Operation
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GA01212_002_C1 - 04/2017 - © Leybold
4.3.3 Operating temperatures
Proper operation of the TRIVAC D 16 B Ex is ensured in the ambient tem-
perature range between 12 °C to 40 °C (55 °F to 104 °F).
At operating temperature, the surface temperature of the pump may lie over
70 °C (156 °F).
Beware of hot surfaces
There is the danger of receiving burns.
Observe Safety Information 0.3.
If – due to the ambient conditions – this temperature range is exceeded at
either end of the range, contact Leybold Sales.
The motor may accelerate with a delay when simultaneously an undervoltage
is present at the motor and the pump is at the minimum permissible and
ambient temperature.
Under such operating conditions the motor protection switch may respond.
In this case the motor may be started again.
4.4 Switching off / shutdown
If the TRIVAC D 16 B Ex pump was exposed to aggressive and corrosive
media, we recommend that you let the pump continue to operate even dur-
ing long non-working intervals (e.g. overnight) with the intake line closed and
the gas ballast valve open. This avoids corrosion during idle periods and diffi-
culties when re-starting the pump under conditions where the lubricant has
been chemically modified.
When pumping condensable media, leave the pump to operate with the
gas ballast valve open and the intake line closed before switching off the
pump (see Section 4.3.2).
If the TRIVAC D 16 B Ex running with mineral oil is to be shutdown for an
extended period after pumping aggressive or corrosive media or if the pump
has to be stored, proceed as follows:
Pump and operating agents may be contaminated
If hazardous substances have been pumped, then these substances can
escape from the pump and from the oil. Introduce adequate safety pre-
cautions; use gloves, face protection or a respirator, for example.
Observe Safety Information 0.4.
CAUTION
NOTICE
WARNING
