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Wilo FKT 63.1 Einbau- Und Betriebsanleitung Seite 200

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9.6.8
Coolant change
FKT 63.1
180°
Fig. 14: Cooling system: Coolant FKT 50.1, 57,
63.1
200
Maintenance and repair
WARNING
Operating fluid under high pressure!
A pressure of several bar can build up in the motor! This pressure escapes when the
screw plugs are opened. If screw plugs are opened without due caution, they can be
ejected at high speed! To avoid injuries, observe the following instructions:
• Adhere to the prescribed sequence of work steps.
• Unscrew the screw plugs slowly, but never unscrew them completely. As soon
as the pressure escapes (audible whistling or hissing of air), stop turning the
screw plug any further!
• When the pressure has completely dissipated, fully unscrew the screw plugs.
• Wear closed safety goggles.
WARNING
Scalding from hot operating fluids!
Hot operating fluids can also spray out when pressure is released. This can result in
scalding! To avoid injuries, the following instructions must be observed:
• Allow the motor to cool down to the ambient temperature before opening the
screw plugs.
• Wear closed safety goggles or face protection and gloves.
Motor FKT 50.1, 57, 63.1
+
Add/bleed the coolant
-
Drain the coolant
Protective equipment has been put on!
Pump has been dismantled and cleaned (decontaminated if required).
+
1. Place the pump upright on a firm surface.WARNING! Risk of hands being crushed.
Ensure that the pump cannot fall over or slip away!
2. Place a suitable tank to collect the operating fluid.
3. Unscrew the screw plug (+) slowly, but do not unscrew it completely. WARN-
ING! Overpressure in the motor! Stop turning the screw plug further if hissing
or whistling is audible! Wait until the pressure has completely dissipated.
-
4. After the pressure has dissipated, fully unscrew the screw plug (+).
5. Unscrew screw plug (-) and drain the operating fluid. If a shut-off ball cock is in-
stalled on the outlet opening, open the shut-off ball cock.
6. Check the operating fluid: Notify customer service if the operating fluid contains
swarf!
7. If a shut-off ball cock is installed on the outlet opening, close the shut-off ball
cock.
8. Clean the screw plug (-), replace the seal ring and screw it back in. Max. tightening
torque: 8 Nm (5.9 ft·lb)!
9. Pour the new operating fluid in through the hole of the screw plug (+).
⇒ Comply with the specifications for operating fluid type and quantity!
10.Clean the screw plug (+), replace the seal ring and screw it back in. Max. tightening
torque: 8 Nm (5.9 ft·lb)!
WILO SE 2019-01

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Diese Anleitung auch für:

Fkt 50.1Fkt 63.2

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