ALCO CONTROLS PS3 Serie Instrucciones De Operación

Emerson Electric GmbH & Co. OHG
Heerstr.111 - D 71332 Waiblingen
Tel.: 07151 509-0 - Fax.: -200
For application in refrigeration systems and heat pumps
according to EN 378
!
Safety instructions:
Read installation instructions thoroughly. Failure
•
to comply can result in device failure, system
damage or personal injury.
It is intended for use by persons having the
•
appropriate knowledge and skill.
Before opening any system make sure pressure in
•
system is brought to and remains at atmospheric
pressure.
Ensure supply voltage and current of electric
•
device match rating on
Disconnect supply voltage from system and PS3
before installation or service.
Do not exceed test pressure.
•
Keep temperatures within nominal limits. Switch
•
housing temperature must not exceed 70°C in high
medium temperature applications.
Use pulsation damper and high temperature
•
diaphragm for direct compressor mounted high
pressure applications
Do not apply torsional force to switch housing
•
assembly during assembly (Fig. 4).
Setting:
PS3 Pressure switches are factory preset to a specific
value (see label). Cut-in/cut-out and differential may
not be readjusted by the customer (otherwise product
looses warranty).
Function / Type of switch (see Fig. 1,2 and 3):
Fig. 1: Pressostat with automatic reset
Fig. 2: Low pressure cut-out (manual reset min.)
Fig. 3: High pressure cut-out (manual reset max.)
Cable Color Code: 1 = black, 2 = brown, 4 = blue
PS3 Pressure switches are equipped with a SPDT snap
action contact switching from 1-2 to 1-4 on rising and
from 1-4 to 1-2 on falling pressure. Reaching the
preset switch point contact 1-2 opens and 1-4 closes
(reverse reaching the lower switching point).
PS3 with manual reset (min. or max.):
Reaching the preset switching point contact 1-4 opens
(low pressure switch) or contact 1-2 opens (high
pressure switch) and latches. After the pressure rises
by appr. 1.5 bar (low pressure switch) or drops by
appr. 3...5 bar depending on pressure range (high
pressure switch) the switch can be reset by pushing the
reset button.
Mounting:
PS3 Pressure switches should not be exposed to
pulsations. Use a pulsation damper or a capillary tube
connection ( min. 1m) when pulsations can be
expected.
Mounting direction: any
Pressure connection: see Fig. 4 and 5
= Copper gasket
= Damp cloth
Apply Teflon sealant to adapter thread.
Document Nr.: A6.5.052 / 05
ALCO CONTROLS
Leakage test:
After completion of installation, a test pressure must be
carried out as follows:
- According to EN378 for systems which must comply
with European pressure equipment directive 97/23/EC
- To maximum working pressure of system for other
applications
Warning:
- Failure to do so could result in loss of refrigerant and
personal injury.
- The pressure test must be conducted by skilled
persons with due respect regarding the danger related
to pressure.
Maintenance/Service:
PS3 name plate.
In case of repair work or replacing the control always
use new gasket (
Electrical connection:
Note: Comply with local electrical regulations when
wiring PS3. Wire size must be suitable for electric
device connected to the PS3.
Connection with appliance socket (see Fig 6 and 7):
= Terminal block
= Terminal
= Fasten-screw
= Housing
Standard plug meets requirements of DIN 40050/IEC
529/ EN60529. Plug is equipped with cable gland PG9.
Use proper cable diameter (3,5 to 8 mm).
To maintain IP65, proper installation is mandatory:
• Pull cable through cable gland, washer, insulation
ring and housing.
• Connect wires to the three terminals of the plug
(#1,2,3).
• Pull cable back and insert terminal-block into
housing.
• Insert fasten-screw into the hole on the top of
housing.
• Tighten cable gland. Max. Torque 4 Nm.
• Attach gasket and insert appliance socket on pins.
Fasten screw with max. torque 0,05Nm.
Connection with PS3-Nxx/Lxx:
Plug meets requirements of DIN 40050 / IEC 529 /
EN60529. Plug has an integrated gasket. In case the
connector will only be used to open or close an
electrical circuit the 3
10). Fasten screw with max. torque 0,05Nm. Plug
cannot be repaired, in case of failure replace product.
Only one mounting position is possible.
Cable Color Code: 1 = black, 2 = brown, 4 = blue
Technical data:
• Protection class:
(EN 60529)
• Ambient temperature (housing): -40°C to +70°C
• Storage and transportation temperature:
-40°C to +70°C
• Medium temperature:
Pressure range
1...5/A...E/J...N/S...W
6/F/O/X
• Max. operating pressure: see type code/pressure range
• Design pressure PS:
• Vibration resistance:
Replacement for A6.5.052 / 04
Operating Instructions
Pressure Controls Series PS3
Fig 4).
= Insulation ring
= Washer
= Cable gland
= Gasket
rd
lead has to be cut (see Fig. 9,
IP65 (with PS3-Nxx)
IP00 (w/o appliance socket)
-40°C to +70°C
-40°C to +150°C
see type code/pressure range
4g (10...1000 Hz)
Date: 20.11.2004
• Electrical rating - Standard / Micro-switch:
Inductive (AC15): 3 A / 1.5A @ 230 V AC
Locked rotor (LRA, AC3): 36 A / 15 A @ 230 V AC
• For electronic applications with low electrical loads
(current <100 mA) standard contacts are not suitable.
• Medium compatibility:
• Marking: CE acc. Low Voltage Directive all models,
CE according to PED 97/23/EC: Type approved
0035
models only.
Type code:
! " #
PS3 -
" #
PS3 - X - X X
!
Function
A = Pressure control, automatic
B = Pressure cut out, external manual reset,
type approval, EN 12263, PZL/PZH
R = Pressure control, external manual reset
S = Safety pressure cut out, internal manual reset,
type approval, EN 12263 PZHH
W = Pressure limiter, automatic, type approval,
EN 12263, PSL / PSH
NOTE: Function types B, R or S protect against high
pressure in combination with Pressure Ranges 4, 5, 6 and
against low pressure in combination with Pressure Range
1 and 3.
"
Pressure range Max. allowable Test Pressure
Pressure (PS)
1/A/J/S = -0,6 to 6 bar 27 bar
3/C/L/U = 0,1 to 16 bar 27 bar
4/D/M/V = 6 to 30 bar 31 bar
5/E/N/W = 6 to 30 bar 31 bar
6/F/O/X = 10 to 43 bar 43 bar
NOTE: 1...6 Standard contacts
A...F Gold plated contacts
J...O: Microswitch
S...X: Microswitch gold plated contacts
#
Pressure connection
A = 7/16"-20 UNF male
G = G1/4" female brass
K = 1 m capillary w. flare nut 7/16"-20 UNF
L = 1/4"-ODM solder with 1m capillary tube
R = G1/4" male brass
S = 7/16"-20 UNF female with schraeder opener,
(snubber on range 6/F/O/X only)
U = 6 mm - ODF solder
(snubber on range 6/F/O/X only)
X = 1/4" - ODF solder
(snubber on range 6/F/O/X only)
Function
A = High/-low pressure switch automatic
D = Low pressure switch with external reset
R = High pressure switch with external reset
W = Safety pressure switch automatic, DIN approved
B = Safety pressure cut-out, DIN approved,
external reset
S = Safety pressure cut-out, DIN approved,
internal reset
X = Safety pressure switch, automatic, DIN approved,
high temp.diaphragm
C = Safety pressure cut-out, DIN approved,
external reset,
high temp. diaphragm
T = Safety pressure cut-out DIN approved, int. reset,
high temp. diaphragm
E = High/-low pressure switch automatic,
for ammonia
DWG Nr.: PS3EA6.5.052 Ed 04/PCN 0 716 000
GB
HFC, HCFC
e.g. PS3–W6S
e.g. PS3 - AF1 - HNS
(PT)
30 bar
30 bar
36 bar
36 bar
48 bar