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Compressors

For Refrigeration & Air-Conditioning Controllers, we offer two product lines:

  • Sub zero: Digital controls for temperature, humidity and pressure
  • Castle: Level controllers, shut off valves, solenoid valves, ball valves and other accessories

Sub zero Products

  • 5a. Temperature Indicators
  • 5b. Temperature Controllers (with 10/20A Relay)
  • 5c. Temperature Controllers (with Digital Input / Buzzer)
  • 5d. Antifreeze Controller
  • 5e. Defrost / Air Dryer Controller
  • 5f. Two Comp./ Differential Controller
  • 5g. Temperature Controller with Alarm Output
  • 5h. Humidity & Temperature Controller
  • 5i. Cold Room Controller
  • 5j. Chiller Controller

5a. Temperature Indicators

1. SZ 7505P

Tempressor Indicator


Main Features Temperature Indicator with keypad calibration.
Input & Output Temp. Sensor Input : 1 NTC.
Application General appliances like freezer & display cabinet.
General
Specification
Temperature range -50°C to +99°C.
230VAC Standard. Other models with 12VDC, 110VAC
on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5mm2 wire.

5b. Temperature Controllers (with 10/20A Relay)

1. SZ 7510E / 7569E

Tempressor Indicator


Main Features Cooling output.
Memory retention, time delay for compressor protection.
Auto operation incase of sensor error.
Input & Output Relay output : SZ-7510E - 8(3)A / SZ-7569E - 20A
(Inductive).
Temp. Sensor Input : 1 NTC
Application General appliances like deep freezers, display cabinet,
pastry cabinet.
General
Specification
Temperature range -50°C to +50°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.
Spade terminals for compressors. (For SZ-7569-E only).


2. SZ 7510P / 7569P

Tempressor Indicator


Main Features Cooling & Heating output.
Memory retention, time delay for compressor protection.
Auto operation incase of sensor error.
Power switch.
Input & Output Relay output :SZ-7510P - 8(3)A / SZ-7569P - 20A
(Inductive).
Temp. Sensor Input : NTC.
Application General appliances like deep freezers, chiller machines,
display cabinet,
pastry cabinet, steam bath systems.
General
Specification
Temperature range -50°C to +99°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.
Spade terminals for compressors. (For SZ-7569-P only).

5c. Temperature Controllers (with Digital Input / Buzzer)

1. SZ 7510P-DI

Tempressor Indicator


Main Features Cooling & Heating output.
Memory retention, time delay for compressor protection.
Auto operation incase of sensor error.
Power switch.
Digital input (HP, LP, OSS, Phase Loss).
Input & Output Relay output : 8(3)A.
Temp. Sensor Input : 1 NTC.
Application Chiller machines & similar applications.
General
Specification
Temperature range -50°C to +99°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71mm Screw terminals : Admit 1X
2.5 mm2 wire.


2. SZ 7515P (with Buzzer)

Tempressor Indicator


in Features Cooling & Heating output.
Memory retention, time delay for compressor protection.
Auto operation incase of sensor error.
Buzzer output.
Input & Output Relay output : 8(3)A.
Buzzer output :10VDC, 10mA Max.
Temp. Sensor Input : 1 NTC.
Application General purpose like chiller machines, lab equipments,
display cabinets.
General
Specification
Temperature range -50°C to 99°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.

5d. Antifreeze Controller

1. SZ 7512P (manual reset)

Tempressor Indicator


Main Features Switch off compressor at setpoint.
Manual reset is required to re-start.
Buzzer output on achieving antifreeze set point.
Input & Output Relay output : 8 (3)A.
Buzzer output :10VDC, 10mA Max.
Temp. Sensor Input : 1 NTC with ½’’ BSP connection.
Application Chiller machines.
General
Specification
Temperature range -50°C to +50°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm. Screw terminals : Admit 1X
2.5 mm2 wire.


2. SZ 7514P (antifreeze & temperature controller)

Tempressor Indicator


Main Features Switch off compressor at setpoint.
Switch off compressor at AF setpoint if it has gone beyond
main setpoint.
Manual reset is required to re-start.
Buzzer output on acheiving antifreeze set point.
Input & Output Relay output : 8 (3)A.
Buzzer output :10VDC, 10mA Max.
Temp. Sensor Input : 1 NTC with ½’’ BSP connection.
Application Chiller machines.
General
Specification
Temperature range -50°C to 50°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.

5e. Defrost / Air Dryer Controller

1. SZ 7520P (time based defrost)

Tempressor Indicator


Main Features Cooling output & Time based Defrost.
Memory retention, time delay for compressor protection.
Auto operation incase of sensor error.
Input & Output Relay output : 8(3)A.
Temp. Sensor Input : 1 NTC.
Application Freezers.
General
Specification
Temperature range -50°C to +99°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.


2. SZ 7521P (for Air Dryers / Freezers)

Tempressor Indicator


Main Features Cooling output & Time based Defrost.
Memory retention, time delay for compressor protection.
Auto operation incase of sensor error.
Time based signal for auto drain valve.
Defrost time / Drain valve signal selectable in minutes
& seconds.
Input & Output Relay output : 8(3)A for cooling.
Relay output : 5A for Heater, Hotgas and Auto Drain Valve.
Temp. Sensor Input : 1 NTC.
Application Air dryer & freezers.
General
Specification
Temperature range -50°C to 99°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm. Screw terminals : Admit 1X
2.5 mm2 wire.


3. SZ 7529P (time based defrost controller with 20A relay)

Tempressor Indicator


Main Features Cooling output & Time based Defrost.
Memory retention, time delay for compressor protection.
Auto operation incase of sensor error.
Input & Output Relay output : 20A (Inductive).
Temp. Sensor Input : 1 NTC.
Application Deepfreezer
General
Specification
Temperature range -50°C to +99°C.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.
Spade terminals for compressors.

5f. Two Comp./ Differential Controller

1. SZ 7552P/7562P (2 compressor controller)

Tempressor Indicator


Main Features Individual set points, differentials and time delays.
Cycling of compressors to avoid overloading one
compressor.
Activate second compressor incase first compressor is
not able to handle the load.
An internal 10sec time delay is provided to avoid simultaneous
startups of
compressors to prevent an electrical surge.
Software keypad lock to avoid parameter tampering by
bystanders.
Input & Output Relay output : 8(3)A for two Compressors.
Temp. Sensor Input : 1 NTC Probe.
Application For 2 independent cooling units with one temperature
sensor.
General
Specification
Temperature range 0°C to 50°C (SZ 7552P) & -50°C to
99°C (SZ 7562P).
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.

5g. Temperature Controller with Alarm Output

1. SZ 7556P/7566P

Tempressor Indicator


Main Features Switch off compressor at setpoint.
Manual / Auto restart options.
Alarm output for high / low temperature.
Input & Output Relay output : 8(3)A.
Alarm relay : 5A.
Temp. Sensor Input : 1 NTC.
Application For panel a/c’s & applications requiring alarms.
General
Specification
Temperature range 0°C to 50°C (SZ 7552P) &
-50°C to 99°C (SZ 7562P).
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.

5g. Temperature Controller with Alarm Output

1. SZ 7556P/7566P

Tempressor Indicator


Main Features Switch off compressor at setpoint.
Manual / Auto restart options.
Alarm output for high / low temperature.
Input & Output Relay output : 8(3)A.
Alarm relay : 5A.
Temp. Sensor Input : 1 NTC.
Application For panel a/c’s & applications requiring alarms.
General
Specification
Temperature range 0°C to 50°C (SZ 7552P) & -50°C
to 99°C (SZ 7562P).
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.

5h. Humidity & Temperature Controller

1. SZ 2711/2911 (humidity controller)

Tempressor Indicator


Main Features Switch off relay at setpoint.
Alarm output for High / Low Humidity.
Dehumidification / Humidification.
Input & Output Relay output : 8(3)A.
Alarm relay : 5A.
Humidity Sensor Input : 1 RH Probe.
Application For humidification & dehumidification systems.
General
Specification
Humidity range 30% to 90% (SZ 2711) & 0% to
99% (SZ 2911).
Accuracy : +/- 5%(SZ 2711) & +/- 3%(SZ 2911) .
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC on
request.
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.

1. SZ 9912 (temperature and RH controller)

Tempressor Indicator


Main Features Alarm Indication for high / low temperature & Humidity.
Relay Out put for maintain temperature & Humidity.
Input & Output Relay output : 8(3)A for Temperature and RH.
Temp. Sensor Input : 1 PT-100.
RH Sensor (SZ - HS-220).
Application For humidification & dehumidification systems.
General
Specification
Humidity Range : 30% to 90% .Temperature range 0°C
to +99.9°C.
Accuracy : +/- 2%.
230VAC Standard. Other models with 12VDC, 24VDC,
110VAC
on request. QQ
Panel cutout : 29 X 71 mm Screw terminals : Admit 1X
2.5 mm2 wire.

5i. Cold Room Controller

1. CRC-1100

Tempressor Indicator


Main Features LCD with backlighting to display all parameters.
2 NTC probes for cold room temp + evap. coil temperature.
Relay outputs : Compressor + Heater + Evap. Fan + Alarm.
Audible alarm. Digital inputs : 2nos (a) Door switch (b)
Pressure cutout.
HP/LP/OSS trip protection for compressor. Compressor
protection algorithm.
Auto/Mannual defrosting facility (Time/Temp based).
Special software to indicate probable heater fault.
Input & Output Relay Output 1 : 8(3)A Compressor.
Output 2 : 8(3)A Heater.
Output 3 : 8(3)A Evaporator Fan.
Output 4 : 5A Alarm .
Temp. Sensor Input : 2NTC for Cold room chamber
and Evaporator Coil.
General
Specification
Temperature range -50°C to +50°C.
230VAC Standard. 110VAC on request.
Panel cutout : 92 X 92 mm Screw terminals : Admit
1X 2.5 mm2 wire.

2. CRC-1200

Tempressor Indicator


Main Features LCD with backlighting to see system status and 1”
display for temperature.
2 NTC probes for Cold room temp + Evap. coil temperature.
Computer Connectivity over RS485 and Remote monitoring
(Optional).
Fast Freeze mode, Inbuilt RTC, Door Input, Audible alarm.
Relay outputs : Compressor/ Cond.Fan/ Evap. Fan/ Heater/ Alarm.
HP/LP/SPPR trip protection for compressor.
Auto/Man defrosting facility (Time/ Temp based), Power
Switch Key.
Last 10 Fault Logs with Date/ Time Stamp.
Input & Output Relay Output : 8(3)A Compressor, Condenser Fan,
Evaporator, Fan, Alarm.
Temp. Sensor Input : 2NTC for Cold room chamber and
Evaporator Coil.
Digital Input : HP / LP / SPPR Input / Door Input
(Potential free) RS485 connector for PC Connectivity.
General
Specification
Temperature range -50°C to 35°C.
230VAC Standard
Screw terminals : Admit 1X 2.5 mm2 wire.

5j. Chiller Controller

1. Megachill

Tempressor Indicator


Main Features 7 segment LED display & LCD with backlight to display
all parameters and control status.
Audible alarm with LCD message for all faults.
HP/LP/OL/OSS trip protection for compressor.
Overload trip protection for pump and condenser.
Regulates water level via water solenoid valve.
Input & Output Analog Inputs : 6 NTC probes for CONTROL, E/INLET,
E/OUTLET, C/INLET, C/OUTLET, AFT.
Digital Inputs : HP, LP, OSS, AFT, Comp O/L, Pump
O/L, CCH, Cond. O/L, SSP, CWFS, EWFS, Bitzer comp
O/L, R, Y, B, Medium Water Level, Low Water
Level. Relay Outputs : Pump, Compressor, Condenser
Fan, Alarm, Water
Solenoid Valve, Bitzer Comp Reset, Liquid SV.
General
Specification
Temperature range -30°C to 50°C(resolution: 0.5°C).
230VAC Standard. 110VAC on request.
Panel cutout : 167 X 124 MM for Display Board.
Overall size : 150 X243 MM for Input/Output Board.

2. NanoChill (NC 110/120)

Tempressor Indicator


Main Features Blue 16 X2 LCD with backlighting to display all parameters.
Precise temperature control in 0.1°C resolution.
Liquid level sensing with 3 probes (Low, Medium, High).
Relay outputs: Compressor , Pump and Relay3( Alarm or
Water Sv) for NC110.
Relay outputs: Condenser, Compressor, Pump, Alarm,
Water SV, Solenoid Valve for NC120.
HP, LP, Auxiliary fault trip protection for Compressor.
2 NTC probes for Liquid temp + Antifreeze temperature.
Antifreeze temperature will display with “ ” key press on
NC110
Antifreeze & Condenser temperature will display with
“ ” key press on NC120.
Input & Output Temp. Sensor Input : 2 NTC for Liquid & Antifreeze.
Additional Temp. Sensor Input for Condenser Temperature.
Relay Output 1 : 8(3)A Compressor.
Output 2 : 5A Pump, Water SV / Alarm for Nc110.
Output 2 : 5A Condenser, Pump, Alarm, Water SV, Precision
SV for NC120.
General
Specification
Temperature range -30°C to 50°C
( Resolution 0.5OC.) NC110.
Temperature range -30°C to 50°C
( Resolution 0.1OC.) NC120.
230VAC Standard. 110VAC on request.
Panel cutout : 29 X 71 MM .
Screw terminals : Admit 1X 2.5 mm2 wire
for NC110
Molex type connector for NC120.

Castle Products

  1. HP, LP, HP/LP PressureCcontrollers
  2. Hand Shutt Off valves
  3. Solenoid Valves
  4. Angle Shutt Off Valves
  5. Ball Valves
  6. Moisture Liquid Indicators
  7. Water Flow Switch

For above and any other related products please contact Mr.Anil Shah at excel_adi@yahoo.co.in

 
 
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