Emerson ZX User Manual page 45

on the board. It is important not to upgrade this from its design 3.5 A rating otherwise the
E2 will not be protected. If the fuse keeps blowing this is usually an indication that some
external (to the E2 panel) and connected device (ie; solenoid valve coil) is causing the
problem.
The E2 has been designed with a simple, metal dust protector cover and it should be a
simple matter to remove two screws from the front of the nit to allow the E2 to be removed
for inspection. The attached wiring harnesses have been designed to assist this also.
It is strongly advisable not to touch any components on the E2 Board unless anti-static
finger cots are used.
Note : The E2 Board casing must not be removed and the E2 Board tampered with
unless absolutely necessary !
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Routine Leak Testing
All joints with in the system should be leak checked during each site service time. If you
find the oil imprint around the joints or in the ground near the joints, there may be a leak in
the joint.
All joints within the system should be leak tested once per year. This is purely a
recommendation based on thermal expansion/contraction that does occur in the unit pipe
work.
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Condenser Fan(s) & Motor(s)
An yearly inspection of these items is recommended. Fastenings can come loose,
bearings may wear and fans may require cleaning of solid deposits that can cause
rotational imbalance. Motors come with lifelong lubrication bearings that do not require
lubricating on a routine basis ; just need to check for wear.
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