SECTION 4
32
SAPPHIRE SCIENTIFIC MODEL 370 SS
®
PART#
49-038 REV F
8. GENERAL SERVICE
ADJUSTMENTS
!
DO NOT
attempt to service this unit while it is
running. High speed parts as well as high
temperature components may result in severe
injury, severed limbs, or fatality.
ENGINE SPEED
1. To adjust the engine RPM, refer to the Kohler
Engine Operation and Service Manual for
specific instructions.
!
DO NOT attempt to adjust without a tachometer
and NEVER adjust the engine above 3000
RPM.
VACUUM RELIEF VALVE
With the unit running at full RPM, block off the
airflow at the vacuum inlet port and read the
vacuum gauge. If adjustment is required, shut
the unit down and adjust the locking nut tension
on the vacuum relief valve. Re-start the unit and
read the vacuum gauge. Repeat this process
until the vacuum relief valve opens at 14” Hg.
Always ensure the lock nut is retightened.
WATER PUMP DRIVE BELT
To tighten the water pump belt:
1. Loosen the four nuts, which hold the water
pump base to the frame.
2. Adjust the position of the belt tensioning
adjusting bolt until the proper belt tension is
achieved. (3/4” deflection in the center of the
belts, half way between the pulleys).
Do not over tighten damage to pump may
occur.
3. While checking the alignment, tighten the
nuts that hold the water pump to the base.
Over tightening of belts may cause damage to
pump casing, causing it to fail.
SOLUTION OUTLET CHECK
VALVE
Inspect the check valve whenever performing
service on the chemical pump or if flow
problems are occurring in the chemical system.
1. Remove the check valve, ensuring that the
small o-ring on the seat comes out with it
2. Next, remove the seat using a 5/16 in. Allen
wrench
3. Check the Teflon seat for wear or debris.
Clean and replace the seat if necessary.
4. Inspect the poppet and the spring for wear or
damage. Clean and replace as necessary.
5.
Re-assemble the check valve. Thread the seat
by hand until snug. Then tighten with a 5/16
in Allen wrench.
DO NOT
over-tighten.
23-063 VLV, CHECK, CHECK VLV MANIFOLD
Item # Part Number Qty.
Description
1
66-282
1
CAP, CHECK VALVE
ASSY. SS
2
41-007
1
ORING, 7/8 ID X 1-
1/16 OD
3
15-007
1
SPRING, CHECK
VALVE ASSY.
4
27-010
1
POPPET, CHECK
VALVE ASSY
5
27-004
1
INSERT, SEAT-CHK
VLV ASSY TM
6
27-011
1
SEAT, CHECK
VALVE ASSY.
7
41-008
1
ORING, ½ ID 5/8 OD
7
6
5
4
3
2
1
Summary of Contents for 370 SS
Page 1: ...Service and Operation Manual 2604 Liberator Prescott AZ 86301 1 928 445 3030 ...
Page 5: ......
Page 51: ...SECTION 5 46 SAPPHIRE SCIENTIFIC MODEL 370 SS PART 49 038 REV F 69 589 ASSY FRAME ENCLOSURES ...
Page 70: ...SECTION 5 65 SAPPHIRE SCIENTIFIC MODEL 370 SS PART 49 038 REV F ELECTRICAL DIAGRAM WATER PUMP ...
Page 71: ...SECTION 5 66 SAPPHIRE SCIENTIFIC MODEL 370 SS PART 49 038 REV F ...
