Rev 11.3/1-17
33
MRTALPR4-DC: #35057
V
ACUUM
P
UMP
M
AINTENANCE
−
D
YNAFLO
DV1034204
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
the diaphragms, gaskets/flap valves or (when preferable) the entire head assemblies
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(see
REPLACEMENT PARTS LIST), as necessary to obtain acceptable pump performance. Perform
the following maintenance on both heads of the pump.
CAUTION: Do not over-tighten the head screws, because this may damage the
threads in the pump body.
Replacing a Diaphragm
1) Remove the four head screws (1) and lock washers (2), and remove the head assembly
(3―7).
2) Remove the diaphragm retaining screw (8), diaphragm (9) and rubber O-ring (10).
Note: Be sure to save the flat washer located between the O-ring and the connecting rod
(11). Also take note of the diaphragm orientation for reassembly.
3) Replace the diaphragm, rubber O-ring and diaphragm retaining screw. Reinstall the flat
washer in its original position.
4) Reverse the steps above for reassembly, as shown in the illustration.
Replacing a Gasket/Flap Valves
1) Remove the four head screws (1) and lock
washers (2), and remove the head assembly
(3―7).
2) Invert the head and remove the two valve
plate screws (7). Remove the valve plate (6)
to access the gasket/flap valves.
3) Replace the gasket/flap valves (5) and
reverse the steps above for reassembly, as
shown in the illustration. Use the alignment
pin (15) to ensure proper fit between the
head and valve plate.
Replacing a Head Assembly
1) Remove the four head screws (1), lock
washers (2) and head assembly (3―7).
2) Replace the head assembly, and reverse the
steps above for reassembly, as shown in the illustration.
1 HEAD SCREW
5 GASKET/FLAP VALVES
9 DIAPHRAGM
13 WIRES
2 LOCK WASHER
6 VALVE PLATE
10 RUBBER O-RING
14 MOTOR
3 HEAD
7 VALVE PLATE SCREW
11 CONNECTING ROD
15 ALIGNMENT PIN
4 INTAKE PORT (VACUUM) 8 DIAPHRAGM RETAINING SCREW 12 MOUNTING FOOT
16 EXHAUST PORT (PRESSURE)
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CAUTION:
Depending on the product, the head assembly (3―7) may be rotated to an orientation different from the one
shown. When removing the head assembly, always take note of its orientation and install it the same way during reassembly.
Содержание MRTALPR4FS10TDC
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