Troubleshooting And Possible Solutions - Wilo Drain MTC 32F Serie Einbau- Und Betriebsanleitung

TROUBLESHOOTING AND POSSIBLE SOLUTIONS
conducted by the manufacturer or an authorized
service workshop.
8.4. Repairs
The following repairs can be carried out on these
units:
• Adjusting the cutting gap
• Subsequently installing the sealing chamber elec-
trode for monitoring the oil separation chamber
When carrying out repair work, the following
information should always be observed:
• Round sealing rings as well as existing seals
should always be replaced.
• Screw fasteners (spring rings, Nord-Lock screw
adhesive, Loctite screw adhesive) must always be
replaced.
• The correct torques must be observed.
• Never use brute force during this work.
8.4.1. Adjusting the macerator
Wear to the blade can increase the gap to the
cutting plate. This impairs pumping and cutting
performance. You can adjust the cutting gap to
counteract this.
Adjusting the macerator on the MTC 32F17...F33
Fig. 7.: Adjusting the macerator
1 Blade
2 Cutting plate
1. Loosen and remove the three hex socket screws
(3) that fasten the cutting plate.
2. Turn the cutting plate (2) clockwise until you can
see the three screws (4) for adjusting the height
of the cutting plate through the holes in the
cutting plate (2).
3. Turn the adjusting screws (4) anticlockwise so
that the distance between the cutting plate (2)
and the blade (1) is evenly reduced.
Caution: The blade (1) must not scrape the
cutting plate (2).
4. Then turn back the cutting plate (2) and fasten it
again with the hex socket screws (3).
Adjusting the macerator on the MTC 32F39...
F55
Fig. 8.: Adjusting the macerator
1 Blade
2 Shim
*The blade fastening consists of:
• MTC 32F39: Hex socket screw, spring ring and
cap
• MTC 32F49...F55: Cap nut and washer
1. Block the blade (1) with a suitable tool and loosen
and remove the blade fastening (3).
Installation and operating instructions Wilo-Drain MTC 32
3 Cutting plate fastening
Cutting plate height
4
adjustment
3 Blade fastening*
2. Remove the blade (1).
3. Adjust the gap by removing a shim (2).
4. Put on the blade (1) and attach the blade fasten-
ing (3) again.
5. Check the gap and the blade movement.
6. If the gap is correct, loosen the fastening (3), coat
it with Loctite screw adhesive and firmly tighten
the fastening (3) (MTC 32F39: 8 Nm; MTC 32F49...
F55: 60 Nm).
8.4.2. Subsequently installing the sealing chamber
electrode for the oil separation chamber
To monitor water penetration of the oil separa-
tion chamber, a rod electrode can be installed or a
defective electrode replaced.
The rod electrode is simply screwed into an exist-
ing hole in the seal housing.
Checking the sealing chamber for MTC 32F17...
F33
The rod electrode is screwed into the hole for
draining and filling the oil. Replace the plug with
the rod electrode.
Checking the sealing chamber for MTC 32F39...
F55
The rod electrode is screwed into a separate hole.
This is marked "DKG". Replace the plug with the
rod electrode.
Assembling the sealing chamber monitor
1. Lay the unit horizontally on a firm surface with
the plug facing upwards.
Make sure that the unit cannot fall over and/or
slip away.
2. Slowly and carefully remove the plug.
Caution: The lubricant may be pressurized. This
can force the plug out.
3. Screw in and tighten the rod electrode.
4. The "Electrical connection" section describes how
to connect the sealing chamber monitor.

9. Troubleshooting and possible solutions

In order to prevent damage or injury while recti-
fying product faults, the following points must be
observed in all cases:
• Only attempt to rectify a fault if you have quali-
fied staff. This means that each job must be car-
ried out by trained specialist staff. For example,
electrical work must be performed by a trained
electrician.
• Always secure the product against an accidental
restart by disconnecting it from the mains. Take
appropriate safety precautions.
• Always have a second person on hand to ensure
that the product has been switched off for safety.
• Secure moving parts to prevent injury.
• Unsanctioned changes to the product are made at
the operator's own risk and release the manufac-
turer from any warranty obligations.
English
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