Express Operator's Manual

REV090619

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1.0 – Important Safety Information

This manual contains important safety instructions that must be followed when installing and operating

this product. Before installing or using this product, read all instructions and safety information in this

manual.

1.1 – Product Safety Instructions

• All electrical work must be performed in accordance with local, state, and federal electrical codes.

• This product is designed for indoor or outdoor installation. The enclosure is rated for NEMA-3R use.

• Use insulated tools to reduce the chance of electrical shock or accidental short circuits.

• Remove all jewelry such as rings, watches, bracelets, etc., when installing or performing maintenance

on the PHI Battery Modules or Inverter.

• Always disconnect the batteries or energy source prior to installing or performing maintenance on the

Inverter. Live power may be present at more than one point since an Inverter utilizes both batteries

and AC. Turning off the Inverter may not reduce this risk. As long as AC power is connected, it will

pass through the Inverter regardless of the ON/OFF power switch setting.

• Always verify proper wiring prior to starting the inverter.

• Do not operate the inverter if it has been damaged.

• Do not dismantle the inverter; there are no user-serviceable parts contained in this product.

Attempting to service the unit yourself could cause electrical shock. Internal capacitors remain

charged after all power is disconnected.

1.2 – Battery Safety Instructions

• Wear eye protection (safety glasses) when working with batteries.

• Remove all jewelry such as rings, watches, bracelets, etc., when installing or performing maintenance

on the PHI Battery Modules or Inverter.

• Never work alone. Always have someone near you when working around batteries.

• Use proper lifting techniques when working with batteries.

• All batteries used in and/or paired with the ExprESS must be of the same nameplate voltage and form

factor. Batteries with slightly different total energy capacities may be used within one battery bank,

provided all PHI Installation Manual instructions (see the Manual’s Section 4.4 – Battery Bank

Expansion) are adhered to.

• Batteries are sensitive to changes in temperature. Always install batteries in a stable environment.

• PHI Batteries do not vent any harmful gasses, and do not require special ventilation or cooling.

• Although not applicable to PHI Modules, best practices recommend that you avoid smoking in the

vicinity of batteries.

• To prevent a spark at the battery and reduce the chance of explosion, always connect the cables to

the batteries first. Then connect the cables to the Inverter.

• Use insulated tools at all times.

• Always verify proper polarity and voltage before connecting the batteries to the Inverter.