Technical Data; Operating Conditions; Electrical Data; Disposing Of The Product - Grundfos SE Instrucciones De Instalación Y Funcionamiento

Fault Cause
5. The pump is vibrating a) The pump is partly clogged by impurities.
or emitting excessive
b) The direction of rotation is wrong.
noise.
c) The pump is operating outside the specified
d) The pump is defective.
e) The pump is not properly connected to the
f)
g) The impeller is not in balance.
h) The base stand, the auto coupling, the ring
6. Low motor-liquid level. a) The upper mechanical shaft seal is leaking.

10. Technical data

10.1 Operating conditions

pH value
Pumps in permanent installations can cope with the following pH
values:
Material variant Installation
1)
Standard Dry and submerged
2)
Q Dry and submerged
Submerged
3)
S
Dry
4)
R Dry and submerged
5)
D Dry and submerged
1)
Cast iron impeller, pump housing and motor top cover.
2)
Stainless-steel impeller. Cast-iron pump housing and motor
top cover.
3)
Stainless-steel impeller and pump housing. Cast-iron motor
top cover. Material variant S is available on request.
4)
Entire pump is made of stainless steel.
5)
Stainless-steel pump according to EN 1.4517/1.4539. Material
variant D is available on request.
6)
For fluctuating pH values, the range is pH 4 to 14.
10.1.1 Flow rate
We advise you to keep a minimum flow velocity to avoid
sedimentation in the pipes. Recommended flow velocities:
• in vertical pipes: 2.3 ft/s (0.7 m/s).
• in horizontal pipes: 3.3 ft/s (1.0 m/s)
22
operating range.
auto coupling.
The pump is cavitating.
stand or the guide rails are not installed
correctly.
pH value
6)
6 to 14
6)
6 to 14
6)
5.5 to 14
1 to 14
1 to 14
0 to 14
Remedy
Clean the pump.
Interchange two phases to the motor.
Re-establish proper operating conditions.
Repair the pump or contact an authorized workshop, if
necessary.
Pump down the liquid level in the pit. Lift out the pump
and place the pump on the auto coupling again.
Clean the inlet pipe.
Contact an authorized service workshop.
Install the components correctly.
Contact an authorized service workshop.
10.1.2 Ambient temperature
For explosion-proof pumps, the ambient temperature
on the installation site must be in the range from -4 to
FM
+104 °F (-20 to +40 °C).
For non-explosion proof pumps, the ambient temperature may
exceed 104 °F (40 °C) for a short period (maximum 3 minutes).
10.1.3 Liquid temperature
32-104 °F (0-40 °C).
For short periods, maximum 3 minutes, a temperature of up to
140 °F (60 °C) is permissible (non-Ex versions only).
Explosion-proof pumps must never pump liquids of a
FM
temperature higher than 104 °F (40 °C).
10.1.4 Frequency of starts and stops
The pumps are designed for continuous operation or for
intermittent operation. Maximum number of starts per hour is 20.

10.2 Electrical data

10.2.1 Supply voltage
The supply voltage and frequency are marked on the pump
nameplate.
The voltage tolerance at the motor terminals must be within - 10
%/+ 10 % of the rated voltage.

11. Disposing of the product

This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company
or service workshop.
See also end-of-life information at www.grundfos.com/product-
recycling.