EXPERIENCES:
Although most pumps installed with Pumptron as means of protection and control have been running faultlessly since our first installation in 1995, there have been
many cases where the benefit of Pumptron is evident.
Here are some of those experiences. |
A
New Installation
Once the bore installation was
completed and Pumptron adjusted, it run for 20 minutes and stop as if there
was no water although there was still plenty. When the start button was
pressed it placed the system on overload. Pumptron was readjusted and the
pump run for further 16 minutes and repeated as before. A new Pumptron was
tried with the same results.
Once the pump was retrieved it was
found to be blocked with sand.
The drilling company repaired de
bore. |
An
Old Bore
Pumptron replaced another controller
on an old bore. After a few weeks of running one day it stop pumping water
where presumably there was plenty. Pressing Reset started the pump for ten
seconds but no water flowed.
The diagnostic was something had
blocked water circulation or the bore was dry or a mechanical fault
disconnected the motor to the pump.
The pump was retrieved to find the
returned valve broke and was permanently closed.
The pump was repaired and now
operating. |
Pump Failure
A 7KV - 3 phase pump would not work even during the ten seconds priming time.
This pump has an integrated thermostat switch; the switch was connected to Pumptron's "float switch" facility. This would
cause the pump to stop if an indication of overheating would occur.
It was found that the thermostat switch of the pump had failed as it would not connect even when the pump had been OFF
from one day to another.
The pump was then connected bypassing the thermostat.
Heat is a
consequence of overload. Pumptron's sensitive overload detector provides the necessary protection. The pump has been running faultlessly since August 2002.
|
Bad Bore
After four weeks from installation of this 3KV - 3 phase pump, Pumptron reported overload.
The pump was retrieved from a 200m deep bore to discover it was blocked by a massive iron oxide build up.
The pump was
cleaned and reinstalled but another four weeks Pumptron went on Overload
again with the same cause.
It was decided not to use the bore.
The pump was undamaged and saved for further use. |
Special Installation
From a bore a tank is filled and from that tank using a surface motor just
below the tank level, water is pumped to two large tanks placed at 1.5 Km
away and 370 meters high.
A two phase 480 Volts
motor is used controlled by a Pumptron 3-PH model using inputs phases 1 & 3 Because the pump is
below the tank level it recreates the same conditions as in a bore.
A solar powered telemetry system is installed at the tanks up hill to
transmit a signal when the level is full; the telemetry receiver is
connected into Pumptron's "Level Input" plug.
The system operates
continuously and automatically under protection and control. |
