Master Bilt K manual Alarm Signals, Electrical Connections

Page 11

ALARM SIGNALS

Message

Cause

Outputs

“P1”

Room probe failure

Compressor output time, 6 min on, 4 min off

 

 

 

“P2”

Evaporator probe failure

Defrost end is timed

 

 

 

“HA”

Maximum temperature alarm

Outputs unchanged.

 

 

 

“LA”

Minimum temperature alarm

Outputs unchanged.

 

 

 

NOTE:

Probe alarms “P1” and “P2” start some seconds after the fault in the related probe; they automatically stop some seconds after the probe restarts normal operation. Check connections before replacing the probe.

Temperature alarms “HA” and “LA” automatically stop as soon as the thermostat temperature returns to normal values and when defrost starts.

ELECTRICAL CONNECTIONS

The controller is provided with screw terminal block to connect cables with a cross section up to 2,5 mm2. Before connecting cables make sure the power supply complies with the control’s requirements. Separate the probe cables from the power supply cables, from the outputs and the power connections. Do not exceed the maximum current allowed on each relay, in case of heavier loads use a suitable external relay.

PROBE CONNECTIONS

The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration. It is recommended to place the thermostat probe away from air streams to correctly measure the average room temperature. Place the defrost termination probe among the evaporator fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during defrost, to prevent premature defrost termination.

BLG/TLG CABINET COMPONENT AMP DRAW

 

PART

VOLTAGE

 

 

AMPS AT

AMPS AT

 

ITEM

NO.

RATING

CABINET

 

208 VOLTS 230 VOLTS

NOTES

Coil Defrost Heater

17-09408

230 V

BLG/TLG-48,

52

3.9

4.3

Check Red or Black Leg

Coil Defrost Heater

17-01311

230 V

BLG/TLG-74,

80

6.3

7

Check Red or Black Leg

Condensate Heater

 

230 V

BLG-48, 52, 74, 80

1.2

1.3

Check Red or Black Leg

Condensate Heater

201I130

230 V

TLG-48, 52, 74, 80

1.2

1.3

Check Red or Black Leg

Door Frame Heater

17-09419

115 V

BLG/TLG-48, 52, 74, 80

.33 ea

.37 ea

Check Black Leg

Door

31-02602

120V

BLG/TLG-48, 74

.55 ea

.60 ea

Check Black Leg

Door

31-02603

120V

BLG/TLG-48

.55 ea

.60 ea

Check Black Leg

Door

31-02604

120V

BLG/TLG-52, 80

.76 ea

.84 ea

Check Black Leg

Door

31-02605

120V

BLG/TLG-52

.76 ea

.84 ea

Check Black Leg

Drain Heater

17-00404

115 V

BLG/TLG-48, 52, 74, 80

0.05

0.06

Check Black Leg

 

PART

VOLTAGE

 

AMPS AT

AMPS AT

 

ITEM

NO.

RATING

CABINET

104 VOLTS 115 VOLTS

NOTES

Coil Defrost Heater

17-09407

120 V

BLG/TLG-27

4.3

4.8

Check Black Leg

Condensate Heater

A321-130

115 V

BLG-27

2.3

2.6

Check Black Leg

Condensate Heater

323I130

115 V

TLG-27

2.3

2.6

Check Black Leg

Door Frame Heater

17-09419

115 V

BLG/TLG-27

0.33

0.37

Check Black Leg

Door

31-02600

120V

BLG/TLG-27

.81 ea

.90 ea

Check Black Leg

Drain Heater

17-00404

115 V

BLG/TLG-27

0.05

0.06

Check Black Leg

 

 

 

 

 

 

11

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Contents Installation & Operations Manual Page Table of Contents Store Conditions IntroductionGround Required For Safe Operation General Instructions PRE-INSTALLATION InstructionsInstallation Instructions Inspection for Shipping DamageElectrical Doors Tension needs to be checked and set when first installManual Defrost MASTER-BILT Electronic Refrigeration Control OperationHOW to Change a parameter value HOW to Change the SetpointPart Voltage Amps AT Rating Cabinet Volts 115 Volts Alarm SignalsElectrical Connections Final Check List Service InstructionTemperature sensor, defrost heater and fan motor replacement BLG/TLG MASTER-BILT Part ListOwner Responsibility Sale and DisposalPage Page Page

K specifications

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