hussman GSVM Model no Refrigerant Suction Pressure Head Pressure Type, Evaporator FAN Motors

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Be sure that all service valves are open to al- low all of the mixture to be discharged.

b.Connect a deep-drain vacuum pump to both the high and low side of the system. Pull a vacuum on the system to at least 1500 microns.

c.Break the vacuum by adding refrigerant into the system until the pressure is above 0 psig. Always charge the refrigerant line

into the system through a new drier in the charging manifold line. A 16 cubic inch drier is sufficient for this purpose.

d.Repeat steps 2 and 3 two more times, the third time evacuating the system to 500 microns.

The following pressures are optimum when the case in a 75º to 80ºF ambient and is running from 35º to 40ºF cabinet tempera- ture and are for reference only:

MODEL NO.

REFRIGERANT

SUCTION PRESSURE

HEAD PRESSURE

 

TYPE

(psig)

(psig)

 

 

 

 

GSVM4060

R-134a

12-15

130-150

 

 

 

 

 

 

 

 

GSVM4072

R-134a

12-15

130-150

 

 

 

 

 

 

 

 

GSVM5272

R-134a

14-18

130-150

 

 

 

 

GSVM5272

R-404A

40-50

310-320

 

 

 

 

Consult the serial plate for the correct refrigerant charge. This charge is critical and should be weighed in.

TEMPERATURE CONTROL –

The temperature control is located in the electrical box. The sensing bulb is lo- cated on the left hand end of the lower back wall.

When replacing make sure the bulb is in the proper location and that the hole in the liner is properly sealed after the replace- ment has been made.

The control is adjustable from –30º to 50ºF (dial face marking). The actual cabinet tem- perature is approximately 6 to 9º warmer than the control setting so this must be taken into consideration.

The control also has an adjustable differen- tial that determines the difference between the cut-in and cut-out temperature. This is adjustable from 5 to 20º. The factory set- ting is from 8-10º to insure proper off time to keep the evaporator from icing.

EVAPORATOR FAN MOTORS –

To replace an evaporator fan motor, the product must be removed from the cabinet and the bottom shelf also removed.

Next, remove the plate covering the fans by removing the 2 screws, and 4 bolts holding this in place. The fans are now ac-

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Contents OII Gsvm Table of Contents Table of Contents CON’T Inspection IntroductionSkid Leveling Access Panel RemovalSealing DrainsPower Switch Power RequirementsLoading Electrical BOXConnections Refrigerant RUN Fuse Power Type Amps Amps Cord Specifications DimensionsShelving Maximum Weight Capacity LBS ElectricalTemperature Control Shelves Condensing UnitThermometer Cleaning Interior Cleaning ExteriorLighting Refrigeration Cleaning Stainless Steel SurfacesEvacuation Evaporator FAN Motors Model no Refrigerant Suction Pressure Head Pressure TypeTrouble Probable Cause Solution Trouble Shooting ChartsProblem Solution Trouble Shooting Light ChartGsvm Accessories Ordering Parts Replacement Warranty and Parts InformationCompressor Replacement Procedure Warranty Parts Procedure115 115 115 60 Hz Gsvm 52072 R-404A

GSVM specifications

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