Maintenance - AUMA SAVEx 07.2 Operation Instructions Manual

Servicing and maintenance
12.3.

Maintenance

Maintenance intervals
Manual operation
Lubrication
Notes relating to main-
tenance
80
SAVEx 07.2 SAVEx16.2/SARVEx 07.2
6. Check whether O-ring [3] is in good condition, replace if damaged.
7. Apply a thin film of non-acidic grease (e.g. petroleum jelly) to the O-ring and
insert it correctly.
8. Replace electrical connection and fasten screws evenly crosswise.
In compliance with EN 60079-17, Ex certified products either require repeated testing
at an interval of 3 years or continuous monitoring by trained personnel.
During maintenance, the mechanical parts of the handwheel activation, in particular
motor coupling and retaining spring, must be checked. Replace the parts in case of
visible wear.
In the factory, the gear housing is filled with grease.
Additional lubrication of the gear housing is not required during operation.
Grease change is performed during maintenance
- Generally after 4 to 6 years for modulating duty.
- Generally after 6 to 8 years if operated frequently (open-close duty).
- Generally after 10 to 12 years if operated infrequently (open-close duty).
We recommend replacing the seals when changing the grease.
Perform visual inspection of actuator and mounted accessories. Ensure that
no outside damage, changes or leakage of grease and oil are visible.
Check actuator for unusual running or grinding noise or vibration which might
be an indication of bearing or gear damage.
Electrical connection cables must be placed properly and in perfect condition.
Thoroughly touch up any possible damage to painting to prevent corrosion.
Original paint in small quantities can be supplied by AUMA.
Cable entries, cable glands, plugs etc. have to be checked for correct tightness
and sealing. Consider torques according to manufacturer's details. If required,
replace the components. Only use components having an own EU type exam-
ination certificate .
Check whether Ex connections are fastened correctly.
Take care of possible discolouration of the terminals and wires. This would in-
dicate an increased temperature.
For Ex housings, pay special attention to a possible collection of water. This
may originate from "breathing" due to severe temperature variations (e. g.
change of night and day), from damaged seals etc. Remove any water immedi-
ately.
The process temperature range must be within the range of the specified ambi-
ent temperature.
Check the flame path gaps of flameproof enclosures for dirt and corrosion.
Since the dimensions of all flameproof joints are strictly defined and inspected,
no mechanical work (such as grinding) shall be performed on them. The joint
surfaces have to be cleaned chemically (e. g. with Esso-Varsol).
Consult manufacturer for indications regarding flameproof joints.
Repair interventions on flameproof joints is not permitted.
Prior to fitting, preserve joint surfaces with an acid-free corrosion protection
agent (e. g. Esso Rust-BAN 397).
Ensure that all housing covers are handled carefully and that the seals are
checked.
All cable and motor protection components have to be checked.
If defects impairing the safety are detected during maintenance, repair measures
have to be initiated without delay.
Any kind of surface coating for the joint surfaces is not permitted.
When replacing parts, sealing elements, etc. only original spare parts shall be
used.
SARVEx16.2 Control unit: electronic (MWG)
ACVExC 01.2 Non-Intrusive