VIQUA S740RL-4C UV Lamp for SHF-140 and SHFM-140
VIQUA S740RL-4C UV Lamp for SHF-140 and SHFM-140
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Description
This S740RL-4C replacement UV lamp bulb is for the VIQUA SHF-140 and SHMF-180 UV systems. Replacing the bulb every 12 months is extremely important to maintain proper system efficacy. The sleeve should be replaced every 24 months or as needed to keep mineral build-up from hindering the lamp's effectiveness.
Why using a genuine VIQUA lamp is important: VIQUA UV systems and lamps are tested and certified as a complete unit. Using an authentic VIQUA lamp ensures proper system performance and water treatment. This video explains the 5 risks of non-VIQUA aftermarket lamps and how to identify authentic VIQUA lamps.
NOTE: Using non-VIQUA lamps voids all UV system certifications and may compromise your warranty should an issue arise.
- Replace lamp every 12 months
Q:
Which systems use the VIQUA S740RL-4C lamp?
A:
The S740RL-4C is the approved replacement lamp for VIQUA SHF-140 and SHFM-140 systems. Confirm the complete part number, including the -4C suffix, because similar S740 lamp numbers fit different equipment.
Q:
How often should the S740RL-4C be replaced?
A:
Replace the lamp after approximately 9,000 operating hours, usually once every 12 months. Its UV output decreases with time even when the lamp still emits visible light.
Q:
Does the S740RL-4C include a quartz sleeve?
A:
No. This SKU is the replacement lamp only. Inspect the system's quartz sleeve during service and order the model-specific sleeve or lamp-and-sleeve kit separately if needed.
Q:
Can I touch the glass when installing this VIQUA lamp?
A:
Avoid touching the lamp glass with bare hands. Use clean gloves and remove accidental fingerprints with an appropriate lint-free cloth before installation, because residue can create hot spots and shorten lamp life.
Q:
Why does the controller still show a lamp reminder after replacement?
A:
The annual lamp timer must be reset according to the SHF/SHFM controller instructions. Also confirm each lamp connector is fully seated before restoring normal operation.
Q:
Should all lamps in a multi-lamp SHF system be serviced together?
A:
Follow the system's maintenance record and controller indications. Replacing lamps on the same annual schedule helps keep output consistent and makes it easier to track service across a multi-lamp chamber.
