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"Oil-Less” Scroll Medical Air Medical Systems

6.0 Inspection/Replacement Procedures

6.1 V-Belts

Narrow type V-belts are used for this unit. Refer to Table 6-1a & 6-1b for the correct size.

6.1.1 Tension Check

Table 6-1a Belt size and Tension (for new belts)
Hp Motor Sheave Diameter Belt Size TENSIONING No. of
(see note 1) (see note 2) (see note 1) (see note 2) Defl. (in.) Force (lbs.) Belts
2 4.17 3.15 SPZ925 3V X 375 0.25 5 1
3 2.95 4.50 SPZ875 3V X 400 0.25 6 1
Notes:
1. Supplied on units with serial number 262296 and greater.
2. Units with serial numbers prior to 262296.

Table 6-1b Belt size and Tension (for new belts)
Hp Motor Sheave Diameter Belt Size TENSIONING No. of
(see note 1) (see note 2) (see note 1) (see note 2) Defl. (in.) Force (lbs.) Belts
5 3.35 3.65 SPZ 987 3V X 450 0.25 5 2
7 ½ 5.00 3V X 475 0.25 6 2
10 3.35 3.65 SPZ 1060 3V X 450 0.25 5 4
15 5.00 3V X 475 0.25 6 4
Notes:
1. Supplied on units with serial number 188378 and greater.
2. Units with serial numbers prior to 188378.

WARNING:
BEFORE STARTING ANY MAINTENANCE PROCEDURES, DISCONNECT ALL POWER
TO THE PACKAGE.

Release all pressure from the package before removing, loosening, or servicing any covers, guards, fittings,
connections, or other devices.

Never perform any maintenance functions while the unit is in operation.

Check the belt tension monthly. Disconnect the main power and remove the beltguard. As
shown in the illustration at right, deflect each V-belt at the center of the drive span with a
spring balance or tension meter at the tension force of Table 6-1. Then check that the average
deflections at the proper tension force are approximately the same values as shown in Table 6-
1.

6-1