Dibo JMB-MG Mode D'emploi page 147

13 Maintenance at expense of technicians
For further maintenance we advise to contact your DiBO distributor concerning
a maintenance contract. The maintenance applies to normal company
circumstances. At heavy circumstances you can communicate this so that can
be taken into account. Extra documents:
• Control manual
• Other specific manuals
• CE- certificate
• Other certificates & conformity declarations
• Electrical plan
• Maintenance book
• Certificate trailer
Remarks: It is recommend the preventive maintenance to carry out by a
competent DiBO- service technician according to this maintenance diagram,
to be able to remain use the machine up to maximum and also to be able to
claim the guarantee conditions. To be able to guarantee a good and regular
maintenance, we advise the owner/user at strongest to make an appointment
with DiBO against reaching the given up company hours, concerning a
maintenance turn.
14 Maintenance CNG installation
Leak test: control of the CNG components and circuit can be effected by means
of a gas detection meter, leakage spray or by soapy water. Recommended
recheck is necessary: see also "11 CNG tanks" on page 43 .
• Wait for a minimum of 1 hour.
• Check if there is a pressure drop in the system.
• If the pressure has not dropped, then the system is tight.
• If the pressure is decreased, use a gas detection meter to detect the leak.
Gas leak detection meter; use the meter at a visual control. Always check the
meter and measuring head of proper operation and possible pollution. Set the
meter correctly (methane). The measuring head must be held above the pipes/
conduits and components (natural gas is lighter than air). Start with the accurate
setting. In case of detection switch to the rougher setting to locate the leak
more precisely. Move the measuring head over the system at a rate of 3 to 5
cm per second. Just give the meter time to absorb the natural gas. Take correct
decisions from the signals given by the meter (operating instructions for use of
the detection meter).
Don't forget: closed areas of the system must first be ventilated
(protection cap opened). Consider the filling nipple and its associated
cover. There may still be residual natural gas present from refueling.
Do not use the meter in the vicinity of power live
parts. Turn off the high pressure washer.
DiBO 41
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