Visually inspect plug connection and wiring condition for loose connections or damage.
Not Good: Secure the connection or perform wire repair [electrical shock warning] unplug Misting system before attempting to perform any wire repair on the system. Consult a professional electrician for repairs on power source wiring.
Good: Proceed to the next step-
Is GFCI/breaker tripped?
No: Proceed to step 3 in this section.
Yes: Proceed to step 4 in this section.
Plug the Mistcooling pump into a different, known-good outlet (the usage of a properly rated extension cord is acceptable for diagnostic purposes):
The system runs properly: The issue is in the original power source, not the Mistcooling system. Please consult a professional electrician for diagnosis of the failed power source.
The system runs but now there is another issue: See the concern selector.
Pump Still does not run: Proceed to Inspect the Water Source.
Reset the GFCI/breaker. Does the pump turn on and continue to run?
Yes: Issue resolved
No: Proceed to the next step-
Did the GFCI/breaker trip again?
No: Return to step 3
Yes: Reset the breaker and plug in another appliance that draws a current similar to the pump. Does the breaker also trip when that appliance is used?
i. Yes: The issue is in the original power source, not the Mistcooling system. Please consult a professional electrician for diagnosis of the failed power source.
ii. No: Contact a Mistcooling technical support agent through email or by scheduling a call.
Visually inspect the water source: Make sure the water is turned fully on. Make sure lines/hoses are free of leaks. Make sure lines/hoses are not kinked, crimped, blocked, twisted, or being squeezed by any objects pressing against them
Not Good: address the issue and recheck operation.
i. Good: Issue resolved.
ii. Not Good: Proceed to the next step-
Good: Proceed to the next step-
Inspect water source output: Start by disconnecting the source line from the pump inlet. Is proper flow and pressure present?
Not Good: work backward down the line by disconnecting the line between the filter to the pump, the filter(s), any line between the filter and source outlet, and any garden hose between the line and source outlet, one at a time to identify the item restricting water flow. Replace as necessary. Find replacement parts here. (If the source outlet itself is restricted, a professional plumber should be contacted. The Mistcooling system is not the issue.)
Good: Proceed to the next step-
Inspect filter for debris and replacement schedule. An overdue/dirty filter may still interfere with pump operation even if some flow is present.
Not Good: Replace the filter. Find filters here.
Good: Proceed to the next step-
Reconnect the known-good water source to the pump inlet, and disconnect the outlet line from the pump. Does it operate when turned on?
Not Good: Proceed to Inspect the Powered Pump Components.
Good: Reconnect outlet to output misting line and recheck operation.
i. Good: Issue resolved. (This procedure likely cleared an airlock that was preventing motor operation).
ii. Not Good: Proceed to the next step-
Check for “airlock.” Remove the inlet line from the pump and make sure the water stream is free of air pockets. Disconnect the outlet line from the pump and reconnect the inlet line to the pump. Operate the pump and make sure the water stream is free of air pockets. Turn off the pump. Reconnect the output line to the pump. Remove the end plug or nozzle from the last misting tee and run the pump until a water stream free of air pockets is present. Reinstall the end plug and check the operation.
Good: Issue resolved.
Not Good: Proceed to Inspect the Powered Pump Components.
Thermal safety switch: If the motor is hot from operating, the internal thermal safety switch prevents it from turning on until it cools. This does not indicate a defect. Make sure the motor has had time to cool off, and recheck the operation.
Good: Issue resolved.
The pump now runs, but there’s another issue: See the Concern selector.
The pump does not run: Proceed to the next step-
Inspect the toggle switch for abnormal looseness or an overly soft or “squishy” engagement.
The switch feels loose or “squishy”: Replace the toggle switch. MC60180
The switch feels normal: Proceed to the next step-
Remove maintenance panels to access both sides of the Motor. [electrical shock warning] contacts inside the housing may have live voltage present. The pump should be unplugged from the power source at any time that internal components are inspected or contacted. Visually inspect the wiring for any loose connections or damage.
Not Good: Have a professional electrician perform wire repairs.
Good: Proceed to the next step-
Inspect carbon brushes*: Paying attention to their orientation, remove both carbon brushes (appears to be a small, round, black plug with a slot for a flat-head screwdriver on each side of the back of the motor). Are either of the brushes worn to 3/8in or below? (uneven wear between the 2 brushes is normal)
Yes: Replace carbon brushes. MC61565 (choose the correct brush for your pump- 0.15GPM or 0.3GPM)
No: Replace motor/pump assembly. Contact a Mistcooling technical support agent through email or by scheduling a call.
i. If under warranty, the unit should be shipped to us for further diagnosis and repair.
ii. If not under warranty, purchasing a new pump unit is the most cost-effective option.
* Note: Carbon brushes are a "wear item." Periodic replacement of carbon brushes is an expected part of maintaining this pump model.