Maintenance · 2026-10-09

How to Store and Maintain a Diesel Generator During the Rainy Season

Keep it dry and ventilated

Water ingress is the biggest killer of standby generators in tropical climates.
Place the set under a roof or in a ventilated shed, on a raised concrete pad rather than directly on wet ground.
Never cover a running set with a tarpaulin; it blocks cooling air.

Protect the electrical parts

Check the canopy seals and cable gland entries for gaps.
Smear a light film of grease on battery terminals to prevent corrosion.
Keep the control panel door closed and inspect it for condensation after heavy rain.

Manage the fuel

Keep the tank as full as practical so there is less air space for condensation.
Add a biocide fuel treatment if the set sits unused for months, because water in diesel encourages microbial growth.
Drain water from the fuel filter before every start during the rainy season.

Run it regularly

Start the set and run it on load for 30 to 60 minutes every two weeks.
This drives out moisture, lubricates the seals and confirms the set will work when you need it.
During the run, check for leaks, unusual smoke and abnormal noise.

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