Do Grundfos Pumps run hot?

While it’s normal for the pump to heat up, it shouldn’t overheat. If the pump is still overheating, there might be some internal problem causing the heat. We recommend that you consult a mechanic immediately. It’s time for a repair or a replacement!

How do you unblock a Grundfos pump?

Counteraction in case the pump is blocked The pump tries to start with a cycle time of 1.33 seconds and the display shows LED 1 = red and LED 5 = yellow. In this case, please use a Phillips screwdriver No. 2 and put it in the hole in the middle of the front plate. Push it towards the pump and move it counter clockwise.

What is the screw on a Grundfos pump for?

In some Grundfos models, there is a large vent screw on the pump. As you turn the screw, you should hear the sound of escaping air forced by the pressure of water behind the air. Wait for the presence of water around the screw edges to indicate that the air has been removed and then tighten the screw.

How does the Grundfos up15-10s hot water system work?

Please note: Unlike the diagram above, the Grundfos UP15-10S “Comfort” series hot water system works in the following manner: The comfort valve is installed under the faucet farthest from the water heater. The UP 15 series recirculation pump moves the hot water from the heater throughout the pipe back to the heater through the cold water line.

How does the comfort system work on a Grundfos boiler?

Grundfos Comfort System Retrofit Instant Hot Water System How it works: The circulator pumps hot water into the plumbing system which pushes the cold water through the pipes. This cold water then crosses over from the hot piping to the cold piping at the bypass valve.

What is the horsepower of a Grundfos up 50 75?

Grundfos UP50-75 32-100 50 gpm 230V 1/6 hp 1-Phase Cast Iron Circulator Pump Grundfos UP Series 1-1/2 in. 1/6 hp 33 gpm 115V Stainless Steel Circulator Pump Grundfos UP Series 1/12 hp 20.5 gpm 115V 1/2 in. Flanged Stainless Steel Circulator Pump

What is a comfort pm auto recirculating pump?

View complete technical specifications Our most popular home recirculating pump! These Comfort PM AUTO pumps use state of the art technology to provide you a pump that virtually learns your water heating habits, stores the information, and then adapts to operate according to your schedule.