12. Technical data
12.1 Operating conditions
12.1.1 Maximum number of starts and stops
The number of starts and stops via the power supply must not
exceed four times per hour.
When switched on via the power supply, the pump will start after
approx. 5 seconds.
If a higher number of starts and stops is desired, use the digital
input for external start/stop when starting/stopping the pump.
When started via an external on/off digital input, the pump will start
immediately.
12.1.2 Ambient temperature
12.1.2.1 Ambient temperature during storage and
transportation
Minimum -4 °F (-20 °C)
Maximum 131 °F (+55 °C).
12.1.2.2 Ambient temperature during operation
Minimum -4 °F (-20 °C)
Maximum 113 °F (+45 °C) (115 V models)
Maximum 122 °F (+50 °C) (200-240 V models).
The motor can operate with the rated power output (P2) at 122 °F
(50 °C), but continuous operation at higher temperatures will reduce
the expected product life. If the motor is to operate at ambient
temperatures between 122 °F and 140 °F (50 and 60 °C), an
oversized motor must be selected.
Contact Grundfos for further information.
12.1.3 Installation altitude
The installation altitude is the height above sea level of the
installation site.
Products installed up to 3280 ft (1000 m) above sea level can be
loaded 100 %.
The motors can be installed up to 11,482 ft (3500 m) above sea
level.
Products installed more than 3280 (1000 m) above sea
level must not be fully loaded due to the low density and
consequent low cooling effect of the air.
The motor output power (P2) in relation to the altitude above sea
level is shown in the graph.
60
70
80
90
100
Y
X
500
1500
2500
3500
1640
4921
8202
11482
[m]
[ft]
TM071978
Pos.
Description
Y
P2 [%]
X
Altitude [ft (m)]
To maintain the galvanic isolation and ensure correct clearance
according to EN60664-1:2007, adapt the supply voltage to the
altitude.
The supply voltage for a single-phase motor in relation to the
altitude is shown in the graph.
200
210
220
230
240
250
Y
X
500
1500
2500
3500
1640
4921
8202
11482
[m]
[ft]
TM071991
Pos.
Description
Y
Supply voltage
X
Altitude [ft (m)]
12.1.4 Air humidity
Maximum air humidity: 95 %.
If the air humidity is constantly high and above 85 %, the drain
holes in the drive-end flange should be open.
Related information
12.1.5 Motor cooling
To ensure cooling of motor and electronics, the following must be
observed:
•
The motor must be positioned in such a way that adequate
cooling is ensured.
•
The temperature of the cooling air must not exceed 50 °C (122
°F) for 1x230V or 45 °C (113 °F) for 1x115V CMBE pumps.
•
The cooling fins and fan blades must be kept clean.
Related information
12.1.6 Pumps with factory-fitted pressure sensor
The pressure sensor is fitted on the pump outlet side, and the pump
is set to constant pressure.
In this control mode, the pump will adjust its performance, i.e. pump
outlet pressure, to the desired setpoint (Hset).
Q
H
TM056398
Pump in constant-pressure control mode
13. Disposing of the product
WARNING
Magnetic field
Death or serious personal injury
‐
Persons with pacemakers dismantling this product
must exercise caution when handling the magnetic
materials embedded in the rotor.
18
English (US)
