Mooney FlowMax HP Regulator Instruction Manual | 19
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FlowMax HP Bolting Torques Lb-Ft (n-m)
2”
3”
4”
6”
Actuator Cap Screws
96 (130)
165 (224)
250 (340)
380 (515)
Stem Nut
8 (11)
8 (11)
8 (11)
11 (15)
Adapter Housing Cap Screws
165 (224)
165 (224)
250 (340)
380 (515)
Plug Nut
18 (25)
18 (25)
18 (25)
22 (30)
Seal Pack Bolts
8 (11)
8 (11)
8 (11)
14 (19)
Table 5
Troubleshooting
Problem
Solution
The regulator will not shut-off
1. Verify the gap between the actuator and body is equal
around its diameter
2. Check actuator to body bolts - tighten if necessary
3. Check the pilot for excess friction (“sticking open”)
4. Check main spring
5. Check the plug seal for damage
6. Check the seat for any nicks or damage to the sealing surface
7. Check for damage to the seat O-ring
8. Check for obstructions in the internal plug holes
Regulator will not open
1. Check if any valves in the sense line are not fully open
2. Check the pilot set point
3. Check that existing piping matches the piping schematics
4. Check for binding
5. Check the main diaphragm for damage
Erratic Behavior
1. Check the location of the sense line (away from pipes, fittings, and
other turbulent locations)
2. Check that the size of the sense line is adequate
3. Check if any valves in the sense line are not fully open
4. Check the pilot for excess friction (“sticking”)
5. Check for excess friction in the actuator
