Lowara 10HM02P11T, Instructions For Installation And Use Manual, Page: 13 / 76

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Operation Signals
Green light (power) Off No power
Green light (power) On steady Power on
Yellow light (run) Off Pump off
Yellow light (run) On steady / flashing Pump running
These basic signals are integrated by the alarm signals. Therefore there could be combinations of
signals such as green light on (power on), yellow light off (pump off) and flashing red light (alarm).
Alarm Signals
If an alarm is triggered the red light will flash more or less rapidly (flashing – pause – flashing)
depending on the cause of the system shutdown.
Red light (alarm) Flashing No signal from transmitter
shutdown
Or shutdown caused by open
external switch contact
Red light (alarm) Off No malfunction
Red light (alarm) Flashing Overcurrent shutdown
Flashing Red light (alarm) Converter overtemperature
shutdown
Red light (alarm) Flashing Motor overtemperature
shutdown
Red light (alarm) Flashing Shutdown caused by lack of
water on suction side
Red light (alarm) Flashing
Red light (alarm) Flashing
Low voltage (undervoltage)
shutdown
Problems at serial output (for 2-
pump units)
x 2
x 2
x 3
x 3
x 4
x 4
x 5
x 5
x 6
x 6
x 7
x 7
x 8
x 8
Be careful when servicing the system as it could restart automatically.
Shutdown caused by lack of water on suction side:
If the system shuts down because there is not enough water on the suction side, it will restart
automatically when the external device re-enables its operation (float switch or pressure switch or
switch
Ÿ
chapters 6.2.7 and 6.2.8).
The alarm triggered by lack of water on the suction side has no limits as regards the number of
alarms. There is a single lack of water alarm for both pumps.
Shutdown caused by other problems:
The other alarms are independent for each pump. The pump where no alarm has triggered
continues to run, guaranteeing the relative water supply.
Except in the event of lack of water on the suction side, in all other cases the system will verify
every 20 seconds whether the cause of the failure still persists. If the failure has ceased, the
system will restart automatically. If three consecutive alarms occur, the system will shut down
definitively.
In the event of a shutdown, system operation can be restored by disconnecting the power supply
for at least one minute or until all the indicator lights go off.
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If 10 minutes elapse after an alarm without any other failures occurring, the alarm counter will be
reset and the system will make three new attempts to restart.
If two or more alarms are triggered simultaneously (e.g. due to motor overtemperature and lack of
water), only the first failure signal received by the control board is signalled.
CAUTION! The converter does not have a non-erasable alarm log, we therefore recommend that
you observe the flashing frequency carefully before disconnecting the power supply to the TKS
system.
13. Maintenance
The TKS electric pumps do not require any routine maintenance provided that their working limits
are observed (see the pump handbook). Any maintenance operations must be performed by
qualified and experienced personnel, in compliance with the safety regulations in force.
DANGER!
Make sure the pump is disconnected from the power supply before performing any
maintenance operations.
Make sure than no pipes are under pressure before performing any operations on the liquid
end.
USE ORIGINAL SPARE PARTS ONLY
14. Waste Disposal
After the unit has been installed and started, the customer must provide for the appropriate
elimination /disposal of the waste materials according to the legislation locally in force.
If the unit or parts of it must be taken out of service and dismantled, follow local regulations
regarding sorted waste disposal. Refer to the appropriate recycling centres.
CAUTION: Contamination of the environment with hazardous substances such as
battery acid, fuel, oil, plastic, copper, etc., may cause serious damage to the environment and
endanger people’s health.
15. Warranty
Refer to the sales documents for any information.
16. Spare Parts
Information for maintenance personnel
Always state the exact model identification number and construction number when requesting
technical information or spare parts from our Sales and Service Centre.
Use only original spare parts when replacing any faulty components.
The use of unsuitable spare parts can cause malfunctions, personal injury and damage to
property.
DANGER
WARNING
DANGER
RISK OF ELECTRIC
SHOCK