Maintenance; Frequently Asked Questions - Projecta SPM25 Manual

MAINTENANCE

Periodically inspect the electrical connections and panel mounting bolts. Make sure they are all tight and free
from corrosion. If necessary clean the surface of the solar panels with a soft dump cloth. Mild detergent can
also be used. Any dirt or residue on the glass may effect performance.

FREQUENTLY ASKED QUESTIONS

Q. Can the solar panel be mounted on a flat roof or wall?
A. Yes. It is fine to mount the panel on a horizontal surface such as a roof or on a vertical surface like a wall as
long as the panel receives full sun for a reasonable period of the day. You will however gain 25% performance
if the panel is tilted toward the sun and faced in a northerly direction, since this enables the maximum amount
of solar energy to reach the panel.
Q. What appliances can I run on the solar panel?
A. Solar panels gain all their energy from the sun and are therefore limited in their ability to operate 12VDC
appliances directly. Although they may run very small appliances it is more common to connect the solar panel
and appliance to a battery. This method is much more effective, provides a stable voltage and allows the
appliance to continue to operate even if the panel is shaded.
Q. Can I run more than one solar panel?
A. It is possible to run multiple solar panels for higher voltage applications or for more power:
1. Placing 2 solar panels in 'Series' will make them suitable for use on 24VDC battery systems or vehicles.
2. Placing 2 or more panels in 'Parallel' will still make them suitable for 12VDC use but will provide twice
as much power (current). Refer to the section "Connecting Multiple Solar Panels".
SOLAR
CONTROLLER
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