12
VP1000-220-IC Vane & Rotor Service & Replacement Guide
Caution
Disconnect power before beginning service.
1. The work area
must
be clean and have sufficient lighting.
2. Disconnect the vapor piping connected to the
IN
and
OUT
ports of the VP1000-220-IC cover assembly.
3. Remove the four Allen head screws and lock washers that secure the pump cover assembly to the pump housing and
remove the cover carefully.
Caution
Use a spill cloth when removing the cover, as there may be some gasoline inside the pump cavity
.
4. Carefully turn the rotor assembly by hand until the shaft key notch
is at the 12 o’clock position. (See Figure 13)
5. Remove the rotor, vanes and shaft key from the pump housing.
Note:
Place your hand or a container under the rotor while removing.
Do not use any sharp objects that would scratch the surfaces of
the pump cavity, pump shaft, rotor, or vanes.
6. Rotate the shaft by hand. If the shaft does not rotate freely, the
entire vacuum pump needs replacement (p/n VP1000-220-IC).
7. If the rotor and vanes are cracked, chipped, excessively worn or
excessively dirty, the rotor and vanes should be replaced because
cleaning will not remedy these conditions (p/n 405266901).
8. If there is no visible damage, use a lint-free cloth with isopropyl
alcohol to clean the rotor and vanes.
9. Using a lint-free cloth with isopropyl alcohol, thoroughly clean: the
inside of the pump ring and rear of the pump cavity, the rotor shaft,
and the inside of the pump cover.
10. Reposition the shaft (if necessary) so that the shaft key notch is
in the 12 o’clock position. Install the cleaned original or new shaft
key onto the shaft.
11. Carefully install the cleaned original or new rotor onto the shaft
followed by the cleaned original or new vanes into the rotor.
Note:
The rotor assembly should slide on to the shaft easily, without
excessive force. (Rotors and vanes are reversible)
Figure 13
Carbon Rotor
Vane
Notch
Shaft Key
12. Lightly lubricate and install the new O-Ring for the pump housing.
Note:
Do not allow any lubricant to get inside the pump housing.
13. Install the pump cover using the four Allen head screws and lock washers removed in step 3 and cross tighten.
Note:
Use caution when sliding the pump cover over the O-Ring seal to prevent cutting or tearing.
14. Re-connect the vapor piping to the
IN
and
OUT
ports of the pump cover assembly that was removed in Step 2.
15. Re-apply power. Test for normal operation. (Refer to Start-Up / New Installation / Warranty / Annual Testing Form).
