Section 7 – Troubleshooting
43
7.7
Output Fuse Replacement
The
easyCHEM 770
has a 10 Amp fuse to protect the instrument from excessive power drain from
the main Pool Pump. This can occur due to any of the following reasons…
•
The Pool Pump has a power rating higher than 10 Amps.
•
The Pool Pump has a larger than normal start-up current, which exceeds 10 Amps long
enough for the fuse to blow.
•
The Pool Pump is faulty.
Other factors can also cause the fuse to blow, but these are the most common.
To replace the fuse…
1. Switch off the
easyCHEM 770
at the mains power outlet and unplug the power lead.
2. Locate the fuse holder on the left hand
underneath side of the unit. Un-screw it anti-
clockwise until it can be removed.
3. Fully remove the glass fuse from the fuse holder.
4. Replace the fuse with a 3AG type 250V 10A fuse.
This should be the standard “fast blow” type.
A “slow blow” type fuse may be used if the unit
blows fuses consistently when the pool pump
starts.
5. Insert the fuse holder into the
easyCHEM 770
.
Push it into place then screw clockwise until it is
firmly fastened in place.
DO NOT OVERTIGHTEN.
6. The
easyCHEM 770
can now be connected to the mains power outlet and switched on.
7. If fuses continue to blow, the problem causing this situation must be rectified. Please consult
the pump supplier or TPS directly.
