Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 - Manual (Page 283)

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Inspections Section 10-1
10-1 Inspections
Daily or periodic inspections are required in order to maintain the FQM1 in
peak operating condition.
10-1-1 Inspection Points
Although the major components in the FQM1 have an extremely long life time,
they can deteriorate under improper environmental conditions. Periodic
inspections are thus required to ensure that the required condition is being
maintained.
Inspection is recommended at least once every six months to a year, but more
frequent inspections will be necessary in adverse environments.
Take immediate steps to correct the situation if any of the conditions in the fol-
lowing table are not met.
Inspection Points for Periodic Inspections
No. Item Inspection Criteria Action
1 Source Power
Supply Check for voltage fluctuations
at the power supply terminals. The voltage must be within
the allowable voltage fluctu-
ation range.
(See note.) Use a voltage tester to check the
power supply at the terminals. Take
necessary steps to bring voltage
fluctuations within limits.
2 I/O Power Sup-
ply Check for voltage fluctuations
at the I/O terminals. Voltages must be within
specifications for each
Module. Use a voltage tester to check the
power supply at the terminals. Take
necessary steps to bring voltage
fluctuations within limits.
3 Ambient environ-
ment Check the ambient tempera-
ture. (Inside the control panel
if the FQM1 is in a control
panel.) 0 to 55
°C
Use a thermometer to check the
temperature and ensure that the
ambient temperature remains
within the allowed range of 0 to
55
°C.
Check the ambient humidity.
(Inside the control panel if the
FQM1 is in a control panel.) Relative humidity must be
10% to 90% with no con-
densation. Use a hygrometer to check the
humidity and ensure that the ambi-
ent humidity remains within the
allowed range.
In particular, verify that there is no
condensation or icing caused by
sudden temperature changes.
Check that the FQM1 is not in
direct sunlight. Not in direct sunlight Protect the FQM1 if necessary.
Check for accumulation of
dirt, dust, salt, metal filings,
etc. No accumulation Clean and protect the FQM1 if nec-
essary.
Check for water, oil, or chemi-
cal sprays hitting the FQM1. No spray on the FQM1 Clean and protect the FQM1 if nec-
essary.
Check for corrosive or flam-
mable gases in the area of the
FQM1. No corrosive or flammable
gases Check by smell or use a sensor.
Check the level of vibration or
shock. Vibration and shock must
be within specifications. Install cushioning or shock absorb-
ing equipment if necessary.
Check for noise sources near
the FQM1 No significant noise
sources Either separate the FQM1 and
noise source or protect the FQM1.