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Mydax, Inc. 

1M150W 

Water Cooled Chiller 

 

 

Designed for Lockheed Martin   

 
 INSTALLATION

 

 
 

POWER CONNECTION

 

 

Main electrical power connections to this system are made via a ten foot long power cord with a CS8165C plug. 
 This chiller requires a 50 amp circuit, 460/480 volt, 60 Hz, 3 phase.  

 
DANGER:   Prior to any electrical servicing inside either the power box or the chiller cabinet, 
disconnect the power cord and lockout the main breaker with a lockout device. 

 
 

Once the unit is wired and plugged in, turn on the main circuit breakers mounted on the front of the system.  
The unit will not run without the proper phase wiring, if the display flashes “AC Power Fault”, unplug the cord 
and swap two of the phase lines and re-check. 
 
A message similar to the following appears on the 2 by 40-character main display: 

 

 
 

 

 

 

 

This display indicates that the microprocessor is initializing. After a few seconds, the controller will finish 
initializing and the "Warm-up Delay" message will return to simply "Mydax". Leave the unit turned on while 
hooking up the following plumbing connections. This will allow time for the crankcase heater to warm the 
compressor and separate the oil from the refrigerant. 
 

 

WARNING: 

The system should be powered for a period of 1 hour before starting, to 

      

 

allow the crankcase heater to separate the refrigerant from the oil.

 

 

 

CONDENSER FLOW

 

 

The condenser inlet and outlet fittings are 1" stainless steel female pipe thread fittings (FPT).  Plumb the 
facilities cooling water supply to the fitting marked 

CONDENSER IN

.  Plumb the facilities water return line to 

the 

CONDENSER OUT

 connection.  Given a facilities inlet temperature of +70

°

F, this chiller requires a flow 

of up to 14 gallons per minute. 

 

PLUMBING INTERFACE CONNECTIONS

 

 

The chiller's 2" stainless steel FPT fitting labeled 

TANK OUT

 must be plumbed to the inlet of the device to be 

cooled.  The outlet of the device to be cooled must be plumbed to the chiller's 2" FPT fitting labeled 

TANK IN

  
This system is equipped with a 1/2" FPT fitting labeled 

DRAIN

.  A valve should be installed at this location 

prior to the initial filling of the reservoir, for the convenience of future draining procedures.  The recirculating 
loop is under pressure when the system is operating.   
 

Check all fluid interface connections now to ensure against leaks.

 

 

FILL RESERVOIR

 

 

This unit is designed to recirculate deionized water. To fill the system's reservoir, use a funnel or insert a hose 
in the 1-1/2" fill port on the top of the reservoir and fill until the “Fill Tank” message is not present.  Add 
approximately 2 gallons of fluid after the “Fill Tank” message goes away to avoid nuisance alarms. 

 

 

 Tank    --- Warmup Delay ---  Local Set 

 12.10°C   0.0 Gpm    400K

      12.0°C

 

Summary of Contents for 1M150W

Page 1: ...vanced temperature control technology MYDAX INC INSTRUCTION OPERATION MANUAL 1M150W WATER COOLED CHILLER MYDAX INC 12260 Shale Ridge Road Auburn CA 95602 530 888 6662 FAX 530 888 0962 http www mydax c...

Page 2: ...YSTEM OVERVIEW 4 INSTALLATION 6 FRONT PANEL CONTROLS 8 ALARM ERROR MESSAGES 10 DIAGNOSTIC DISPLAYS 11 SERVICE WARRANTY 14 SHIPPING STORAGE PROCEDURE 15 DRAWINGS PARTS LIST FRAME DRAWING FLUID DIAGRAM...

Page 3: ...70 F 7 Gpm 40 F 20 PSI differential Electrical Service 460 480 VAC 60 Hz 3 phase 50 amp service Physical Parameters 65 H x 36 W x 58 D 1000 lbs dry weight STANDARD FEATURES This chiller is complete wi...

Page 4: ...reas where potentially harmful conditions exist and in this manual to bring attention to such conditions This chiller uses materials that are subject to environmental regulations be sure to familiariz...

Page 5: ...mpressor is hermetically sealed and no service should be required In the event that cleanup is necessary absorb oil with oil absorbent material and dispose of as a hazardous waste Follow approved clea...

Page 6: ...TD s resistance temperature devices located about the circuit The drawing shows RTD s at the discharge line leading from the recirculating pump at the return line leading to the reservoir between the...

Page 7: ...one power relay coil and a relay pole RL1 B The RESET switch serves to feed power to the relay which energizes the contactor When energized the contactor feeds power back to the relay so the RESET swi...

Page 8: ...e starting to allow the crankcase heater to separate the refrigerant from the oil CONDENSER FLOW The condenser inlet and outlet fittings are 1 stainless steel female pipe thread fittings FPT Plumb the...

Page 9: ...ow rate is visible on the front LCD display panel BYPASS VALVE To divert the recirculation flow from the output path back to the tank first open the Bypass valve then close the output flow adjustment...

Page 10: ...ition is eliminated or the MUTE ALARM switch is depressed again Pressing MUTE ALARM when no alarm is active causes the alarm to sound once and the TEST ALARM display to appear SET Enables SET TEMPERAT...

Page 11: ...decrements toggles tank temperature setpoint temperature and evaporator data view modes for multiple channel systems DECIMAL Display shows model number and software revision date and copyright RUN PU...

Page 12: ...s too close to freezing 4 C The microprocessor shuts down the system with a fatal alarm Push Reset Indicates that a fatal alarm in the interlock circuit has occurred and the operator must push the Res...

Page 13: ...a direct indicator of condenser temperature and pressure The microprocessor sends the CONDENSER HOT error message if the condenser temperature exceeds 54 C TEST PANEL 3 The first 3 sets of 4 digit nu...

Page 14: ...e the Flow OK relay below the selected GPM The output of the relay is wired to a BNC connector labeled Flow OK located on the rear panel of the unit The shield and center pin are the normally open con...

Page 15: ...setpoint temperatures of whichever recirculating channel was last selected at the Main Display and the system wide alarm history The second line indicates which recirculating channel was last selecte...

Page 16: ...use of a torch In particular service of Mydax refrigeration circuits requires attention to the following 1 Use caution to protect components from heat damage 2 Prevent any moisture from entering the...

Page 17: ...en run with water ethylene glycol should be added to the recirculating loop Verify that the concentration of ethylene glycol approaches 50 measure with a hydrometer in the recirculating loop before dr...

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