Xylem Bell & Gossett ecocirc XL Series Instruction Manual page 8

4.6 Change the position of the motor
housing
WARNING:
• Drain the system if possible or close the service valves on
both sides of the pump before disassembling the pump.
The pumped fluid can be pressurized and may be scald-
ing hot.
• There is the risk of escaping vapor when the motor is sep-
arated from the pump housing.
Electrical Hazard:
Before starting work on the unit, make sure that the unit and
the control panel are isolated from the power supply and
cannot be energized.
CAUTION:
Burn hazard. During operation various surfaces on the unit
will become hot. To avoid burn injury, use heat protective
gloves.
WARNING:
• A strong magnetic field is created when the rotor is re-
moved from or inserted into the motor housing. This mag-
netic field can be harmful to pacemaker wearers and oth-
ers with medical implants. In addition, the magnetic field
may attract metal parts to the rotor which can cause inju-
ries and/or damage the bearing of the pump.
4
3
Figure 2: Change the position of the pump head for 1 PH
4
3
Figure 3: Change the position of the pump head for 3 PH
ecocirc ® XL INSTRUCTION MANUAL
6
5
2
6 5
2
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) note the magnetic hazard listed above.
A defective O-ring must be replaced. A spare O-ring is already
available inside the package.
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 given be-
low in a criss cross pattern.
Nominal HP
1/12 & 1/6
1/2
1 & 2
3
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 in-
structions 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 supply
and cannot be energized.
Grounding (earthing)
1
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 cir-
cuit conductors supplying the pump.
• Connect the ground wire to the green grounding terminal in the
wiring compartment.
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.
1
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 power wiring.
4. Close the terminal box cover.
Screw size Torque
M6 90 in-lb
M8 170 in-lb
M10 340 in-lb
M10 340 in-lb
on page 10.
4 Installation
7