Frequently asked questions

Weak Suction / Poor Water Pickup – Troubleshooting Step 1: Check the Battery Level Turn on the machine and make sure the battery level is sufficient. Low battery voltage may affect the performance of the vacuum system. If the battery level is low, fully charge the batteries before continuing the test. Step 2: Check the Vacuum Motor Turn on the vacuum function and make sure the vacuum motor is running normally. Listen for the sound of the vacuum motor and check whether there is noticeable airflow or suction. If the machine displays the vacuum motor current or other operating information, check for any abnormal readings or error indicators. If the vacuum motor is running but the suction power is weak or the machine is not picking up water properly, continue with the following checks. Step 3: Check the Recovery Tank Drain Hose Make sure the cap of the recovery tank drain hose is completely closed and tightened. If the drain hose is not properly sealed, the recovery tank cannot maintain the negative pressure required for proper suction, which may result in weak suction or poor water pickup. Step 4: Check the Recovery Tank Lid and Seal With the vacuum motor running, gently try to lift the recovery tank lid. Under normal operating conditions, the vacuum should pull the lid tightly against the tank, making it difficult to lift. If the lid can be lifted easily, inspect the rubber gasket around the recovery tank lid. Make sure it is properly installed and check for cracks, damage, deformation, or gaps that could cause an air leak. Step 5: Check for Excessive Foam in the Recovery Tank Check whether there is excessive foam inside the recovery tank. Using too much cleaning solution or using a high-foaming detergent can create excessive foam during operation. Excessive foam may be drawn into the vacuum system and could eventually reach the vacuum motor, resulting in reduced suction performance or damage to the motor. You can clean the floor with clean water. If the floor is greasy or sticky, you can add solution to the solution tank (lower tank) while adding defoamer/anti-foam in the recovery tank (upper tank) or the vacuum motor might be damaged.  (You can order the solution and defoam here https://www.floorscrubberusa.com/floor-scrubber-accessories) How much solution should be put in clean water tank (lower tank)? Dilute solution according to the degree of soil and method of cleaning. Recommended dilution ratios of clear to water are as follows: (Balance EC) Light soils: 1-2 oz. of cleaner per gallon of water.Medium soils / Deep scrub: 2-4 oz. of cleaner per gallon of water. or (Blaze 8) Light soil: 1:40, Medium soil: 1:20, Heavy soil: 1:10, Pressure washing: up to 1:256. Defoamer in Sewage/Return tanks: Add ½-1 oz. per gallon of return tank capacity. (Industrial & CIP: Add 1 oz. per 50 gallons of mixing tank capacity.) Step 6: Check the Suction Hose Disconnect the suction hose and place your palm near the hose opening to feel the suction strength. If the suction is weak, inspect the hose for clogs, cracks, holes, loose connections, or other damage. Clean the inside of the hose and remove any debris or blockage. If the suction is strong at the hose but the machine still does not pick up water properly, continue checking the squeegee assembly. Step 7: Check the Squeegee Assembly Remove the squeegee assembly and thoroughly clean the suction port. Make sure there is no debris or blockage in the suction opening. Inspect the squeegee blades for excessive wear, cracks, tears, deformation, or other damage. Also make sure the blades are making even contact with the floor. If the squeegee blades are excessively worn or damaged, replace them and test the machine again. Step 8: Check the Recovery Tank Float and Filter Inspect the float and filter inside the recovery tank. Make sure they are clean and not stuck or blocked. A clogged filter or stuck float may restrict airflow and reduce suction performance. Watch a troubleshooting video for weak suction

Not necessarily. Poor water pickup can be caused by several issues, such as a low battery, a loose recovery tank drain hose cap, an improperly sealed recovery tank lid, a clogged or damaged suction hose, worn or incorrectly installed squeegee rubber, or excessive foam in the recovery tank. Check these common causes first before determining that the vacuum motor is faulty.

Replace or rotate the rubber when you notice: Rounded edges Cuts or tears Permanent bending Uneven wear Repeated water streaks after cleaning Poor contact with the floor Cleaning the rubber may help temporarily, but damaged or hardened rubber should be replaced.

The most common causes are worn or dirty squeegee rubber, an improperly sealed recovery tank, a loose or blocked vacuum hose, excessive foam, or an activated float system. Start by cleaning and inspecting the squeegee rubber. Then check the recovery tank, drain hose cap, vacuum hose, and foam level.

This is usually caused by uneven squeegee contact, uneven rubber wear, debris on one side, or an incorrectly installed squeegee assembly. Clean the rubber and confirm that the full blade contacts the floor evenly.

A small amount of water left behind during turns can be normal, especially during sharp or fast turns. The squeegee needs to stay flat against the floor to collect water effectively. Try making wider, slower turns. If excessive water is left behind, check the squeegee rubber, adjustment, suction hose, and vacuum system.

Yes. When the recovery tank is full, the float system may block airflow to help protect the vacuum motor. Empty the tank and clean the float system before continuing.

Yes. You can clean the floor with clean water. If the floor is greasy or sticky, you can add solution to the solution tank (lower tank) while adding defoamer/anti-foam in the recovery tank (upper tank) or the vacuum motor might be damaged.  (You can order the solution and defoam here https://www.crystalfloorscrubber.com/accessories) How much solution should be put in clean water tank (lower tank)? Dilute solution according to the degree of soil and method of cleaning. Recommended dilution ratios of clear to water are as follows: (Balance EC) Light soils: 1-2 oz. of cleaner per gallon of water.Medium soils / Deep scrub: 2-4 oz. of cleaner per gallon of water. or (Blaze 8) Light soil: 1:40, Medium soil: 1:20, Heavy soil: 1:10, Pressure washing: up to 1:256. Defoamer in Sewage/Return tanks: Add ½-1 oz. per gallon of return tank capacity. (Industrial & CIP: Add 1 oz. per 50 gallons of mixing tank capacity.)

Possible causes include: A loose or blocked vacuum hose An open recovery tank lid A damaged lid gasket A loose drain hose cap A stuck float Excessive foam Air leakage in the recovery system Inspect the entire airflow path before replacing the vacuum motor.

Please check: Squeegee rubber condition Squeegee assembly installation Recovery tank level Tank lid and gasket Drain hose cap Float system Vacuum hose connections Foam level Vacuum motor sound Taking a short video of the machine, squeegee area, recovery tank, and vacuum sound can help our support team identify the problem more quickly.

Weak Suction / Poor Water Pickup – Troubleshooting Step 1: Check the Battery Level Turn on the machine and make sure the battery level is sufficient. Low battery voltage may affect the performance of the vacuum system. If the battery level is low, fully charge the batteries before continuing the test. Step 2: Check the Vacuum Motor Turn on the vacuum function and make sure the vacuum motor is running normally. Listen for the sound of the vacuum motor and check whether there is noticeable airflow or suction. If the machine displays the vacuum motor current or other operating information, check for any abnormal readings or error indicators. If the vacuum motor is running but the suction power is weak or the machine is not picking up water properly, continue with the following checks. Step 3: Check the Recovery Tank Drain Hose Make sure the cap of the recovery tank drain hose is completely closed and tightened. If the drain hose is not properly sealed, the recovery tank cannot maintain the negative pressure required for proper suction, which may result in weak suction or poor water pickup. Step 4: Check the Recovery Tank Lid and Seal With the vacuum motor running, gently try to lift the recovery tank lid. Under normal operating conditions, the vacuum should pull the lid tightly against the tank, making it difficult to lift. If the lid can be lifted easily, inspect the rubber gasket around the recovery tank lid. Make sure it is properly installed and check for cracks, damage, deformation, or gaps that could cause an air leak. Step 5: Check for Excessive Foam in the Recovery Tank Check whether there is excessive foam inside the recovery tank. Using too much cleaning solution or using a high-foaming detergent can create excessive foam during operation. Excessive foam may be drawn into the vacuum system and could eventually reach the vacuum motor, resulting in reduced suction performance or damage to the motor. You can clean the floor with clean water. If the floor is greasy or sticky, you can add solution to the solution tank (lower tank) while adding defoamer/anti-foam in the recovery tank (upper tank) or the vacuum motor might be damaged.  (You can order the solution and defoam here https://www.floorscrubberusa.com/floor-scrubber-accessories) How much solution should be put in clean water tank (lower tank)? Dilute solution according to the degree of soil and method of cleaning. Recommended dilution ratios of clear to water are as follows: (Balance EC) Light soils: 1-2 oz. of cleaner per gallon of water.Medium soils / Deep scrub: 2-4 oz. of cleaner per gallon of water. or (Blaze 8) Light soil: 1:40, Medium soil: 1:20, Heavy soil: 1:10, Pressure washing: up to 1:256. Defoamer in Sewage/Return tanks: Add ½-1 oz. per gallon of return tank capacity. (Industrial & CIP: Add 1 oz. per 50 gallons of mixing tank capacity.) Step 6: Check the Suction Hose Disconnect the suction hose and place your palm near the hose opening to feel the suction strength. If the suction is weak, inspect the hose for clogs, cracks, holes, loose connections, or other damage. Clean the inside of the hose and remove any debris or blockage. If the suction is strong at the hose but the machine still does not pick up water properly, continue checking the squeegee assembly. Step 7: Check the Squeegee Assembly Remove the squeegee assembly and thoroughly clean the suction port. Make sure there is no debris or blockage in the suction opening. Inspect the squeegee blades for excessive wear, cracks, tears, deformation, or other damage. Also make sure the blades are making even contact with the floor. If the squeegee blades are excessively worn or damaged, replace them and test the machine again. Step 8: Check the Recovery Tank Float and Filter Inspect the float and filter inside the recovery tank. Make sure they are clean and not stuck or blocked. A clogged filter or stuck float may restrict airflow and reduce suction performance. Watch a troubleshooting video for weak suction