JCB EcoMAX Engine Installation Manual
Page 52 of 64 320/A9164-1 © JCB Power Systems Ltd.
For the fastest defrost times, the line connectors must be straight, heated and heavily
insulated.
The use of PA12 (polyamide 12) is recommended as a suitable material for DEF lines.
Pressure Line (PL)
The maximum height of the dosing module above the supply module is limited as shown in
Figure 16. The maximum height must be correct to make sure the dosing is accurate.
If the dosing module has to be positioned below the supply module, it must be no lower than
1 meter (reference point to reference point) due to the maximum suction head pressure
allowed at the supply module when purging.
Make the dimensions of the siphon so that it can collect any DEF solution remaining in the
pressure line after emptying, preventing the dosing module from filling with solution after
machine shutdown.
Connecting Sequence
The installation of the system must allow for enough space to connect and disconnect
electrical and hydraulic connectors independently. When assembling lines, connect electric
connectors before connecting hydraulic connectors. When disassembling the lines,
disconnect the hydraulic connectors before disconnecting the electric connectors. This is to
prevent DEF coming in to contact with the electrical connectors.
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