Wood’s Powr-Grip FL4HV11AC - Manual (Page 22)

Rev 15.0/1-14 20 FL4HV11AC: #35030
V
ACUUM
P
UMP
M
AINTENANCE
− G
AST
DAA-V505-GB/D
WARNING: Before proceeding with any maintenance, disconnect power source.
If the vacuum pump takes too long to attain full vacuum, it may require maintenance. Replace
worn parts as necessary to obtain acceptable pump performance (see REPLACEMENT PARTS
LIST). Perform the following procedures on both heads of the pump.
Replacing a Diaphragm
1) Loosen screws as necessary to remove the head (1) and the valve plate (6). 14
2) Loosen screws as necessary to remove the diaphragm retainer plate (9).
3) Replace the diaphragm (10), installing the new one in the same orientation as the old one.
Then reverse steps 1 and 2 for reassembly.
Replacing a Head Gasket and a Set of Filter Elements
1) Loosen screws as necessary to
remove the head (1) and turn it
upside-down.
2) Replace the filter elements (3) and
the head gasket (2). Then reverse
step 1 for reassembly.
Replacing a Set of Leaf Valves
1) Loosen screws as necessary to
remove the head (1) and the valve
plate (6).
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2) Lift the head off the valve plate, and
turn the valve plate upside-down.
3) Loosen the valve screw (8) and
remove the leaf valves (5), valve
retainer (7) and valve limiter (4).
4) Replace these parts and reassemble
the valve plate assembly (6) as
shown in the illustration. Then
reverse steps 1-3 for reassembly.
1 HEAD 4 VALVE LIMITER 7 VALVE RETAINER 10 DIAPHRAGM
2 HEAD GASKET 5 LEAF VALVE 8 VALVE SCREW 11 CAPACITOR
3 FILTER ELEMENT 6 VALVE PLATE 9 RETAINER PLATE
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Whenever you remove the valve plate assembly, be careful to save any shims located between the valve plate and the pump
body and reinstall them during reassembly.