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709SK (709sk--mas2.jpg)
Part Number 709SK

709SK, GFCI SERVICE KIT

Part # 709SK

GFCI SERVICE KIT


$77.69 Retail Price: $86.98
In Stock

Product Details

Specifications

Approval
Condition
New
Manufacturer
McFarlane Aviation
Dimensions
L: 5 x W: 5 x H: 3 in
Weight
0.22 lbs
Unit of Measure
Each
McFarlane Part Number
709SK

Application

Universal Part

Universal part. Sizing customizable to fit your needs.

Product Description

The 709SK GFCI Service Kit is a safety upgrade for the SAFE-HEET line of engine heaters or any other silicone pad engine heater. The kit provides ground fault and surge protection and all appropriate placarding and instructions for compliance with McFarlane Service Bulletin SB-3.

The addition of one 709 Ground Fault Circuit Interrupter and surge protector in every SAFE-HEET now makes our engine heater the safest unit available. With ground fault and surge protection the chance of dangerous and undetected lightning and mechanical damage that could cause lethal electrical shocks or engine damage is eliminated. SAFE-HEET uses U.L. recognized components and a 100% thermal fused element. The element itself shuts down the flow of electricity if any point on the element overheats. SAFE-HEET is thermostat controlled to maintain oil sump temperature less than 160 deg F. There is no flame or hot air to burn paint or plastic parts. The risk of fire associated with cold starts is reduced. 

Features and Benefits:

  • Reduces electrical shock hazards in wet or damp environments
  • Helps protect your engine heater and engine against electrical surges and lightning damage
  • Detects electrical shorts or faults
  • Provides compliance with McFarlane Service Bulletin SB-3

709SK Kit Contents:

  • 1 each Ground Fault Circuit Interupter (GFCI)
  • 1 each Cord placard
  • 2 each Large cable ties
  • 2 each Small cable ties
  • Installation and use instructions 
  • McFarlane Service Bulletin SB-3

WARNING: Cancer and/or Reproductive Harm - California Proposition 65 Resources

Eligible Aircraft
Make Model Start S/N End S/N Eligibility Chart
Many ManyManyS/N 1 – 999999999999999999999999999999Eligibility Chart
FAQs

Why should I buy the McFarlane brand?

McFarlane’s adhesive is thermally conductive, so it transfers heat effectively while the other brands use a peel and stick tape that tends to fall off. As a result, McFarlane’s has a longer life over the other brands. McFarlane’s adhesive is resistant to solvents/oils but if it ever does fail, the heat pad is not going to jam up anything in the engine compartment, because it is not a solid metal like other brands out there. SAFE-HEET heats the engine oil while other brands heat the cylinder, not the oil. SAFE-HEET is safe and is electrically grounded with a ground wire. The SAFE-HEET pad covers a large surface. McFarlane’s GFCI can be used with any heater, not just SAFE-HEET.

What does the GFCI do?

The GFCI protects the SAFE-HEET and engine from any electrical fault situations by shutting off power to protect people and the engine. Abuse of the power cord can cause dangerous electrical failures.

I don’t think enough adhesive was supplied with my SAFE-HEET. Can you send me more or can I use the silicone adhesive?

The amount of adhesive contained in each kit is enough to do one installation and offers better thermal heat transfer than using a larger quantity. The adhesive should be thin, if there is no adhesive 1/8” from the edge of the pad it will not be a problem because our adhesive is totally resistant to solvents or oils. Sealing the edges is not necessary. Using silicone adhesives will allow the heat pad to come loose because silicone is not resistant to solvents or oils. If you feel you need more adhesive, we will send you more at no charge upon request.

My GFCI is not working.

Reference the troubleshooting instructions provided with the purchase of a SAFE-HEET. The GFCI will not work unless plugged directly into an outlet. Plug in the GFCI then the temperature controller. The GFCI needs to be the first thing plugged into the circuit. The GFCI needs full voltage to engage. It cannot have an extension cord plugged in the outlet, then the GFCI to the SAFE-HEET. The GFCI does reset itself every time it is unplugged.

Can I install SAFE-HEET on an induction box/Plenum?

On some aircraft (like the Lycoming IO-540 engines) the induction box covers up the oil pan where the SAFE-HEET would normally be installed. It is permissible for the SAFE-HEET to be installed on the induction box, because the box/plenum is a thick casting that can transfer heat effectively.

Can I use temperature controller P/N 707 with a 220 Volt system?

No, you will need to use a converter that can supply 3 amps at 120 volts to operate both a SAFE-HEET and 707.

What setting do I place the 707 controller to get my engine at a certain temperature?

This is determined by experimentation on knob settings and several variables such as ambient temperature, wind, size of engine/propeller combination and insulation of engine cowling.

Do you have any advice for installing a SAFE-HEET?

SAFE-HEET engine heaters are installed with a two-part adhesive. The engine heater can be installed quickly and easily by using the 707 temperature controller at half power. At temperatures below 70°F the temperature controller must be used to ensure proper adhesive cure. Proper adhesive cure is essential to full service life of the heater.

Why should I purchase a complete kit?

The kit includes the SAFE-HEET and temperature controller. The temperature controller makes installation easier and helps control condensation which leads to corrosion. It is like a dimmer switch that puts you in control of how much power is going to the unit.

How long should I let the adhesive cure?

Twenty hours at a temperature of 70 degrees. If using a temperature controller you can turn the thermostat to about 110 degrees and it will take about seven hours to cure

Should I leave the heater plugged in all the time?

Yes, if the temperature is controlled to prevent condensation which can lead to corrosion.

What does it cost to operate the SAFE-HEET?

It costs about 3 cents per hour to operate.

Is there a SAFE-HEET designed to be used with 240 volts?

No, neither a SAFE-HEET nor Temperature Controller should be plugged into 240 volts. You can use a system with an adapter that reduces the voltage to 110 and can supply at least 3 amps.

Can two SAFE-HEET engine heaters be connected to one temperature controller?

Yes, the 707 is rated at 600 watts. This is enough power to run two units by using a splitter.

What are the watts of SAFE-HEET?

 

P/N Dimensions Watts
700 4 inch x 4 inch 200 Watts
705 7.5 inch x 3.5 inch (diamond)  150 Watts
720 7 inch x 4 inch 300 Watts
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