Xylem Bell & Gossett Ecocirc XL Installation, Operation And Maintenance Manual page 9

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3
Figure 2: Change the position of the pump head
1. Loosen the four hex-head screws (2) that fix the motor to the
pump housing (4) using the T-handle allen wrench described.
2. Rotate the motor (1) in 90° steps to the desired position.
3. In case of separation of the motor housing from the pump body
(4):
a) avoid removing the rotating assembly from motor housing;
b) pay attention to the magnetic hazard listed before.
A defective O-ring must be replaced. An O-ring is already availa-
ble inside the package as spare part.
4. Properly align and tighten the four hex-head screws (2) that affix
the motor to the pump body (4) according to the torque table giv-
en below in a criss cross pattern.
Nominal HP Screw size
1/12 & 1/6 M6
1/2 M8
1 & 2 M10
CAUTION:
Check for the presence of leaks after reassembling the
pump.
4.7 Electrical installation
Precautions
WARNING:
• Make sure that all connections are performed by a quali-
fied electrician in accordance with all applicable codes,
ordinances and good practices. Failure to follow these
instructions could result in serious injury, death and/or
property damage.
• Before starting work on the unit, make sure that the unit
and the control panel are isolated from the power sup-
ply and cannot be energized.
Grounding (earthing)
WARNING:
Reduced risk of electric shock during operation of this pump
requires the provision of acceptable grounding.
Be sure the following are adhered to. Failure to follow these instruc-
tions could result in serious personal injury, death, and/or property
damage.
• If means of connection to the supply connection box (wiring com-
partment) is other than grounded metal conduit, ground the
pump back to service using a copper conductor at least the size of
the circuit conductors supplying the pump.
• Connect the ground wire to the green grounding terminal in the
wiring compartment.
ecocirc ® XL Installation, Operation, and Maintenance manual
6 5
2
Torque
90 in-lb
170 in-lb
340 in-lb
The number of ON/OFF power cycles for the pump must be less than 3
times per hour and less than 20/24 hours. If more frequent start/stop
cycles are required, the use of a dedicated start/stop input is recom-
mended. See External start/stop
4.7.1 Power supply connection
WARNING:
Do not make any connection in the pump control box unless
the power supply has been switched off for at least 2 mi-
nutes.
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For models with standard terminal block connection:
1. Open the terminal box cover removing the screws (5).
2. Thread the ½" NPT electrical fitting into the conduit connection of
the pump.
3. Connect the cable according to the wiring diagram.
a. Connect the ground wire, if used.
b. Connect the wires.
4. Close the terminal box cover.
L L
1
115V
208-230V
L N
2
Figure 3: Wiring diagram
CAUTION:
If stranded wire is used to connect power to the pump, make
sure that all the individual strands enter the terminal block as
the wire is inserted. Peeled back strands can cause a short
circuit hazard at the pump terminal block connections.
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Figure 4: Connection diagram
For cable terminations, see above connection diagram.
(page 9).
CB
2 3 4 5 6 7 8 9 10 11 12 13 14
NO 15V S+S- P+ P- T+ T-
L N C
4 Installation
1
2
3
15 16 17 18 19 20
GND
B A GND B A
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