Customer reported that sewage pump was not working. They could manually pump down by plugging pump directly into outlet. Found float switch covered in debris and not lifting. Used hose to clean pump and float. Cycled pump 7 times after cleaning with no problems. Tested amperage to pump and found within specifications at 11.8 running amps. No other problems found at time of service. Suggest cleaning pump and chamber periodically to keep pump from failing.