Hoffman Media EDD-4C manual Problem Possible Cause Solution

Problem	Possible Cause	Solution
The OIL LED is on.	• Oil tank is empty	• Refill the oil tank
	• A shut-off valve at the outlet of	• Open the shut-off valve
	the oil tank might be closed	• Change the oil filter, or clean out
	• Oil flow from the oil tank may be
		any obstructions in the pipe
	obstructed; the oil filter may be	between the oil tank and the
	clogged	Dripmaster inlet
	• Oil blockage between the	• Clean out any obstructions in
	Dripmaster outlet pipe and the	the pipe between the
	line-shaft—excessive oil briefly	Dripmaster outlet and the line-
	flows from a built-in overflow	shaft.
	hose
		Note: Reset the system after fixing
		the problem. See Resetting
		the Dripmaster on page 18.
		After restoration, the
		counter displays 00, and the
		drip search function causes
		the motor to open the
		needle valve until drops are
		detected, after which normal
		stabilization occurs.

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