Don’t splash water onto the heater
，
never use solvent like gasoline, isoamyl acetate, toluene
etc to clean the heater, in order to protect the enclosure.
Clean the coupler, dry and pack it in a plastic bag.
When you store the heater, let it cool down first, keep it dry. Then cover it with a plastic bag,
put in the packing box and store it in a dry, ventilated place.