Function; Safety; Sources Of Danger - Honeywell PCR-100 Installation And Operating Instructions Manual

If the unit is used for purposes other than those stated here,
it shall not be considered to be use for the purpose intended.
Only connect sensors supplied with the unit. If a replacement
sensor is required, only use sensors of the same type
(Part No. H61007 ).
The controller is not intended for use in vehicles because the possi-
ble operating voltage ranges, interference level and environmental
operating exceed the limits for which the controller can be used.
Please take the application limits into account
(see Technical Data in section 11).

3.2 Function

PCR-100 and PCR-110 are general-purpose thermostats, each with
a relay output and wide temperature control range
(–55 °C to +50 °C).
The controllers have different housings:
PCR-100: Modular housing for 35 mm standard rails
PCR-110: "Snap-in" installation housing, which fits into aperture
28.5 x 70.5 mm.
Control performance: 2-step, on/off, with reversible direction for
heating and refrigerating.
Defrost option for chilling systems if continuous operation of the
evaporator fan is foreseen in the switching box.
Easy to operate thanks to digital input of setpoint value and
switching difference.
Data is not lost, even if there is a power failure, for at least
10 years.
Alarm output.

4 Safety

4.1 Sources of danger

Caution - Mains voltage!
Never expose the unit to water or moisture. Risk of malfunction
and short circuit. Only use the unit when it is adjusted to normal
ambient temperature (+15 to. +30 °C). Extreme changes in tempe-
rature in combination with high atmospheric humidity may lead to
the formation of condensed water.
Even if the control circuit is switched off, high voltage may still be
applied to the controller. For this reason, isolate all electric
circuits before starting any service work.
Never expose the unit to excessive heat, dust and vibrations. Avoid
knocks and pressure loads. If the housing is damaged, there is a risk
of an electric shock causing death or injury.
4