Any ideas on how to keep a food grade chain lubricant from migrating off a low speed 180-2 Drives chain used for a water mist spiral cooler?

Previous attempts at "tacky" oil didn't help. All it did was make the cooler cage and the "product" tacky.

Will a pulse sprayer or drip applicator help?

drip or wick oiler or a grease or if not grease go to a high vis oil >220 or so with a tackifier.
bruce

hi, you may use rocol a non drip formulation specially for over head chain & conveyors
this is extremly good with load carrying
capacity with wide opreating temperature range
for details log on rocol .com

You didn't mention what the requirements were for the lubricant. Does it need to be a H1 (Lubricants with incidental contact) or H2 (Lubricants with no contact)? How is it applied? Oil bath, mist application, drip application or manual application? Texas Refinery Corp. makes a good USDA rated H2 moly chain oil called SURESTA Moly Chain Oil and is a excellent chain lubricant with great "sticking" power.

Also, have you considered a dry film lubricant? It would completly remove any possibility of oil dripping. .