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Installation and operating instructions Wilo-COR..MHIE.../MS 13
If the fault cannot be remedied, please consult a
specialist technician or your closest Wilo customer
service agent.
11 Spare parts
Spare parts may be ordered or repair work
arranged via a specialist retailer and/or Wilo
customer service.
To avoid queries and incorrect orders, all data on
the rating plate should be submitted with each
order.
12 Disposal
Lawful disposal and appropriate recycling of this
product prevents damage to the environment and
risks to health. Disposal in accordance with regu
-
lations requires draining, cleaning and dismantling
of the motor pump unit. Lubricants must be col
-
lected. The components of the pressure-boosting
system must be sorted according to materials
(metal, plastic and electronics).
1. To dispose of the product and its components,
you should contact public or private waste dis
-
posal companies.
2. For further information regarding proper dis
-
posal of the product, contact your local authority,
waste collection and treatment service or the
product’s original point of sale.
For more information, visit www.wilo.com
Subject to technical modifications!
The low-water protection activates
frequently
Low water cut-out switch is set
too high
Adjust and correct the cut-out switch settings.
Municipal water supply pressure
drops when pumps activate
Adjust the low water cut-out switch to a minimum.
If the issue persists, the municipal water supply is
insufficient; check the pressure gauge reading when
the pumps start up or consult the municipal water
supplier.
Automated operation defective Switchgear defective Consult the switchgear instructions.
Sensor defective Check the contacts; replace the sensor in question
if necessary.
Wires disconnected Check all connections to the switchgear terminal
switch.
Discharge valve not sealed Valve diaphragm or gasket is
destroyed
Replace the valves.
The pressure-boosting system does
not stop or does not start
Pressure sensor gate valve is
closed
Open the pressure sensor gate valve.
Fault Cause Remedies
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