Grundfos CM Smart, Инструкция по установке и эксплуатации

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9. The green
"Pump on"
indicator light is
on, but the
pump does not
start.
a) The power supply to the pump
is disconnected after the PM
unit. Check the plug and cable connections,
and check if the built-in circuit breaker
of the pump is switched off.
b) The motor protection of the
pump has tripped out due to
overload. Check if the motor/pump is blocked.
c) The pump is defective.
d) The PM unit is defective.
Repair or replace the pump.
Repair or replace the PM unit.
10. The pump does
not start when
water is
consumed.
"Pump on" is
off.
a) Too big difference in height
between the PM unit and the
tapping point. Adjust the installation, or increase the
start pressure.
b) The PM unit is defective.
Repair or replace the PM unit.
11. System
without
pressure tank:
Frequent
starts/stops.
a) DIP switch 5 set to "ON".
b) Leakage in the pipework.
c) The non-return valve is stuck
in open position. Clean or replace the non-return valve.
Set DIP switch 5 to "OFF".
Check and repair the pipework.
Checks (Possible causes) Fault Remedy
8. The green light
field for "0 bar"
is off even if
the power
supply has
been switched
on.
a) The fuses in the electric
installation have blown. Replace the fuses. If the new fuses also
blow, check the electric installation.
b) The earth leakage circuit
breaker or the voltage-
operated circuit breaker has
been tripped out. Cut in the circuit breaker.
c) No power supply.
d) The PM unit is defective.
Contact the power supply authorities.
Repair or replace the PM unit.
12. System with
pressure tank:
Frequent
starts/stops.
a) The pressure tank has no
precharge pressure, or the
tank size is insufficient. Check the tank precharge pressure, and
recharge the tank, if necessary. If the
size of the pressure tank is insufficient,
set DIP switch 5 to "OFF", or replace the
pressure tank.
b) Leaky non-return valve.
Clean or replace the non-return valve.
Fault
F
inding Char
t