All you need to add is nitrogen from a local supplier to maintain your system. Reference Ferrell-Ross part number K980-000002 for pricing. Accumulator pre-charge pressure should be set to approximately 65% of operating hydraulic pump pressure. [pdf]
[FAQS about Add nitrogen to the hydraulic station solar container tank]
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One of the most important maintenance tasks is topping up the battery with distilled water to maintain the electrolyte levels. Failing to do so can lead to reduced efficiency and a shorter lifespan. [pdf]
[FAQS about Do you need to add water to the solar container battery ]
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