What does the comprehensive service of Air Cooler include?

What does the comprehensive service of Air Cooler include?
  When temperatures rises and your air cooler or centralized air-cooling system breaks down, we're here to save your life. Ram Services & Sales offers routine Air Cooler maintenance services and annual maintenance contracts (AMCs) to improve the effectiveness and usefulness of commercial and residential air coolers as well as centralized air-cooling systems. We know that in our area, where the weather is mostly hot and dry, we can't afford to hav