17 Service and maintenance
112
Madsen Zodiac
Note
•
Calibration should always be performed in a low-noise environment.
The manufacturer is to be considered responsible for effects on safety, reliability, and performance of the equipment only
if:
•
All assembly operations, extensions, re-adjustments, modifications or repairs are carried out by the equipment
manufacturer or personnel authorized by the manufacturer.
•
The electrical installation to which the equipment is connected complies with EN/IEC requirements.
•
The equipment is used in accordance with the instructions for use.
The manufacturer reserves the right to disclaim all responsibility for the operating safety, reliability and performance of
equipment serviced or repaired by other parties.
On request, your supplier can obtain a Service Manual from the manufacturer.
17.3
Maintenance
Madsen Zodiac requires no preventive maintenance. However, it is recommended that you observe the guidelines
described in
Cleaning Madsen Zodiac 114
and
Calibration 112
.
17.3.1
Calibration
The device and the probes are delivered fully calibrated.
•
The device is calibrated from the factory in dB SPL or dB HL using the stated reference equivalent thresholds. dB HL
are related to sound pressure levels, dB SPL = dB re 20
µ
Pa.
•
The probe calibration values are saved in the probe assembly and follows the probe. The probe can be plugged to any
Madsen Zodiac and used right away. This also applies to the contra insert phone.
Probe check
The diagnostic probe and the Quick Check, if supplied, should be checked daily.
See
Probe check 32
.
Additional probe admittance checks can be performed.
If the test environment changes, for instance if there is an increase in humidity or altitude, perform a probe check to
verify that the system measures correctly
Annual calibration
•
The device and probe(s) must be calibrated once a year by your authorized service department.
•
The Quick Check and diagnostic probes should be calibrated at least annually.
17.3.2
Probe admittance calibration
We recommend that you carry out this type of calibration at least once a year.
Note
•
Always clean and disinfect the probe tip before you insert it into a test cavity.
