CAIRE NewLife Elite, Technical Manual, Page: 29 / 49

MN240-1 Rev C
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5.4.2 Solenoid Valve Coil Replacement
An ohmmeter can be a useful tool in determining the condition of a valve coil.
When using and ohmmeter in the NewLife unit, valve coil readings should be as
indicated below:
1. Elite 120VAC units
a. EQ coil = 800ohms ± 10%
b. Feed/waste coil = 800ohms ± 10%
2. Intensity 120VAC units
a. EQ coil = 1,000ohms ± 10%
b. Feed/waste coil = 800ohms ± 10%
3. Elite and Intensity 220-240VAC units
a. EQ coil = 4,400ohms ± 10%
b. Feed/waste coil = 3,220ohms ± 10%
You can also determine which coil is not operating by checking each valve to see if
it becomes energized (magnetized) during unit operation.
To check for coil operation, follow the steps below:
1. Remove plastic cap securing the valve coil to the valve stem. (Do not
remove coil).
2. With unit operating, hold a paperclip or the metal tip of a screwdriver
slightly over the top of the valve stem located in the center of the coil.
3. When the coil becomes energized (magnetized) the paperclip or tip of the
screwdriver will be pulled down onto valve stem, indicating the valve coil is
operating.
4. If a coil is faulty, it will not become energized and require replacement.
To replace a solenoid valve coil, follow the steps below:
1. Set the unit’s ON/OFF switch to the OFF position and disconnect the power
cord.
2. Remove the side and back panels.
3. Remove the red cap with a slotted-head screwdriver.
4. Disconnect the solenoid leads and lift off the solenoid coil.
5. Replace with the new coil.
6. Press the red cap back on top of the coil, and reconnect the solenoid leads.
7. Reconnect the back and side panels.