Power Down The Plunge

• Pause the chiller by pressing the pause button on the UI
  • ⚠️ Powering down the Plunge while it's in a cooling cycle can damage the chiller.
• Press the test button on the GFCI outlet to power down the Plunge.
• Unplug the GFCI outlet from the outlet.

🚨 Important: Do not power down the Plunge before pausing the chiller.

🚨Close Auto-Doser Ball Valves🚨

• Close the two auto-doser ball valves (perpendicular to the piping).
• Important note: Not closing the ball valves will cause the auto-doser probe to dry out and need a recalibration.

Drain The Plunge

• Remove the right ventilation screen. Opposite of the filter housing.
• Locate the main drain manifold at the bottom and remove the cap from the spigot.
• Attach a garden hose or inline pump to the spigot
• Turn the valve on the spigot and the water should flow out
• Turn the valve to close the spigot and install the cap back on.

Remove Chiller Vents and Thumb Nuts

• Remove both chiller vent panels.
• Unscrew all 5 thumb nuts:
  • 3 from the left chiller vent
  • 2 from the right chiller vent
• Note: Bottom-right nut may be an 8mm hex nut—use socket if necessary.

Remove Rear Cover

• Slowly pull and wiggle the rear cover out through the vent openings.

Remove Chiller Mounting Nuts

• Using a 10mm socket remove the 4 nuts securing the chiller to the base frame:
  • 2 on each side of the chiller base.

Cut Electrical Zip Ties

• Cut zip ties securing:
  • LED wire
  • Power cord (if tied to the frame)

Disconnect Plumbing Manifolds

• Remove the 4 manifolds connecting chiller to tub:
  1. Main Drain – under e-box, connects to lower plumbing
  2. TH-1 – right of water filter housing
  3. Flow Meter – connects from rear of water filter to bottom of heat exchanger
  4. Heat Exchanger to Jet – top of heat exchanger to lower plumbing union

Remove Chiller

• Warning: Move slowly. Use 2 people if needed.
• Grab handles on both sides of the chiller base.
• Carefully lift and walk the unit forward.
• Angle the top of the chiller back to clear the e-box from the tub wall.

NOTE: Only pull chiller out far enough to vacuum the entire back of the condenser fan. 

Vacuum Back of Condenser Fan

• Vacuum the back of the condenser fan using a bristle brush head.
• Make sure all lint, dust, and dirt is clear from the back of the condenser fan to ensure proper air flow.

NOTE: Not clearing all lint, dust, and dirt

Install New Chiller

• Warning: Take your time—use two people if necessary.
• Tilt the top of the chiller back and slide the base into the cabinet.
• Lift and shift the unit until bolt holes align with frame.
• Slide bolts through chiller base.

Connect Plumbing to Tub

• Reconnect the 4 manifolds from the new chiller to the tub:
  1. Main Drain → under e-box to tub plumbing
  2. TH-1 → right side of filter housing
  3. Flow Meter → rear of filter housing
  4. Heat Exchanger to Jet → bottom plumbing union
• Note: Confirm o-rings are present on the 2 unions connecting to lower plumbing.

🚨Open the Auto-Doser Ball Valves🚨

• Open the two auto-doser ball valves (perpendicular to the piping).

Important note: Not opening the ball valves before powering on the Plunge can damage and break the chiller.

Prepare for Rear Cover Installation

• Reattach e-box cover (4 screws).
• Secure chiller to frame using the 4 base nuts.
• Pre-install the upper thumb nut (near filter housing) loosely—this area is tight with cover on.

Install Rear Cover

• Carefully slide rear cover over chiller.
• Ensure power cord is routed through the correct side.
• Reinstall all 5 thumb nuts to secure rear panel.
• Attach the left and right chiller vents.