Hayward Sense and Dispense , ORP and PH Sense, Chemistry Automation | HLCHEM
Hayward Products
SKU: HL-CHEM
Hayward HL-CHEM Sense & Dispense Chemistry Kit (ORP & pH Sensing + pH Dispense Control) for OmniLogic / OmniHub
The Hayward HL-CHEM is an OEM water chemistry sensing and control kit that adds continuous ORP (sanitizer activity) and pH monitoring to compatible Hayward automation. When paired with a compatible chlorine source and a pH-reduction feed device, the system can automatically maintain more consistent sanitizer activity and pH balance with far less manual adjustment.
What It Does
- Continuously measures ORP and pH from a small sample stream on the return line.
- Displays readings in your automation interface for tracking and troubleshooting.
- Provides control outputs for pH reduction (acid feed pump or solenoid valve) using included power pigtails.
- Works with automation logic to help maintain stable water balance and more consistent sanitation.
Compatibility
- Designed as an accessory for Hayward OmniLogic automation systems.
- Also commonly used with Hayward OmniHub systems where Sense & Dispense chemistry control is supported.
- Requires a compatible sanitation method (such as salt chlorination or another controlled chlorine source) and a pH reduction method.
What’s Included
- ORP probe (professional grade)
- pH probe
- Sampling/installation hardware typically used to mount probes on a sample stream
- pH dispense pigtails: one 120V and one 240V receptacle lead to power/control a pH-reducing device
- Tubing/connectors and mounting hardware used for a standard install (as supplied by the manufacturer)
Important: A chemical feed device (acid pump, solenoid valve, CO2 kit, etc.) is typically not included. You’ll choose the dispense method that matches your installation.
Key Installation Notes
- Install the sensing cell/sample point in the recommended plumbing location with steady flow and easy service access.
- Calibrate probes after installation and any time readings drift.
- Use the correct dispense pigtail voltage (120V or 240V) for your pH reduction device.
- Keep probes wet and protected when removed; dried-out probes can be damaged.
- Professional installation is recommended for electrical and chemical feed integration.
Common Reasons to Add HL-CHEM
- Reduce day-to-day manual testing/adjusting
- More consistent pH control (less scaling/corrosion risk from pH swings)
- Automation-based sanitizer activity tracking using ORP
- Integrated chemistry control through your Hayward automation platform
Related Products
- Hayward HL-CHEM (search)
- Hayward OmniLogic Automation (search)
- Hayward OmniHub Automation (search)
- Hayward AQL-CHEM2 CO2 Dispense Kit (120V) (search)
- Hayward AQL-CHEM2-240 CO2 Dispense Kit (240V) (search)
- Peristaltic Acid Feed Pumps (search)
- Replacement ORP Probes (search)
- Replacement pH Probes (search)
Maintenance Tips
- Test water manually regularly (especially during seasonal changes) to confirm automation readings stay in sync.
- Clean probes as needed if readings drift (scale/oils can coat the sensing surfaces).
- Recalibrate after cleaning, probe replacement, or major water chemistry changes.
- Keep chemical feed tubing and injection/check valves inspected—small clogs or leaks can cause big pH swings.
- Maintain balanced water chemistry to reduce scale buildup on probes and plumbing.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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