BUSCH MINK MM 1102 BV, Инструкция по эксплуатации

Страница: 14 / 56

MM 1104, 1144, 1102, 1142 B V ATEX-Version, Gas Tight
page 14
0870141675 /
190709
•
Remove the eye bolt (h, 615)
•
Remove the lid (424)
•
Remove the screw plugs of the pressure relief lines and
connect the pressurised air lines (
➔
illustration)
•
Apply 0.2 barg to the pressure relief lines (r)
•
Check that both pressure relief lines (r) pass the pressurised air
In case one or both pressure relief line(s) is/are clogged:
♦ Remove the vacuum pump from service and have it
repaired (Busch service)
♦ Reconnect the collecting line to the gas discharge (q) and
to the pressure relief lines
♦ Reinsert the screw plugs, remount the lid (424) and the
eyebolt (h, 615)
Every 20000 Operating Hours, At the Latest after
6 Years:
•
Have a major overhaul on the vacuum pump (Busch service)
Checking the Function of the
Measurement and Safety Instrumentation
(version with temperature monitoring only)
•
Make sure that the vacuum pump aspirates inert gases and
that there are no potentially explosive atmospheres in the
environment
•
Open the lid of the temperature measurement system (g)
•
Disconnect the white cable from pin 3, the first red cable from
pin 5 and the second red cable from pin 6
•
In order to simulate the resistance thermometer Pt100 set a
variable ohmic resistance to approx. 100
Ω
•
Connect the variable ohmic resistance with 3 identical cables
to the pins 3, 5 and 6 of the temperature transmitter as shown
in the sketch (the cable connected to pin 5 compensates the
cable resistance)
•
Switch on the vacuum pump
•
Increase the ohmic resistance to the resistance at shutdown
temperature according to the Equipment Documentation
Measurement and Safety Instrumentation (
➔
page 20)
•
Make sure that an alarm is released in the system control and
the vacuum pump is shut down automatically
•
Decrease the ohmic resistance to a value less than the
shutdown point
•
Make sure that the alarm persists
•
Make sure that the vacuum pump does not start self-acting
•
Switch on the vacuum pump again
•
Interrupt the ohmic resistance
•
Make sure that a fault indication is released in the system
control and the vacuum pump is shut down automatically
•
Reconnect the variable ohmic resistance
•
Switch on the vacuum pump again
•
Short circuit the variable ohmic resistance
•
Make sure that a fault indication is released in the system
control and the vacuum pump is shut down automatically
•
Remove the short circuit
•
Remove the variable ohmic resistance
CAUTION
Pressurised air supply systems supply a too high pressure.
Risk of damage to the vacuum pump.
Adjust the pressurised air to 0.2 barg by means of a pressure
regulator.
WARNING
Risk of electrical shock, risk of damage to equipment.
Electrical installation work must only be executed by
qualified personnel that knows and observes the following
regulations:
- IEC 364 or CENELEC HD 384 or DIN VDE 0100,
respectively,
- IEC-Report 664 or DIN VDE 0110,
- BGV A2 (VBG 4) or corresponding national accident
prevention regulation.