● Disconnect the power cable from all sources of power before working on the product.
● Wait 5 minutes after powering off before working on the electrical components.
● Circuits pressurized with nitrogen are potentially hazardous; always lock out these circuits using
the LO/TO Lock Out/Tag Out procedure before working on the product.
● Route and secure cables, hoses and pipework to guard against falls.
● Collect the residues from the processes and call in a competent organization to dispose of them.
● Always protect the inlet and exhaust flange surfaces.
7.2 Maintenance frequency
Operation
Frequency
ACP 28 - 40
Pump overhaul by the Pfeiffer Vacuum serv-
ice center
22,000 hours or 4 years
All versions
External silencer draining (see chapter “On-
site maintenance”)
according to the external silencer
saturation
CV version only
Maintenance frequencies are typical values for non-corrosive applications. For applications using G and
CV pump versions, these values can be reduced. Contact our service center
tions from Pfeiffer Vacuum”, page 43)
.
No maintenance is generally required before product overhaul in a service center
.
How to contact us
Product overhauls must be carried out by personnel with manufacturer training.
Contact our nearest service center at the following e-mail address:
Life-time
Under normal operating conditions (at ambient temperature, low humidity and neutral pumped gas), in a
non-polluted environment, a new pump which is regularly maintained according to the instructions in
this manual (subject to the components becoming obsolete)
has a lifetime greater than 10 years
.
7.3 On-site maintenance
The pump does not require any maintenance on the customer’s premises other than the day-to-day
servicing described in this manual. Any other maintenance operation must be carried out by our service
center
(see chapter “Service solutions from Pfeiffer Vacuum”, page 43)
.
► Clean the outer surfaces of the product using a clean, lint-free cloth and a product that will not
damage the screen-printed surfaces and adhesive labels.
► Remove dust from the air ventilation grids with a cloth. Do not use a compressed air blower.
Cleaning the inlet filter
The ACP 28 and ACP 40 models are fitted with a filter in the inlet flange. Check the cleanliness of this
filter regularly.
1. Disconnect the pump inlet from the pumping line and remove the conical filter.
2. Wash the filter with industrial solvent.
3. Dry it before refitting.
IN
2
Maintenance
37/56
Summary of Contents for ACP 28 CP
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