Robertshaw G1 & G4 Series Direct Replacement Controls User manual

Brand: Robertshaw

Model: G1 & G4 Series Direct Replacement Controls

Type: User manual

INSTALLATION DATA

G1 & G4 SerieS

DireCT rePLACeMeNT

CONTrOLS

DESCRIPTION/APPLICATION

Ranco G1 (SPST) and G4 (DPST) direct replacement remote bulb

temperature controls match the speci caons of the original

equipment manufacturer. These controls may be either xed-seng

or have a range of adjustment (see specicaons on back). They have

been manufactured with various mounng bracket and dial sha

conguraons,as well as vari ous capillary lengths and bulb sizes. These

variaons have been tailored to the specic applicaon. The switch on

both the G1 and the G4 opens on a rise in temperature. These controls

are used in a variety of heang-type applicaons which include control

of: clothes dryers and laundry presses cooking ovens, fryers, and coee

urns; space heaters; various indus trial process equipment. The G1 may

control an elec tric heang element or an electrically operated gas valve.

The G4 most commonly operates an electric heang element and its

double pole switch is used to break both sides of the electrical circuit.

G1 Single pole, single throw (SPST)

open (cut-out) on rise

close (cut-in) on drop

G4 Double pole, single throw (DPST)

open (cut-out) on rise

close (cut-in) on drop

PREINSTALLATION STEPS

1. Disconnect electrical power.

2. Refer to the equipment manufacturer’s service manual.

3. Note posion and roung of the control’s sensing element.

4. Record the electrical wire to terminal connecons.

5. If the sensing element enters a pressurized ng or well,

cauously relieve the pressure and remove the uid prior to

removal of the control.

6. Remove control, retaining the screws and any hardware required

for the replacement.

CAUTION

To prevent possible electrical shock or equipment damage, disconnect

electrical power to the unit before and during installaon. DO NOT

restore electrical power to unit unl the control is properly installed

and the cover is assembled. DO NOT locate the control in an explosive

atmosphere as a safety hazard can result due to possible spark generaon

in the control. Controls are not to be located in areas of signicant

moisture ,dirt or dust, or in a corrosive explosive atmosphere. Use

of controls in such environments may result in injury or damage to

the persons or property (or both) and are likely to shorten control life;

Ranco assumes no responsibility for any such use.

INSTALLATION OF NEW CONTROL

1. The p of the screws used to mount the control must not extend

through the mounng bracket so as to touch the control body.

2. Taking care to not twist the control body secure it to the original

mounng.

CAPILLARY CARE AND MOUNTING

1. Hold the capillary close to the control and careful ly uncoil the

required amount. Minimize rebending of the capillary which makes

it more suscepble to breakage.

2. If the original control had a protecve sleeve on the capillary,

transfer it to the new control.

3. DO NOT cut the capillary or bulb. Avoid sharp bends, kinks, strains,

or pinch marks in the capil lary. Never allow the capillary to rest

against sharp edges or rub against metal surfaces. Avoid expos ing

the bulb and capillary to extreme temperatures.

4. A drip loop should be provided in the capillary to prevent moisture

from reaching the control and causing an electrical short.

5. Excess capillary should be placed in an area as free as possible from

excessive heat. Secure any excess capillary in 3 inch coils to avoid

damage from vibraon and contact with electrical ter minals.

6. If the sensing element has a compression ng, hand start the

ng. Using a suitable wrench, se cure the ng.

DO NOT overghten.

CONTROL WIRING

1. Disconnect electrical power to the unit.

2. DO NOT exceed the electrical rangs listed below.

3. The control’s terminals must not be eld bent, cut o or modied.

4. Allow some slack in the wire to prevent stressing of the switch.

Provide a drip loop in the wiring to prevent water from reaching

the control.

5. Secure wires to prevent damage from heat, sharp edges, moving

parts, vibraon, etc.

Customer Service Telephone 1.800.304.6563

Customer Service Facsimile 1.800.426.0804

[email protected]

Robertshaw®, Ranco®, Paragon® and Uni-Line® are

trademarks of Robertshaw its subsidiaries and/or

affiliated companies. All other brands mentioned

may be the trademarks of their respective owners.

For Technical Service

Telephone 1.800.445.8299

[email protected]

www.robertshaw.com

03/15 –1531069 RevB

ELECTRICAL RATINGS

VAC

G1 (not G1P)

RESISTIVE

AMPS

G1 & G1P

PILOT DUTY

VOLT-AMPS

RESISTIVE

AMPS

125 or 250

277

480

125

–

SPECIFICATIONS

PART NUMBER

TEMPERATURE

RANGE °F

(CUT-OUT)

DIFFERENTIAL

°F

STEM ROTATION

TO WARMER

POSITION

G1-1047

G1-2638

G1-5005

G1-5271

G1-5373

G1-5596

G1-5648

G1-5649

G1-5873

G1P-5873

133 to 190

240 to 400

160 to 400

60 to 250

60 to 187

350 xed

150 to 550

50 to 250

45 to 185

67 xed

200 to 400

60 xed

–

The G1P controls are for pilot duty only. See Electrical rang secon.

G4-5873 150 to 550 8 CW

For addional specicaons and for those controls not listed above,

refer to the general catalog and the carton label.

CHECKOUT

Inspect work to be assured that all the above steps were taken. Start

up the unit and observe at least one full cycle. When applicable, check

compression  ng for leaks.

RECALIBRATION

1. Recalibraon is normally not advised nor neces sary. It should be

aempted only aer the equip ment has operated for three or more

full cycles and it has been determined that recalibraon is absolutely

necessary.

2. Use a suitable temperature measuring device in the proper locaon

to determine calibraon of control.

3. To recalibrate, carefully remove dial knob without moving the sha.

4. Securely hold the dial sha and recalibrate as fol lows: turn the screw

in the center of the dial sha clockwise to decrease temperature;

counterclockwise to increase temperature. 1/8 turn changes the

seng approximately 20°F.

5. Recheck operaon of equipment aer recalibraon.

Robertshaw G1 & G4 Series Direct Replacement Controls User manual

Robertshaw G1 & G4 Series Direct Replacement Controls User manual

Robertshaw G1 & G4 Series Direct Replacement Controls User manual

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