Danfoss 060R9769 User manual

Refrigeration and Air Conditioning Controls DKRCCPICD0A122
Instructions
060R9769
060R9769
Product Specication
KPU Temperature Controls
Application
KPU temperature controls are used for regulation and to ensure
safety in refrigeration, freezing, air conditioning, ventilating and
heating systems.
KPU temperature controls are available with vapor charge or with
adsorption charge.
All KPU temperature controls are tted with Single-Pole Double-
Throw (SPDT) switches.
For large ac motors and for all dc motors, KPU is installed in the
control circuit. For single phase ac motors, KPU is installed in the
line voltage supply to the motor.
The standard KPU enclosure is rated NEMA 1. NEMA 2 is obtained
when the control is mounted on a at surface. When mounting
KPU on a bracket, cover all unused holes.
Charge Type Code no. Bulb type
Capillary
tube length
[in.]
Reset
function
Regulating
range
[F˚]
Dierential
t
[°F]
Max. bulb
temperature
°F
Ambient
temperature
°F
Vapor
KPU 61 060L5201 A 80 auto. 20 →60 4 →18**
250
40→122
(170 for max.
2 hours)
KPU 61 060L5202 A 200 auto. 20 →60 4 →18**
KPU 61 060L5203 B 80 auto. 20 →60 4 →18**
KPU 61B 060L5204 B 80 man. (MIN)* 20 →60 5 (xed)**
KPU 61B 060L5205 B 200 man. (MIN)* 20 →60 5 (xed)**
KPU 61 060L5210 B 80 auto. 20 →60 4 →18**
KPU 62 060L5206 C1 0 auto. 20 →60 4 →18**
KPU 63 060L5213 A 80 auto. 60 →15 10 →25**
KPU 63 060L5214 B 80 auto. 60 →15 10 →25**
KPU 68 060L5215 C1 0 auto. 25 →95 5 →22**
KPU 69 060L5217 B 80 auto. 25 →95 5 →22**
Adsorption
KPU 62 060L5207 C2 0 auto. 20 →60 4 →15
175
KPU 73 060L5208 E3 80 auto. 15 →60 5 → 35
KPU 73 060L5209 E1 80 auto. 15 →60 15 →45
KPU 73B 060L5211 E3 80 man. (MIN)* 15 →60 6 (xed)
KPU 73 060L5212 D 80 auto. 15 →60 5 →35
KPU 71 060L5218 E2 80 auto. 25 →70 5 →18
KPU 71B 060L5216 E2 80 man. (MIN)* 25 →70 5 (xed)
KPU 74 060L5219 E1 80 auto. 0 →80 9 →35
KPU 74B 060L5220 E1 80 man. (MIN)* 0 →80 10 (xed)
KPU 75 060L5221 F 80 auto. 30 →95 5 →18 230
KPU 75 060L5222 E2 80 auto. 30 →95 5 →18
KPU 77 060L5223 E3 80 auto. 60 →140 6 →18 265
* man.(MIN): Manual reset after cut-out on falling temperature
** The switch dierential is dependent on range settings. Low range settings increases the dierential. High range settings decreases the
dierential. Use the graphs on page 3 to determine the correct dierential setting.
Thermostat bulb types
ABCDE F
straight capillary tube remote air coil air coil/ room sensor double contact remote coil remote bulb remote duct coil

2 DKRCCPICD0A122
Installation
Select an accessible location, where the control will not be subject
to damage.
Mount the KPU on a bracket or on a completely at surface.
Mounting on an uneven surface may cause incorrect control
operation.
For bracket mounting, use only the 10-32 x 3/16 inch screws
furnished with the control. Other screws may interfere with the
functioning of the control. In no case can screws protrude more
than 1/8” into the control.
AC1 AC3 AC15 LR DC13
16 A 16 A 10A 112 A 12 W
400 V 220 V
Screws for bracket
mounting
Mounting holes
for at surfaces
6) Ensure minimal length of capillary tube exposed to temperature
for KPU with straight capillary bulb type:
−16 in. for KPU temperature controls with 80 in. capillary tube
−22 in. for KPU temperature controls with 200 in. capillary tube
7) For temperature controls with room sensor coils, make sure that
placement allows free airow around the coil and bulb. At the
same time, ensure that the bulb is not exposed to drafts from
doors, or to heat radiated from the evaporator surface.
Make sure that the bulb does not come into contact with a wall
surface.
Never mount the temperature control directly on a cold wall.
Instead, mount the unit on an insulating plate.
IMPORTANT:
Do not dent or deform the bulb of the temperature control,
as doing so could damage the bulb and cause charge
leakage.
Wiring
The terminal block as well as grounding screw are accessible after
dismounting the front cover.
CAUTION:
To avoid the possibility of electric shock and damage to
equipment, diconnect the power supply before any wiring
connections are made.
Never touch current conducting (LIVE) parts with your ngers
or with tools.
NOTE:
All wiring should conform to the National Electrical Code and
to applicable local regulations.
Use only copper wire.
Use only the terminal screws furnished in the terminal block.
Do not exceed tightening torque of 20 inch pounds (2.3 Nm).
Do not exceed the control’s specied electrical ratings.
Electrical ratings according to UL regulations
European electrical ratings according to EN 60947
120 V a.c. 24 FLA, 144 LRA - make only
240 V a.c. 24 FLA, 144 LRA - make only
240 V d.c. 12 W pilot duty
Use only the mounting holes provided. Do not make additional
holes.
IMPORTANT:
For vapor charged temperature controls, ensure that
the bulb is installed in a colder location than the control
housing and capillary tube. This prevents charge migration
from the bulb and ambient temperature will have no eect
on regulation accuracy.
For adsorption charged temperature controls, the bulb can be
placed in a warmer or colder location than the control housing
and capillary tube.
General recommendations for capillary tube and bulb
installation:
1) Protect the capillary tube from damage due to vibration.
a.When the control unit is mounted directly on the compressor,
the capillary tube must be secured to the compressor so that
both vibrate together.
b.For mounting otherwise, form surplus capillary tube into a
loose loop, and secure the length of capillary tube between
the compressor and the loop to the compressor. Secure the
length from the loop to the thermostat to the base on which
the thermostat is mounted.
2) Leave a little slack in the capillary tube to help dampen
vibration.
3) Avoid sharp bends and bending the capillary tube at the same
point several times, as these actions can weaken the
material and increase the likelihood of the tube cracking
4) Form and locate the capillary tube away from sharp or abrasive
objects that might damage it.
5) Never allow the capillary tube of a vapor charged temperature
control to run alongside of a suction line in a wall entry.

DKRCCPICD0A122 3
Wiring Option A: Cut-Out on temperature fall Wiring Option B: Cut-Out on temperature rise
LOAD ∼ LINE ∼ LINE
LOAD
Wire dimensions: 10 AWG max.
Cable entry: 7/8” cable entry for ½”male pipe thread connection
(conduit boss) or similar (Pg13.5 or Pg16) screwed cable entry.
Contact function test (Manual trip)
When the electrical leads are connected the contact function can
be manually tested regardless of temperature conditions in the
system.
The manual trip lever is located in the left side of the KPU. It must
be operated with ngers only. Do not use screwdriver as it will
damage the control.
Manual trip.
Push the lever.
Use ngers only !
manual reset button (only
on versions sold with
manual reset function)
grounding screw
terminal block
Determination of dierential
For KPU controls with vapor charge and automatic reset, use the
following graphs to determine the correct dierential.
NOTE:
While operating the manual trip on KPU controls with
manual reset it is necessary to push the reset knob.
Example:
HSP = +45°F DIFF (from graph):
LSP = +32°F => 13°F (value which has to be set on
di. scale)
LSP
HSP
LSP
HSP
HSP
LSP

4 ©Danfoss A/S, IC-MC-mr, 11-2005 DKRCCPICD0A122
Adjustment
NOTE:
Adjust the temperature control to settings specied by
the manufacturer of the controlled equipment. When
checking temperature control operation, or operating the
controlled equipment, do not exceed the manufacturer’s
temperature ratings for the controlled equipment or for
any of its components.
To avoid inaccurate control operation, do not adjust the
KPU’s pointers beyond the highest or lowest indicator
marks on the scale plate.
Before adjustment loosen the locking screw.
For setting use Universal Refrigeration Wrench or the setting knob,
if available.
Movement of the setting knob is limited by the locking screw,
which allows only small corrections to the settings. Therefore, if
the setting knob is to be used for adjustments, completely remove
the locking screw. After adjustment, tighten the locking screw.
Adjustment: Temperature Control with automatic reset
Scale plate directly indicates High Switching Point and
Dierential.
3. Low Switching Point is equal to High Switching Point less
Dierential: LOW = HIGH - DIFFERENTIAL
Dierential adjusting
screw
Setting knob
Locking screw
Range adjusting
screw
Cover screw
1. Set High
Switching Point
by adjusting
range screw.
Turn the screw
clockwise to
lower the set
point.
2. Then set
Dierential by
adjusting
dierential screw.
Turn the screw
clockwise to in-
crease Dierential.
Adjustment: Temperature Control with manual reset
Scale plate directly indicates Low Switching Point, which is
Cut-Out. There is no pointer for Dierential.
Dierential value is xed and printed on the scale plate.
1. Set Cut-Out
(Low Switching Point) by
adjusting range screw.
Turn the screw clockwise
to lower the set point.
2. High Switching Point (Cut-In) equals Low Switching Point
(Cut-Out) plus Dierential:
CUT IN = CUT OUT + DIFFERENTIAL
IMPORTANT:
The scale plate is only for reference and for more precise
setting a temperature gauge should be used.
IMPORTANT:
After installing and adjusting the temperature control,
check your settings by running the controlled equipment
several times (at least three times) under normal operating
conditions.
Manual switch
Available only on KPU61 (060L5210) and KPU62 (060L5207), the
manual switch is a two-position switch used to shut down the
refrigeration system. The two positions are:
1) AUTO: position for automatic operation
2) STOP: contacts 1 and 2 are locked in the closed position.
CAUTION:
The manual switch only stops automatic operation, and can
only be used for service on non-electrical parts. Interrupt
mains power before servicing electrical parts.
manual
switch