Fridgewatch 2100 Controller Mk4
Section 3
Publication 3-58
Issue 1.1 : 01/08
Page 11 of 152
2.2. Electrical
Interference
To avoid problems of electrical interference, all low voltage wiring
(transducers, data communications and 24 V dc) must be adequately
separated from higher voltage ac wiring (110 V, 240 V, 415 V or higher).
A separation of 150 mm is desirable but not always achievable within
control panels. Low voltage and higher voltage cables should cross at
right-angles.
2.3. Prolonged
Storage
If the Fridgewatch Controller, or the plant of which it forms a part, is not to
be installed immediately but held in store, observe the following points:
•
The Fridgewatch Controller should preferably be stored
indoors, in a well ventilated, clean, warm and dry
environment. If the equipment is stored outside, protection
from the elements must be provided; coverings should be
selected and arranged to reduce the risk of condensation.
•
Fridgewatch contains programmed integrated circuits
(memory chips) which are sensitive to low temperatures.
The controller should not be exposed to ambient
temperatures below -10
°
C.
3.
Personnel Permitted to Install, Commission and Maintain Fridgewatch
It is essential that only authorised and competent personnel are allowed
to install, commission and maintain the Fridgewatch Controller. A permit
to work system should be introduced before commissioning begins, and
should be rigorously enforced thereafter.
Any person rendering assistance or under training must be supervised by
the authorised competent person who has responsibility for safety.
Personnel must be familiar with the plant’s construction, operation and
the hazards involved.
All
personnel should make a thorough study of
these instructions before undertaking installation, commissioning,
maintenance or repair procedures.
