4. If in doubt about the battery, install a new battery, or test the key with a multi-meter by holding the probes
into the metal holes, voltage should be at least 8-volts DC.
5. The LEIT Key will work with all current and discontinued SOLATROL, ALTEC, and current LEIT controllers.
6.2 LEIT Controllers
1. If a “good” LEIT Key is inserted into a controller and there is no display, the problem is with the controller.
2. When a “good” LEIT Key is installed in a LEIT controller, “PRESS YES WHEN MOST READABLE” (English or
Spanish) should appear on the display immediately.
3. If a LEIT Key is installed and the display reads “CHARGING PLEASE WAIT” the controller probably has a
problem with the PVM or a radio enabled XRC is in shade.
4. If the LEIT controller is not holding the current day/time, the problem is with the controller.
5. If the display is scrambled or showing unrecognizable characters, the problem is with the controller.
6. If one or more of the keypad buttons are sticky or non-functional, the problem is with the controller.
7. To test a controller’s output, connect a “good” LEMA 1600HE or 1520 actuator directly to the terminal strip,
and initiate a temporary manual run with 1 minute to the station in question and zero minutes on all other
stations. Verify that the plunger retracts and extends or you hear the sound of the plunger latching inside
the solenoid. If it does not retract or make any sound, the problem is with the controller.
8. LEMA 1600 series actuators will not work on station #1 on LEIT 4000 controllers SW version 7.8 or less.
9. ALTEC Dash 4 or LEMA 1600 actuators cannot be used on expansion controllers.
10. If the controller functions properly doing a temporary manual run, but is not running valves automatically
by program, the controller is probably incorrectly programmed. In SETUP SYSTEM check active programs,
sensor & MV/P settings. In SETUP SCHEDULE, make sure no programs are overlap.
11. LEIT controllers will only function with LEMA actuators.
12. Compatible sensors are the HUNTER MINI-CLIK or RAIN BIRD RSD. The SKIT 8821-4 sensor adapter must
be used with any sensor.
6.3 LEMA Solenoid Actuators
1. Verify that the proper model number solenoid actuator and series is being used for the controller in
question.
2. Verify that the white wire is connected to the common wire, and the red wire is connected to the “hot”
wire, and that these splices are tight, and corrosion free.
NOTE:
An ohm meter set to measure low resistance can be used for wiring verification. If the red and
white wires are temorarily joined at the solenoid, the total loop resistance from the controller red to
white should be less than 30 ohms.
3. Verify that no water is leaking near the adapter, stem, or bonnet.
4. Verify that all “O” rings and/or rubber sleeves are in place. If in doubt, check manuals.
a. To test a LEMA actuator, remove the actuator from the valve and disconnect the hot and common wires. Verify
the actuator functions with a 9-volt battery by holding the wires to the positive and negative contacts. Reverse
polarity if nothing happens. Plunger should retract. Reverse polarity to close, (plunger should extend).
b. If a LEMA actuator does not function with a 9-volt battery, the problem is with the actuator, and it should
be replaced.
NOTE:
Never use a high power source, such as a car battery to test a LEMA 1500 or 1600
solenoid actuator. If a 9-volt battery is used, never connect the solenoid for a long period,
just briefly touch the wire. If applying power for more then half second, it can destroy the
solenoid actuator.
5. If the LEMA actuator works with the battery but not through the controller, remove the solenoid
actuator from the valve and connect the LEMA actuator directly to the controller terminal strip
and institute a temporary manual run. If it functions, the problem is with the field wires or the
hydraulic valve.
6. If the valve is weeping or not closing completely the adapter may be loose, cross-
threaded, missing an “O” ring, the adapter sleeve is damaged, or the valve diaphragm
could be in need of cleaning or replacement.
7. If the valve is not opening completely, the adapter being used may be too tight, the
adapter sleeve may be damaged, or the valve water passage down stream may be
plugged and in need of cleaning.
The LEMA solenoid actuator operates only with 2-way normally closed valves.
8. Solenoid parts list.
26
Spring
30-942
Plunger
Assembly
30-943
Retainer
30-946
