Gasboy Atlas Start-up - Manual (Page 188)

Page 6-68 MDE-4334D Atlas™ Start-up and Service Manual · July 2013
Hydraulic/Mechanical Components Valves
Service Tips
While reinstalling the strainer, always install it with tabs pointing downwards. Hand-tighten
the filter and do not use a wrench.
Solenoid Valves for 9 X 40, 9850 and 9 X 53 with Satellite Outlet Piping
Figure 6-34 shows the solenoid valve with satellite outlet piping for 9 X 40, 9850, and 9 X 53
models.
Figure 6-34: Solenoid Valves with Satellite Outlet Piping
Troubleshooting
Problem Recommended Solution
No flow or slow or fast flow Check the valve power and then hydraulic parts (diaphragm, spring,
core, and so on)
Pulsing flow Check the hydraulic part of the valve
Missed Preset Check the hydraulic part of the valve and unit firmware
Delivery is indicated but nozzle is closed Check the valve diaphragm, STP check valve, or use of softwall hose
Rebuilding or Replacing
Labor cost for your area may determine your service philosophy. High labor costs favor
replacement. Difficult removal from unit favors partial rebuild in the unit. Gasboy
recommends the following services for average or lower than average labor costs:
For Valves Recommended Service
Less than two years old Use a repair kit (replace spring, diaphragm, and O-rings)
More than two years old or high usage Replace the valve
Service Steps
Read and follow all safety precautions as outlined in “Read This First” on

page 1-1 and at the start of this section.
To service solenoid valves, proceed as follows:
1 Power up and check power to the valve.
2 Shut off power to the unit. Check the disconnected valve coils for continuity.
• Resistance across coils is 200-500 Ohms (approximately) for most single-stage valves.
• Two-stage valves have two coils with two different resistances, 200 and 500 Ohms
(approximately).
• Resistance across the coils on an E85 unit is 39-47 Ohms (approximately).
3 Replace the valves and/or coils if readings are out of tolerance.