Saphire Scientific 370 SS, Service And Operation Manual

Page: 34 / 81

SECTION 4
29
SAPPHIRE SCIENTIFIC MODEL 370 SS ®
PART# 49-038 REV F
Vacuum Pump:
Belt Replacement Procedures for Model 370:
1) Disconnect the negative battery cable
2) Remove hose from waste tank to
vacuum pump
3) Remove hoods
4) Remove top panel (6 screws)
5) Remove left and right hand belt guards
6) Loosen all 4 blower mounting nuts
7) Loosen clamps on silencer hose
8) Slide the blower back (away from
engine)
9) Lower front 2 nuts located under the
front of blower mounting plate
approximately ½”
10) Tip the back of blower up
11) Remove all belts. Install new belts
12) Reverse procedures to install new belts
13) After belts have been installed, check for
proper tension and alignment. Do this
using a belt gauge. Set deflection to
1/8”; 10-12 lbs tension
14) Check pulleys for alignment using a
straight edge (example: ½” key stock).
Make sure pulley flange touches on 2
places on each pulley (4 total places)
15) Estimated time, 2 hours
VACUUM INLET FILTER
1. The vacuum inlet filter in the waste tank
should be inspected and cleaned
daily.
!
When removing the vacuum inlet filter, grip the
plastic hexagon section of the filter. Grasping
filter by the screen will damage or destroy the
filter. Applying a grease to the threads will
allow easier removal of filter when cleaning or
replacement is required.
DRIVE BELTS, PULLEYS and
HUBS
Check pulley set screws and hub screws after
the first 25 hours of operation and again at 100
hours.
Re-torque these screws with a torque
wrench. Follow the torque values on the
following table. Check pulley set screws and
hub screws every 500 hours thereafter.
Insure belts are properly tensioned after
checking the torque values.
!
Ensure that when you re-torque the screws,
you use a clockwise pattern and continue
until the proper torque is achieved.
TORQUE VALUES
Component Inch/lbs Foot/lbs
Engine Hub #38-052 180 15
Vacuum Pump Hub #38-056 180 15
Engine Hub #38-021 180 15