Nikon XT V 160, Operator'S Manual

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Maintenance
52
XTM0011-F2
XT V 160 X-ray System
If the backing pump emits visible fumes, or smells, power off immediately. This
will usually indicate a serious vacuum leak, such as incorrect sealing of the X-ray
source's lid, an open vent valve, or incorrectly fitted turbo pump or vacuum
gauge. Fumes emitted by the pump under these conditions may be harmful, and
should be avoided.
Some parts, especially the vacuum pump, can become hot enough to cause
burns.
Do not attempt to operate the vacuum system unless it is fully connected.
Damage will result if the backing pump is operated with its intake open to
atmosphere. Damage may occur to the turbo pump if its cable is connected or
disconnected whilst the system is powered up.
To check the oil level in the backing pump, follow these steps:
1. Switch off the machine and remove the power supply.
2. Check the oil level in the vacuum pump observation window (3).
1. Pump inlet, 2. Oil inlet plug, 3. Observation window, 4. Oil drain plug
The oil level must be between a quarter and three quarters full. Do not add more oil
beyond the three-quarter mark as this will impair the operation of the pump.
3. If required, remove the oil inlet plug (2) and pour in fresh oil (Vacuubrand B-oil) up to the
maximum mark indicated on the observation window and replace the oil inlet plug.
A one litre bottle of vacuum pump oil may be supplied in the spares kit. Consult the
COSHH data before using this product and take all suitable precautions. Contact Nikon
Metrology if in doubt.
4. Visually check for any signs of contamination, leakage or abrasion of pipes and cables.
Report any damage, and if necessary, do not use machine until these issues have been
resolved.
6.2.3 Check the coolant level
Although the coolant circuit on an X-ray system machine is effectively a sealed system, it is
still possible for the coolant level to drop during normal use due to evaporation and various
other reasons. Check the coolant level each month to ensure that the machine will continue