Owner’s Manual
Quantum Energy Technologies
Document number: QDC0030PD-16.4 Page 16 of 36
3. Remove the blanking plug (brass fitting) from the unused inlet (normally on the right
hand side for left hand connected tanks) – the inlets are at the bottom of the tank 70mm up
from the base.
4. Remove the blanking plug from the unused hot water outlet (normally on the right hand
side for left hand connected tanks) – the outlets are at the top of the tank.
5. Allow the water to drain from tank, while the water is draining a non-metallic rod may be
inserted through the open cold-water inlet and used to break up any sludge and assist in its
removal.
6. Care should be exercised during this procedure so as not to damage the glass lining of the
tank. The use of metal rods should not be used and plastic or wooden rods used instead.
7. Turning the cold water supply back on while the tank is emptying or after the tank has
drained and continuing with the mechanical agitation will further assist with the removal
of the sludge.
8. Once the tank has been cleaned, as much as possible, the cold water should be turned off
again and the blanking plugs refitted. Care should be taken to ensure good a hydraulic seal
is maintained – the use of plumbing tape will be required.
9. When the unit is fully reassembled the cold water supply and power supply can be turned
on and the unit allowed to reheat.
6f.5: Refrigeration & Thermostat Servicing
Qualified refrigeration technicians only should service the heat pump. The information provided
in
Appendix A: Trouble Shooting Guide
will provide the necessary information for qualified
personnel to service this part of the unit.
Section 7: RECOGNITION OF ABNORMAL OPERATION
7a: Pressure & Temperature Relief Valve Running
It is not unusual for the Pressure & Temperature Relief valve to allow a small quantity of water to
escape during the heating cycle. The amount of discharge will depend on hot water usage. As a
guide, if it discharges more than 20 litres of water in 24 hours then there may be a problem.
7a.1: Continuous Trickle
Likely caused by a build up of foreign matter. Try gently operating the release mechanism on the
Pressure & Temperature Relief valve for a few seconds. This may dislodge any small particles of
foreign matter and rectify the fault.
7a.2: Steady Flow
Likely causes are excessive water supply pressure (500kPa Pressure Limiting valve should be
fitted), a faulty Pressure & Temperature Relief valve, a faulty or non existent pressure limiting
valve or a faulty Thermostat / Digital Controller. Turn off the electricity supply and contact your
Quantum distributor or service agent.
7b: No Hot Water
1. Is the Electricity switched on? Check that the isolating switch, to which the Quantum
is connected, is on. Check that the switch marked “Water Heater” in the switchboard is
on. Are all circuit breakers on? If on Off Peak, is the meter switching on when it should?
If the system is connected to some form of Off Peak metering, running out of hot water
