March 2021
Page 92 of 143
59812-K007 Rev 17
Business Confidential
To clean a detector: -
1.
With the detector isolated disconnect the cable connector fitted to the top of the Detector Head.
2.
Using a 4mm hexagonal key, loosen the two fixing screws in the Detector Base. The screws are
self-retaining.
3.
Remove and invert the top part of the Detector Head so the Fan is visible.
4.
Wipe off any excess oil from the surface of the base and fan.
5.
Examine the Detector Base unit seal and replace if damaged or perished or not seated firmly in
its channel.
CAUTION: - Do NOT press the fan label, handle only the fan outer housing.
6.
Using the Pulling Tool (see below), slowly remove the Fan Retaining Plug by capturing the
shoulder and pulling. Carefully remove the Fan from its mountings.
Figure 146
Pulling Tool
BEWARE: - Please take extreme care NOT to lose any of the Compression Springs or the
Fan Retaining Plug.
7.
Examine the 4 Compression Springs and the Fan Retaining Plug; replace any damaged items.
Spares for these items are included in the Service Kit, see 6.4.2.
8.
Ensure the fan is free running and not clogged by oil residues.
9.
If fan damage is suspected the fan should be replaced, see section 5.2.6.
Fan Retaining Plug
One Fixing Screw
Содержание Graviner Mk7
Страница 26: ...March 2021 Page 15 of 143 59812 K007 Rev 17 Business Confidential Figure 10 Detector Head Installation ...
Страница 42: ...March 2021 Page 31 of 143 59812 K007 Rev 17 Business Confidential Figure 29 Wiring Drawing ...
Страница 129: ...March 2021 Page 118 of 143 59812 K007 Rev 17 Business Confidential 6 6 1 CONTROL UNIT Figure 182 Control Unit Spares ...
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