Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 99 of 105
VIII. Trouble Shooting Guide (continued)
J. Solenoid Valve Trouble Shooting
NOTE: If valve replacement or rebuilding is required: the applicable sections of the
machine must be isolated using the manual shut off valves. AGENT must be removed
from the isolated section using access or solenoid valves. When repairs are completed,
and leak tested, the isolated section must be evacuated to a 1000-micron minimum
vacuum level before reopening the isolation valves.
1. Solenoid valve will not shut off:
a. Solenoid valve seals are worn out. Replace solenoid valve seals and spring using
rebuild kit part number A4-04-0530-00-0.
b. Solenoid valve seals are fouled with particulates. Replace solenoid valve seals and
spring using rebuild kit part number A4-04-0530-00-0. Examine particulate content
to determine the source and correct as requires.
c. Solenoid valve seals are swollen due to the introduction of refrigerants other than
Agent into the machine. Evacuate the machine and rebuild valves using kit part
number A4-04-0530-00-0.
2. Solenoid valve will not open during automatic processing or when the front panel
switch is in the ON position:
a. Solenoid wiring is disconnected. Ohm-out wiring and repair connection.
b. Solenoid valve coil is open. Replace entire solenoid valve with part number
A1-15-1010-00-0.
c. Solenoid valve seals are swollen due to the introduction of refrigerants other than
Agent into the machine. Evacuate the machine and rebuild valves using kit part
number A4-04-0530-00-0.
3. Solenoid valve will not open during automatic processing but does open when
the front panel toggle switch is placed to the ON position.
a. PLC output fuse is blown. The fuse is located just below the PLC. Examine the
fuse and replace as required with same rated fuse.
b. Solenoid PLC wiring is disconnected. Ohm-out wiring and repair connection.
c. PLC output section is damaged. Consult factory.
4. Solenoid valve will open during automatic processing but does not open when
the front panel toggle switch is placed to the ON position.
a. Solenoid switch wiring is disconnected. Ohm-out wiring and repair connection.
5. Solenoid valve makes a buzzing noise when energized.
a. Solenoid wiring is defective. Ohm-out wiring and repair connection.
b. Solenoid valve coil is burnt out. Replace entire solenoid valve with part number
A1-15-1010-00-0.
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