Grundfos SPKE Series, Installation And Operating Instructions Manual

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31
English (US)
20. Maintenance and service
20.1 Cleaning of the motor
Keep the motor cooling fins and fan blades clean to ensure
sufficient cooling of the motor and electronics.
20.2 Relubrication of motor bearings
0.5 - 10 Hp pumps
The motor bearings are of the closed type and greased for life.
The bearings cannot be relubricated.
15 - 30 Hp pumps
The motor bearings are of the open type and must be relubricated
regularly.
The motor bearings are prelubricated on delivery. The built-in
bearing monitoring function will give a warning indication on the
R100 when the motor bearings are due to be relubricated.
When relubricating the first time, use the double quantity of
grease as the lubricating channel is still empty.
The recommended grease type is a polycarbamide-based
lubricating grease.
20.3 Replacement of motor bearings
15 - 30 Hp motors have built-in bearing monitoring function which
will give a warning indication on the R100 when the motor
bearings are due to be replaced.
20.4 Replacement of varistor (only 15 - 30 Hp)
The varistor protects the pump against voltage transients. If
voltage transients occur, the varistor will be worn over time and
need to be replaced. The more transients, the more quickly the
varistor will be worn. When it is time to replace the varistor, R100
and PC Tool E-products will indicate this as a warning.
A Grundfos technician is required for replacement of the varistor.
Contact your local Grundfos company for assistance.
20.5 Service parts and service kits
For further information on service parts and service kits, visit
www.Grundfos.com, select country, select WebCAPS.
21. Technical data - single-phase pumps
21.1 Supply voltage
1 x 200-240 V - 10 %/+ 10 %, 50/60 Hz - 2 %/+ 2 %, PE.
Cable: Max 1.5 mm
2
/ 12 AWG.
Use min. 158 °F (70 °C) copper conductors only.
Recommended fuse size
Motor sizes from 0.5 - 1.5 Hp: Max. 10 A.
Standard as well as quick-blow or slow-blow fuse may be used.
21.2 Overload protection
The overload protection of the E-motor has the same
characteristic as an ordinary motor protector. As an example, the
E-motor can stand an overload of 110 % of I
nom
for 1 min.
21.3 Leakage current
Ground leakage current < 3.5 mA.
The leakage currents are measured in accordance with
EN 61800-5-1.
21.4 Inputs/outputs
Start/stop
External potential-free contact.
Voltage: 5 VDC.
Current: < 5 mA.
Screened cable: 0.5 - 1.5 mm
2
/ 28-16 AWG.
Digital
External potential-free contact.
Voltage: 5 VDC.
Current: < 5 mA.
Screened cable: 0.5 - 1.5 mm
2
/ 28-16 AWG.
Setpoint signals
• Potentiometer
0-10 VDC, 10 k
˖
(via internal voltage supply).
Screened cable: 0.5 - 1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 328 ft.
• Voltage signal
0-10 VDC, R
i
> 50 k
˖
.
Tolerance: + 0 %/- 3 % at maximum voltage signal.
Screened cable: 0.5 - 1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 1640 ft.
• Current signal
DC 0-20 mA/4-20 mA, R
i
= 175
˖
.
Tolerance: + 0 %/- 3 % at maximum current signal.
Screened cable: 0.5 - 1.5 mm
2
/ 28-16 AWG.
Maximum cable length: 1640 ft.
T
M
03
91
23
34
07
Warning
Do not bypass the frequency converter by
connecting the power supply leads to the U, V
and W terminals.
This may cause hazardous situations for
personnel as the high voltage potential of the
power supply may be transferred to touchable
components in the terminal box.
&DXWLRQ
Check the direction of rotation when starting up
after switching to emergency operation.
1RWH
1RWH
Before relubrication, remove the bottom plug in
the motor flange and the plug in the bearing
cover to ensure that old and excess grease can
escape.
Frame size
Quantity of grease
[ounces]
Drive end
(DE)
Non-drive end
(NDE)
MGE 160 .44 .44
MGE 180 .51 .51
DBP-1 - GRUNDFOS PUMP CRE - 99392005