Block, and GAC) and one membrane housing. Note whether it is a standard 10-inch housing or the specialized membrane vessel.
2. Document the damage: Take clear, high-resolution photos of the crack and the shipping box. Capture the serial number located on the system frame or the packaging to expedite the warranty claim.
3. Contact APEC Support: Reach out to APEC Water Systems or your authorized vendor. Request a replacement "10-inch High-Pressure Polypropylene Housing" (or the specific membrane housing if that is the damaged part).
4. Verify the O-Ring: When the replacement housing arrives, ensure it includes a new EPDM O-ring. If the original O-ring was contaminated with debris during the shipping damage, it must be replaced to ensure a watertight seal.
5. Install the new housing: Thread the new housing into the manifold by hand to avoid cross-threading. Once finger-tight, use the provided housing wrench to turn it an additional 1/4 turn. Do not over-tighten, as this is the primary cause of new cracks.

If That Didn't Work

• Purchase a Generic 10" Housing: If the vendor is slow to respond and you need water immediately, the ROES-50 uses industry-standard 10-inch housings. You can purchase a high-quality replacement housing from a local plumbing supply store, provided it matches the port size (typically 1/4" or 3/8") and the thread pitch of the APEC manifold.
• Full System Exchange: If you discover multiple hairline fractures across different housings, it indicates a "rough transit" event. In this case, request a full system replacement rather than individual parts, as the stress of shipping may have compromised the plastic seals in the RO membrane head as well.
• Inspect the Manifold: If the crack is located exactly where the housing screws into the top manifold, check the manifold threads for stripping. If the manifold itself is cracked, replacing the housing will not fix the leak; you will need a replacement top-bracket assembly.

Heads Up

• Avoid Chemical Sealants: Never use PVC glue or industrial adhesives on the interior of the housing. These chemicals can leach into your drinking water and are not food-grade certified (NSF/ANSI 61).
• The "Wrench Rule": Always use the specific plastic spanner wrench provided with the ROES-50. Using a pipe wrench or pliers can distort the circular shape of the housing, creating new stress points that lead to cracks.
• Check for "Shipping Shakes": Before installing the replacement, gently shake the other housings. If you hear any rattling or see white "stress marks" (discoloration in the plastic), those housings are also compromised and should be replaced.
• Pressure Testing: Once the replacement is installed, open the water supply valve slowly. Leave a dry paper towel wrapped around the housing for 24 hours to detect "weeping" leaks that aren't immediately visible.