Wood’s Powr-Grip MRPT1211LAC - Manual (Page 22)

Rev 0.0/9-12 20 MRPT1211LAC: #35063
V
ACUUM
P
UMP
M
AINTENANCE
(for Gast Model 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 assembly (16). 13
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 assembly (16).
13
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 (16) 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
3 FILTER ELEMENT 6 VALVE PLATE 9 RETAINER PLATE 16 VALVE PLATE ASSEMBLY
13
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.