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Guide to Warewashing & Janitorial Equipment
Water & Electrical Connections
Water Connection Requirements:
• Most machines require a 3/4” NPT or flexible braided hose connection
• Install a shutoff valve near the unit for service and emergencies
• Include a backflow prevention device if not built-in
• Ensure water pressure meets machine specs (typically 15–25 PSI)
Electrical Connection Requirements:
• Machines may require 120V, 208V, or 240V service, often single or three-
phase depending on the model
• Booster heaters or high-temp machines will need dedicated circuits
• Always use licensed electricians to confirm panel capacity and ensure GFCI
or local code compliance
Drain Connection:
• Some machines have gravity drains, while others require built-in drain pumps to
lift water to wall drains
• Confirm the height of your existing drain line and whether a drain pump kit is
needed
Tempering Kits — What Are They and Why Are They
Required?
A tempering kit is a safety and compliance component that reduces the
temperature of waste water being discharged from a high-temp dishmachine
before it enters the building’s drainage system. High-temp machines can discharge
rinse water in excess of 180°F (82°C), which can:
• Damage PVC plumbing lines
• Warp or degrade grease traps
• Violate municipal wastewater temperature codes
• Create dangerous steam buildup or condensation
Tempering kits mix cold water with the discharged hot water, safely bringing it
down to a temperature that’s suitable for drainage — usually under 140°F.
All utility connections should be made by certified professionals, and the full
install must pass inspection for occupancy and health department approval.