27-05-19 UNI-SAN Domestic Instructions Page 9
If not practical talk to Wallace Pumps about cold water solenoid valve injection systems for dishwasher
discharge.
9.12 Fitting The Cover
Mark the pump delivery pipe centreline position on the cover and cut out with a hole saw
to suit the position of the selected 25 mm or 32 mm delivery pipe position. Cut down from the edge of the hole to
the base to create the slot necessary for installing and future removal of the cover. The pump cable power can be
run through this slot.
9.13 Connection To The Power Supply
Connect the unit to the power supply. Ensure that this complies with all
the relevant requirements of the local power supply authority and any governing body. Switch on the power when
ready.
9.14 Testing
Run water into the unit. The motor and evacuation should start when the liquid is approximately 200
mm deep in the tank and should stop at approximately at 60 mm depth. If the operation does not appear to be
correct, refer to the fault finding section ( Appendix B ).
10. CARE AND SERVICING OF YOUR UNIT
10.1 Normal Usage
The UNI-SAN pumping system is designed for the disposal of waste water with solids which
are able to pass through a plumbing trap and a waste strainer with 10 mm diameter apertures. When fault-finding,
always switch the power off and take care to stay away from moving parts or electrical circuits when switching the
power on or when moving the float level switch.
Do not discharge acids, solvents, paints, thinners, petroleum products, corrosive/abrasive liquids, excessive fats or
any other products that may be harmful to the unit into the tank. A grease trap should be installed in commercial
applications and should be cleaned regularly. The unit is not designed as a kitchen waste disposal unit or for the
disposal of sewage. Refer to our office for the UNI-SAN model or other options.
10.2 External cleaning
The external surface should be cleaned with a damp cloth, and dishwashing detergent if
required. Do not use abrasive liquids or pads, solvents or petroleum products as these may scour or damage the
surface.
10.3 CLEANING INSIDE THE TANK
If you connect to a sink in a food preparation area you may experience fat
or sludge build-up problems in the tank, we recommend that you regularly clean (3 or 6 monthly) the unit with a
solution of household detergent or household bleach. Switch off the power supply. Mix a solution normally used for
vinyl floor cleaning. Pour into the tank through the inspection lid and leave to stand for 20 minutes. Switch on again
and flush with clean water. If required, the inside of the tank can be cleaned manually via the inspection lid.
10.4 Overflow
Where a discharge flows into the UNI-SAN, adequate precautions must be taken to ensure that no
undesirable overflow can occur in the event of the unit not operating due to any cause. Likewise, you should not
continue to discharge more liquid into the unit if the pump does not start as the collection tank fills up or discharge
into it flow rates in excess of the capability of the pump. If you require higher flow rate capacity, call our office for
other options.
Three alternative protection systems can be installed :
1. An audible alarm can be fitted that is activated when the level of fluid inside the pump reaches a high level. This
alarm can also be wired to notify a Building Management System.
2. In addition, drainage into the UNI-SAN unit can be isolated by means of a fail closed solenoid valve on the water
supply to any fitting that discharges into the unit. This valve, if activated either by a power failure or a separate high
