YDT-35 Operating and Servicing Manual
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HL066(EN) ISSUE 1, 05/2015
6.1.6
Fluid Change
When handling calibration fluid, guidelines as stated on the safety data sheet in
the appendix must be followed.
Every 3 months or 50 operating hours, whichever is sooner, the test fluid should be changed to
ensure the correct level of cleanliness. If the injectors being tested are excessively dirty the fluid
check must be carried out more frequently and the fluid replaced sooner than the recommended
interval.
The internal Tank/Filter timer will flag up when a change is due.
Refer to Figure 6.4
Figure 6.4 Tank Filter/Drain Valve
1. Place a suitable container under the drain valve (item 1). Open the drain valve and empty
the tank.
2. Close the drain valve and refill the tank with clean fluid as described in section 3.4.
3. Discard the fluid in accordance with local waste disposal regulations.
4. Reset the Fuel Timer from the Settings >> Tank/Filter Timers.
The password to access the timers is 1000.
6.1.7
Fuel Filter Change
When handling calibration fluid, guidelines as stated on the safety data sheet in
the appendix must be followed.
Every 12 months or 100 operating hours, whichever is sooner, the fuel filter should be changed to
ensure correct level of filtration. If the injectors being tested are excessively dirty the filter check must
be carried out more frequently and the fluid filter replaced sooner than the recommended interval.
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