IMPPUMPS GHN - Setting Pump Speed Modes; Maintenance and Troubleshooting; Maintenance and Service Advice

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GB
Theredashlampconveystheerrornumber.Afterasequenceofashesalongerinterval
proceedsandthenumberofashesbetweentwointervalsindicatestheerrorcode.
Duringtheoperationandwithhightemperaturesofthepumpinguidthepump
will warm up. Do not touch the pump! Danger of burns!
6.2 Setting the speed for the pumps GHN, GHND, GHNM,
GHNMD ( basic)
Eachpumpisabletocovertheareasofthreehydrauliccharacteristics.Toachievethis,
ithasaninbuiltelectricmotorwiththreedifferentrevolutionspeeds.Forachievingthe
selected characteristics or speeds
, the pump has a push button (Fig.2-POS.
4), with which we change speeds.
Setting the speed for the pumps GHN, GHND, GHNM, GHNMD (auto)
is possible by pushing the button formanualinspeeds andforautomatic
by pushing the button
in or .Inbothcases,thepumpfunctionsautomaticallyin
speeds
relativetoow.Duringnightmode thetemperatureofthemediumis
considered,andifthetemperatureofthemediumfalls,thepumpswitchestospeed for
a(>10°C)fall,orspeed fora(>20°C),regardlessofow.Whenthetemperature
risesfor>20°C,operationrelativetoowisagainenabled.Thismethodissuitablefor
systems with thermostatic valves and systems where the system temperature drops at
night.
7. Maintenance / Service
Beforeanyworkisstarted,checkthatthepumpisisolatedfromthepower
supply and cannot be energized. The user of the unit should prevent any
unauthorisedpersonfromuncontrolledrecouplingofthepump.
Incaseofhighwatertemperaturesandpressuresinthesystemallowthe
pump to cool. Danger of burns!
The pumps are high-quality products. For that reason they can operate in normal
conditions several years without maintenance.
Ifapumpdidnotoperateforalongerperiodoftime,itcanbeblockedwhenattempting
to start it.
Speed 1
Speed 2
Speed 3