PSK201
Digital Thermostats for Medium Temperature Refrigerating Units
INSTALLATION ANd OPERATING INSTRUCTIONS
1 GETTING STARTED
1.1 Important
Read these instructions carefully before installing and operating
this controller and follow all addtional information for installation
and electrical connection. Keep this guide for future reference.
1.2 Installing the controller
Additional information for installation:
• 59.0 mm (2.322 in) is the maximum depth with screw terminal
blocks
• 83.0 mm (3.267 in) is the maximum depth with extractable terminal
blocks
• the panel thickness must not be greater than 8.0 mm (0.314 in)
• working conditions (working temperature, humidity, etc.) must be
between the limits indicated in the technical data
• do not install the controller close to heat sources (heaters, hot air
ducts, etc.), devices containing large magnets, locations subject to
direct sunlight, moisture, humidity, dust, mechanical vibrations
or shocks
59.0 (2.322)
83.0 (3.267)
75.0 (2.952)
33.0
(1.299)
panel cut out
A
B
Size - mm (inches)
Installation - Panel mounting, with click brackets (supplied by the builder).
dimension
Minimum
Typical
Maximum
mm inches mm inches mm inches
A
71.0
2.79
71.0
2.79
71.8
2.82
B
29.0
1.14
29.0
1.14
29.8
1.17
Electrical Connection
PSK201
• according to safety regulations, protection against access to electrical
parts must be ensured by a correct installation of the controller; the
parts that ensure this protection must be installed so that they can not
be removed without the use of a tool.
1.3 Wiring diagram
Additional information for electrical connection:
• do not use electric or pneumatic screwdrivers/wrenches on the
terminal block connections
• if the controller has been moved from a cold location to a warm one,
condensation can occur on the inside of the unit causing unsafe or
unreliable operation; wait at least one hour before attempting to
power up and use the controller
• make sure that the supply voltage and frequency are correct for the
power supply of the controller
• always disconnect power from the controller before servicing it
• this controller is not intended to be used as a safety control device
• for servicing or repair, please contact your Parker Sporlan Sales
Engineer.
2 USER INTERFACE
2.1 Turning on/off the controller
The unit is turned on when power is supplied to it, and likewise turns
off when power is removed.
2.2 The display
When the unit is turned on during normal operation the display will
show the cabinet temperature.
2.3 Activating the defrost by hand
• make sure no procedure is running
• press and hold
for 4 seconds.
electric
system
1 2 3 4 5
10 11
K1
power
supply
comp.
cabinet
max. 10
A
PSK201
September 2012 / Bulletin 100-50-6.1
