Wilo 6069866, Инструкция по установке и эксплуатации

Страница: 39 / 191

en Maintenance and repair
32 WILO SE 2017-12
⇒ Comply with the specifications for operating fluid locations and quantity!
8. Clean the screw plug, replace the seal ring and screw it back in. Max. tightening
torque: 8 Nm (5.9 ft lb)!
9.5.7 General overhaul
During the general overhaul, the motor bearings, shaft sealings, O-rings and power
supply cables are checked for wear and damage. Damaged components are replaced
with original parts. This will ensure correct operation.
The general overhaul is performed by the manufacturer or an authorised service centre.
9.6 Repairs
WARNING
Attached macerator: sharp edges on the cutting plate and rotating blade!
The macerator can cause amputation of limbs! Wear safety gloves to protect against
cuts and never reach into the macerator!
WARNING
Hand, foot or eye injuries due to the absence of protective equipment!
Danger of (serious) injuries during work. Wear the following protective equipment:
• Safety gloves for protection against cuts
• Safety shoes
• Closed safety goggles
The following pre-requisites must be fulfilled prior to starting repair work:
▪ Pump cooled down to the ambient temperature.
▪ Pump is switched voltage-free and secured against being activated inadvertently.
▪ Pump cleaned thoroughly and disinfected (if required).
For repair work the following generally applies:
▪ Immediately wipe up drips!
▪ Always replace O-rings, gaskets and screw locking devices!
▪ Observe the tightening torques in the appendix!
▪ Never use force when carrying out this work!
9.6.1 Instructions on using screw lock-
ing devices
All screws are equipped with a screw locking device. There are two different ways to
tighten the screw locking device:
▪ Thread-locking fluid
▪ Mechanical screw locking device
Always replace the screw locking device!
Thread-locking fluid
Medium-strength thread-locking fluid (e.g. Loctite 243) is used for the liquid screw
locking compound. This threadlocker can be loosened with increased force. If the
thread-locking fluid cannot be loosened, then the compound must be heated to ap-
prox. 300 °C (572 °F). Clean the components thoroughly after dismantling.
Mechanical screw locking device
The mechanical screw locking device consists of two Nord-Lock wedge lock washers.
The screw connection is secured by the clamping force. The Nord-Lock screw locking
device must only be used on bolts with strength class 10.9 which have been coated
with Geomet.
The use of stainless screws is prohibited!
9.6.2 Which repair work may be carried
out ▪ Readjusting the cutting gap.
9.6.3 Readjusting the macerator
The gap between cutting plate and blade is approx. 0.1...0.2 mm (0.004...0.008 in). The
blade gap here is set using the shims between the rotating blade and the impeller. If the
gap becomes too great, cutting performance is impaired and clogging increases. In this
case, the gap needs to be readjusted.
Required tools
▪ Torque wrench with size 5 Allen key bit