Cotek SP Series User Manual page 6

 Do not operate near water or in excessive humidity.
 Do not open or disassemble the inverter, and warranty may be
voided.
 The DC side connections should be firm and tight.
 Grounding: Reliable grounding should be maintained.
 Do not drop a metal tool on the battery. The resulting spark or
short-circuit on the battery or on the other electrical part may
cause an explosion.
 Install the inverter in a well-ventilated area. Do not block the front
air vents, or the rear air exhausts of the unit.
 Wiring: Adequate input power must be supplied to the inverter for
proper use; correct wiring sizes must be ensured.
 Mount the inverter such that the fan axis is horizontal.
 Do not operate the inverter close to combustible gas or open fire.
 Do not operate appliances that may feed power back into the
inverter.
 Temperature: The inverter should be operated in an ambient
temperature range of -20℃ to 40℃ otherwise the output
efficiency may be affected. Air flow to the inverter must not be
blocked.
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