Overview; Product Description; Operation - Lowara GXS20 Instrucciones Para La Instalación Y El Uso

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1. Overview

The pressure booster sets, GXS20, GMD20, GMY20 series, are designed to transfer and boost clean
Operating limits
Fluid temperature:
Ambient temperature:
Operating pressure:
Minimum inlet pressure:
Maximum inlet pressure:
Starts per hour:
WARNING

2. Product Description

The pressure booster set consists of two identical electric pumps connected in parallel and mounted on
a common stand, suction and delivery manifolds, on-off valves, check valves, pressure gauge, pressure
The system must be equipped with a membrane
designed for installation of 24-litre tanks with on-off

3. Operation

If the water demand increases, the pressure drops until it reaches the second start value, determining
GXS20 Single-Phase Version
The single-phase version has a QXS20 control panel:
- Automatic sequential pump regulation with low-pressure control from two pressure switches
- Cyclic changeove
- Changeover lock selector switch
- Delay to prevent simultaneous start-up
- Thermal-magnetic switch for short-circuit protection
- erload protection via a motor protector incorporated in the motor
- Dry running protection via a pressure switch or
(accessory electrodes not included)
- Dry running protection cut-in timer
- Shut-down delay timers on both pumps
14
0°C to +40°C, +60°C depending on the type of pump
0°C to +40°C, +45°C, +50°C depending on the type of pump
Max 8 bar, 10 bar, 16 bar depending on the type of pump (see instruc-
tions handbook)
According to NPSH curve and
The inlet pressure plus the pressure supplied by the pump against the
closed valve must always be lower than the maximum operating pressure
Max 60 up to 3 kW, max 40 from 4 kW to
15 kW
Limitations to uid temperature and pressure may be imposed by the membrane
rst pump to be started
resistance; level should be raised by
The delivery manifold is
Along with the tanks, provide a suitable mani-
at switch or level sensors with sensitivity adjustment
kW, max 30 from 11 kW to
with two couplings