Webasto thermotop C Installation Instructions Manual - Fuel Filter Module
Webasto Part Number : 4110310A
Issue No: 02 : 10th November 2010
Matthew Millard
In the interests of continued development, we reserve the right to change
specifications without prior notice
© Webasto Product UK Limited
Marine Comfort
Fuel Filter module
Servicing
Servicing the fuel filter (if fitted)
Some heater kits are supplied with a filter kit, but not
all. If you do not have a filter and require one the part
number for the approved filter is 4110766A. Please
be aware this is the ONLY Webasto approved filter
for use in a marine application.
The Webasto filter kit has been selected specifically
to be used with this type of heater.
Do not fit any other type of filter as it may have a
detrimental effect on the heaters operation and may
not comply with the relevant standards:
ISO 7840
ISO 10088
Boat Safety Scheme (UK)
Recreational Craft Directive (EU)
The filter is a combined water trap, 44 micron
washable filter element and a fuel isolator.
To service the fuel filter proceed as follows.
1
Shut down the heater and isolate the
electricity supply by removing the fuse.
2
Turn OFF the fuel tap on top of the filter
module by turning the round knob fully
clockwise.
3
Place a cloth under the filter to catch any
spillages and unscrew the filter bottom by
holding the filter top section with one hand and
with the other hand unscrewing the bottom
section. Do not use any tools or the unit may
be damaged!
4
With the filter bottom removed carefully
remove the gauze filter element and the flat
rubber washer. Place the rubber washer to
one side.
5
Discard the contents of the filter bowl taking
care not to loose the small 15mm ‘O’ ring in
the base.
6
Clean the gauze element in a bowl of fresh
fuel or paraffin.
7
Re-assemble the filter ensuring the 15mm ‘O’
ring is in the bottom of the filter bowl and
check the flat rubber washer is placed on top
of the filter element.
8
Fill the bowl with fuel and hold the filter head
steady with one hand and screw the filter bowl
back on to the filter head and tighten only
hand tight.
9
Open the fuel tap on top of the filter module by
turning fully anti-clockwise and restart the
heater.
10
The heater may need to go through a few start
attempts as a small amount of air will have
been inducted into the supply line.
11
If during this initial start-up period the heater
fails to start and ‘locks-out’ remove the main
fuse and wait 30 seconds and then re-insert
the fuse and switch the heater on again.
12
The heater will eventually start-up when all the
air has been pushed out of the supply line but
be aware that the pump only delivers 0.063ml
of fuel on each pump stroke so this may take
some time.
Visit www.butlertechnik.com for more technical information and downloads.
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