Marley Fluid Cooler pump control panel system user manual
Contents
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6. Marley CoolBoost Pump Control Panel System User Manual 09 1367 gt Marley Introduction NEMA 4 fiberglass outdoor enclosure with the following features Hinged and lockable outer door Swing out dead front inner door Corrosion resistant enclosure Electrical Components External disconnect handle with padlocking provisions to meet lockout tag out safety requirements Main circuit breaker with thermal and magnetic overload protection Door mounted operators Pump starter Pilot lights Status contacts Wiring diagram laminated and mounted on inside door Built to 01508 and CUL508 safety requirements Options Single Point Power Connection Integrated basin heater controls Integrated water level controls VFD feeder breaker if fan is controlled with remote VFD Factory installed and wired on selected products A Warning A Warning A Warning Introduction These instructions are intended to assure that field connections are completed properly and the control system operates for the maximum time possible Since product warranty may depend on your actions please read these instructions thoroughly prior to operation If you have questions about the operation and or maintenance of this control system and you do not find the answers in this manual please contact your Marley sales representative Hazard of electrical shock or burn Be sure to turn off power to the pa
7. d The card includes an on board relay with 1 form dry contact Contacts are wired to a user terminal strip for connection to remote devices such as makeup solenoids and alarms S a 2 Stilling Chamber Water Level Probes Water Level Card Water make up control Form 1 1 contact wired to 120 VAC fused circuit for customer use to power a remote solenoid High water alarm N O contact wired to user terminal block Low water alarm contact wired to user terminal block High water cutoff N C contact wired to user terminal block Low water cutoff N C contact wired to user terminal block paysiuiny 300 QZ OMY BL z 14 Aq OMY 81 Z Aq 8 HOZ Z 894044 Wa sfs 1930M paysiuiny pjaiys m aqoid usog Q dung 9 oquuoo dund 0 G4A 0 9D U0D O G4A 0 SNA Woy poads waisks Josuas 10HINOO YIMOd O3N punoub snjd saum Z 5 Aq plouajos
8. in temperature rises above 45 F If the basin water drops to a dangerously low level the water level card contact will close and also energize the latch in relay shutting the circulating pump off This is a safety circuit preventing the pump from running dry To reset this circuit press the reset button on the door The circuit can only be reset if the water in the basin has risen to an acceptable operating level Operation Integrated Basin Heater Control Circuit Option This circuit monitors the water temperature in the cold water basin via a probe type sensor mounted through the side wall of the cold water basin The temperature probe is furnished with 22 feet of lead length Longer lead lengths up to 99 feet are available Do not add wiring to the probe lead The solid state control card is located inside the control panel A power contactor inside the control panel is used to energize the heating element Sensor Probe with 22 foot lead Basin Heater Card The temperature card and basin heater element maintains water temperature in the basin between 40 F and 45 F The temperature probe includes low water cut off circuit If the water level falls below the temperature probe the basin heater contactor will not energize Operation Solid State Water Level Control and Alarm Circuit Option The number of probes depends on the number of optional circuits being furnished Each water level event requires one car
9. ker Operating handle for the main breaker is located behind the outer door which is pad lockable for lock out tag out Rotating the handle to the OFF position turns power off to the panel Rotating the handle to the ON position provides power to the control panel If servicing the panel hot door open and main breaker in energized position be sure to align the keyed slot on back of the operating handle with the key on the main breaker shaft before closing the door Power ON Light A pilot light indicates the main disconnect is on and the control panel is powered Pump Operation Standard operation of the pump is by manual control only using two position selector switch located on the door A removable run enable jumper is provided so customer may take control of cycling the pump See the control panel wiring diagram Cycling the pump on and off for temperature control could cause scaling on the coils and is not recommended OFF ON Selector Switch OFF position pump motor is off ON position pump motor will run constantly unless a safety circuit is activated If the water temperature in the cold water basin drops to 35 F contact from the remote thermostat will close and latch in a relay which in turn shuts off the circulating pump This is a safety circuit to prevent pumping freezing water To reset this circuit press the reset button on the door The circuit can be only reset once the cold water bas
10. nel before servicing Ifworking on equipment out of site of panel disconnect lockout using standard lockout procedure Safety First The Marley control system uses UL listed components installed in accordance with the National Electric Code The location of the cooling product and field installation of the control system can affect the safety of those responsible for installing operating or maintaining the tower and controls However since SPX Cooling Technologies does not control the tower location or field installation we cannot be responsible for addressing safety issues that are affected by these items The following safetyissues should be addressed by those responsible for installation maintenance or repair of the tower and controls e Access to and from the control panel including the customer supplied main disconnect branch circuit protection Proper grounding of electrical control circuits e Sizing and protection of branch circuits feeding the control panel e Qualification of persons who will install maintain and service the electrical equipment These are only some of the safety issues that may arise in the design and installation process SPX Cooling Technologies strongly recommends that you consult a safety engineer to be sure that all safety considerations have been addressed Other safety issues are addressed in literature supplied with your cooling product You should closely review the literature prior
11. to installing maintaining or repairing your cooling product Installation Circulating Pump Circuits For the low water safety circuit connect the two low water probes located in the basin stilling chamber to user terminal points in the control panel Marley probes are furnished with 20 0 leads Refer to the wiring diagram in the control panel for connection points Water Level Probes Water Level Card Note Installation For the freeze safety circuit run two 18 gauge control wires from the thermostat located on the fluid cooler side casing to user terminal points in the control panel The thermostat has two sets of terminal points Use either the left or right two points oriented in a vertical column Adjust the temperature range so the red arrow on the left points to 35 F as shown below The thermostat provided with this system requires adjustment Remove the inner most brass fitting located on the thermostat enclosure to gain access to the adjusting screw Adjust cut out set point temperature to 45 F This automatically sets the cut in point at 35 F _ Se re Sali PERI ue THERMOSTAT PROBE Thermostat Installed on Casing Thermostat and Probe Adjustment Screw N O Contact Set at 35 F Thermostat Probe Installation Thermostat A Caution Operation Operation Main Circuit Brea
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