IMP Pumps GHN(M)(D)basic(auto) & SANbasic 40-100 flanges: GB

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

GB

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.

Speed 3

Speed 2

Speed 1

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.

Todeblockthepumpproceedasfollows:

Switchoffthepump,closethevalveonbothpressureandsuctionsidesofthepump,

unscrewtheventfordeaeration,placethescrewdriver(Fig.1-POS.5)inthenotchonthe

shaftandtwistaslongerasfrictionforcesallow.Thenscrewtheventfordeaereation.

Theunitisnotintendedforchildren,adultswithphysical,mentaloremotionalimpairments,

as well as unskilled people, unless under close supervision.

Never leave children unattended near the unit.

While ordering spare parts please provide all particulars indicated on the pump rating

plates.

NOTE: DEAERATE AND START UP THE PUMP ONLY WHEN THE CONNECTOR IS

SWITCHED TO SPEED (3).

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