Buhler P2 AMEX Series, Installation And Operation Instruction Manual

Page: 21 / 48

P2.x AMEX
6.1 Maintenance schedule
Component Interval in operating hours Work to be performed To be performed by
Pump body screws After 500 h Tighten screws to 3 Nm Customer
Complete pump Every 500 h Check hose connections, protective and control
devices, proper function, dirt.
Replace if damaged or have repaired by Bühler Tech-
nologies.
Customer
Complete pump Every 8000 h or under high
dust load For cleaning the entire pump, see Cleaning the
pump console [> page 21].
Customer
Valves Every 8,000 h or if pressure
drops Check valves, replace valves if necessary,
see Replacing the inlet and outlet valves [>
page 21]
Customer
Bellow Every 4,000 h or 6 months Check by shutting off the suction pipe. Repair if dam-
aged, see
Inspecting the bellow [> page 19] + Repla-
cing bellow and connecting rod-eccentric-combina-
tion
[> page 20].
Customer
Complete pump After 43,800 h or 5 years Inspection by Bühler Technologies GmbH
Item no. see Order number for the 43.800h inspec-
tion [> page 23]
Service technician/
Bühler Technologies
GmbH
Coupling P2.4/P2.84 After 2000 h or 3 months,
then every 4000 h or 6 months
Initial elastomer ring gear inspection, see Inspecting
and replacing the flexible spider Customer
6.2 Inspecting the bellow
NOTICE
When following preventive maintenance according to the maintenance plan, a crack in
the bellows is a rare malfunction, but cannot be completely eliminated.
NOTICE
If the bellow cracked, turn the pump off immediately!
NOTICE
If flammable gases (even above upper explosion limit (UEL)) or toxic gases are supplied,
continuous monitoring of the pump is mandatory.
DANGER Explosion hazard, danger of poisoning!
A crack in the bellows when conveying flammable or poisonous gasses may allow explos-
ive or poisonous gas mixtures to leak or develop.
Monitor the pump with a flow- and/or vacuum monitoring system (see flow diagram).
If a pump defect occurs, shut it off immediately.
Since a crack in the bellow allows the ambient atmosphere to be sucked in and the sample gas pump continues to generate
pressure,
the bellow on the sample gas pump must be inspected regularly
.
This is done by connecting a suitable shut-off unit and a suitable vacuum pressure gauge ahead of the sample gas input (see il-
lustration). If during operation, after closing the suction line, no negative pressure is produced, the bellows is defective and
must be replaced.
Please refer to the Maintenance schedule for maintenance intervals.
19 Bühler Technologies GmbH BE420003 ◦ 08/2021