Espar Hydronic 4/5 Coolant Heater Installation, Troubleshooting and Parts Manual

The Espar Hydronic 4/5 is an auxiliary coolant heater. On a crane or heavy machine it warms the engine coolant and the cab so the unit starts and works in cold weather. This manual is used on Demag machines. A tech reaches for the Hydronic 4/5 Coolant Heaters Manual when a heater needs to be installed, when it won't fire, or when a part has to be identified and replaced.

What this manual helps you do

• Follow the installation procedures and check the principal dimensions before you mount the heater.
• Connect the fuel system, electrical connections and exhaust/intake connections in the right order.
• Trace a fault with the troubleshooting chart and the operational flow chart.
• Verify fuel delivery using the fuel quantity test.
• Replace worn parts using the description and part numbers list and the parts and accessories diagram.

Who this is for

A crane service technician or rental fleet mechanic who is fixing a heater in-house on a machine that's out of warranty. Also an independent repair shop or plant maintenance crew that picked up a used machine with no paperwork and needs to know how the heater goes together and runs.

FAQ

Q: What do I receive and how is it organised?

A: One English PDF of 43 pages, publication number 610-121-0201. The text is searchable. It runs from the introduction and specifications through heater components, installation, heater operation, schematics, troubleshooting and repairs, and the parts diagram.

Q: Which heater does it fit?

A: The Espar Hydronic 4/5 coolant heater, including the Hydronic 4/5 SC, 12 volt, gasoline version. It comes from the Demag machine documentation.

Q: How does it fit the job I'm doing?

A: The cover reads "Hydronic 4/5 (Coolant Heaters) Installation, Troubleshooting, Parts Manual", and the sections follow that order. You install, run and check the heater, diagnose it, then order parts. It's the complete manual, so you can keep it open at the bench.

If you're fitting, diagnosing or re-parting a Hydronic 4/5 heater, this manual gives you the procedures, flow chart and parts diagram to do it.

Click here to view the preview (PDF)

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