Control unit and method for a gas tank heating arrangement on a concrete surface processing machine

A control unit for a concrete surface processing machine,

• wherein the control unit is arranged to determine an amount of fuel remaining in a gas tank of the concrete surface processing machine, and an associated fuel consumption rate of the machine,
• wherein the control unit is arranged to determine a temperature and/or pressure state of the gas tank, and a temperature and/or pressure rate of change of the gas tank,
• wherein the control unit is arranged to determine a first time period as the time remaining until fuel depletion based on the amount of fuel remaining in the gas tank and on the fuel consumption rate of the machine,
• wherein the control unit is arranged to determine a second time period as the time remaining until the temperature and/or pressure of the gas tank reaches a critically low operating temperature and/or pressure,
• wherein the control unit is arranged to determine a remaining time period of operation as the smallest of the first time period and the second time period.