G:\INSTRUCT\MULTISAN PRO\Multisan Pro Instructions 251119.docx Page 12
14. WARRANTY AND LIMITATIONS
The purchaser and / or installer must ensure full compliance with all applicable regulations.
Wallace Pumps does not warrant for any damage to the unit or any other property caused by poor quality installation,
workmanship or installations in contravention with the Company's instructions, or by failure of materials or fittings not
supplied by the Company. The Company does not accept any liability resulting from flooding or from safety breaches,
the user must take the necessary steps to guard against such occurrences.
Subject to the above and where the unit has been installed, operated and maintained in accordance with local plumbing
and electrical regulations and this instruction manual, especially servicing & records as per clause 12.2 page 11 of this
manual, Wallace Pumps warrants the unit for a period of 2 years from the date of purchase, against defects in materials
and workmanship on the basis of return to our distributor's or service agent's premises, freight paid. Contact Wallace
Pumps for a list of names and addresses.
15. Fault Finding Chart
NOTE In the warranty period, any work not described in this manual must be carried out by Wallace Pumps Service Agents,
otherwise your warranty and the product's durability period will be invalidated.
ALWAYS ensure isolation and disconnection of the power supply
to the pump before and whilst carrying out any servicing
work on the unit. Also ensure no liquid will flow into it during servicing.
OCCURRENCE
POSSIBLE CAUSE
REMEDY
1.
-Motor runs
continuously
without clearing the
liquid.
-Level switch operated by water level
remains in the ON position because :
a. pipework is blocked; or
b. pump is blocked; or
c. tank is blocked; or
d. delivery hose is kinked.
e. pressure switch is water logged
-Check that the pipework is clear.
-Turn off the power and check that the pump can
rotate freely in both directions by turning the
shaft at the top end of the motor with a
screwdriver.
-If blocked, clear the obstruction.
-PVC Pipes are recommended.
2.
-Pump runs but
delivers little or no
liquid.
-Delivery head (combination of vertical &
horizontal pipe lengths, pipe bends and
size) is too high for the unit.
-Check the system against the pump operating
parameters. Refer Section 5 (Building design).
-Check that the pump is not pumping the water
level down too low.
3.
- Pump starts but
takes over 10
seconds to reduce
the liquid level in
the tank
(as seen through
the inspection lid).
-Delivery line is partially blocked or too
small.
-Pump is not venting.
-Tank is not venting
-Inflow rate too high
-Unblock and/or change the pipework to the
minimum ID.
-Visually check that the tank vent pipe is clear;
or by releasing the pipe from the tank and blow
down it; or by removing it and flush clean.
-Check that the tank vent functions correctly:
. Liquid should rise in the vent tube until the
pump starts.
. When the pump runs, little or no liquid should
flow through the vent tube. Remove the
inspection lid to check the return flow into the
tank.
. When the pump stops, the liquid in the vent
tube should draw down to empty.
-Refer fault 9 below.
-Call our office for details of changes to achieve
higher head and pump delivery flow rates.
4.
Motor does not start
at all
-Not connected to power supply.
-Power cut/fuse blown.
-Wrong connection to pressure switch
(always off).
-Connect power.
-Restore electrical supply.
-Check the level switch setting and operation.
Refer fault 9 below.
