Personnel Qualifications; Filling And Venting; Checking The Direction Of Rotation - Wilo Atmos TERA-SCH Installation And Operating Instructions Manual

7.1

Personnel qualifications

7.2

Filling and venting

7.3

Checking the direction of rotation

Installation and operating instructions Wilo-Atmos TERA-SCH
Commissioning
CAUTION
Risk of property damage due to condensation formation!
When using the pump in air-conditioning or cooling applications, condensate can
form, which could damage the motor.
• Open the condensate drainage holes in the motor housing at regular intervals and
drain the condensate.
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Electrical work: A qualified electrician must carry out the electrical work.
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Operation/control: Operating personnel must be instructed in the functioning of the
complete system.
NOTICE
The standard version of the Atmos TERA-SCH pump has an air vent valve on the top
of the casing, next to the air cock. The suction line and pump are vented via a suit-
able venting device on the pressure flange of the pump. An optional air vent valve is
available.
WARNING
Risk of personal injury and property damage due to extremely hot or ex-
tremely cold pressurised fluid!
Depending on the temperature of the fluid, when the venting screw is opened com-
pletely, extremely hot or extremely cold fluid in liquid or vapour form may escape or
shoot out at high pressure. Fluid may shoot out at high pressure depending on the
system pressure.
• Make sure the venting screw is in a suitable, secure position.
• Always exercise caution when opening the venting screw.
Procedure for venting systems where the fluid level lies above the suction port of
the pump:
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Open the isolating valve on the pressure side of the pump.
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Slowly open the isolating valve on the suction side of the pump.
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To vent, open the air cock on the top of the pump.
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Close the air cock as soon as fluid escapes at the top of the housing.
Procedure for filling/venting systems with a non-return valve, where the fluid level
lies below the suction port of the pump:
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Close the isolating valve on the pressure side of the pump.
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Open the the isolating valve on the suction side of the pump..
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Fill fluid in via a funnel until the suction line and the pump are completely filled.
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Vent the pump opening the venting cock on the top of the pump.
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Close the air cock as soon as fluid escapes at the top of the casing.
CAUTION
Risk of property damage!
Danger of damage to the pump parts that rely on the fluid supply for lubrication.
• Before checking the direction of rotation and commissioning, the pump must be
filled with fluid and vented.
• Do not operate the pump with the isolating valves closed.
The motor can be placed on the right or left side of the pump. The check of the rota-
tion direction of the motor is a mandatory step in the commissioning procedure of
the pump set! An arrow on top part of the pump housing indicates the correct direction
of rotation.
en
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