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The Hydro Mul-CM systems consist of 2 iden cal
Grundfos CM pumps are connected in parallel and mount
ed on a common base frame and provided with a smart
control cabinet.
The booster set is fitted with an on/off switch for the
supply voltage. Pumps are coupled to high-efficiency IE3
Grundfos Blueflux motors.
System components include pressure vessel, suction
and discharge manifolds, 2 non-return valves on the discharge side, a pressure gauge, 2 no. pressure switches,
5-way connector, 2 ball valve isolators for each pump, 1
isolator valve for the system, all mounted on the base frame
for proper operation of the system.

APPLICATIONS: Transfer of water to elevated tanks in various applications, hose reel applications, irrigaon. Pumped liquid
is thin, chemically non-aggressive water, free of impurities, temperature range 5-60⁰C

Control Panel Functions
The control panel offers the following functions:
• Automa c cascade control of pumps by means of pressure switches for duty/standby and assist opera on.
• Automatic pump changeover at any start/stop cycle for an equal number of running hours.
• If a pump is in fault status, it is automatically taken out of opera on
• Automa c rese ng of dry-running fault & • Manual rese ng of overload trip
The control panel also has bu ons for the selection of automatic, stop, and manual opera on, as well as indicators for pump running,
red light for dry running (no water ), fault indicator, and power ON.
The pump system incorporates short-circuit protection by means of fuses, motor protection by means of a thermal overload relay,
dry-running protection by means of an additional level/float switch connection for this is provided in the control panel, start
up delay between two pumps to prevents simultaneous start-up of both pumps and phase failure protecon relay.

Installation
This is required for dry-run protection. It is recommended to install an isolation valve after the common manifold for pressure
testing and isolation of the en re booster set. The set is supplied with a an appropriately sized pressure vessel for proper
operation. A float switch with cable should be connected to the dry run input in the control panel.

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