Medivance Arctic Sun 2000, Service Manual

Page: 75 / 85

71
7.17 Heater
Tools and Supplies Required:
ƒ
Blade screwdriver
ƒ 5/32” hex key
1. Drain the control unit per Section 7.1.
2. Remove front grill per Section 7.2.
3. Remove rear panel per Section 7.3.
4. Remove the side panels per Section 7.4
.
5. Disconnect the cable that comes from the heater and goes to the
cable connection directly behind the circulating pump.
6. Disconnect the flowmeter cable that comes from the heater
assembly and plugs into the Input / Output circuit card (see
Section 7.10).
Note:
Observe the routing of the cable to the Input/Output circuit
card.
7. Disconnect the tubing from the upper drain port: Push the
insulation back where the tubing meets the elbow fitting. Open
the snap ring with a small screwdriver and pull the tubing from
the fitting.
8. Disconnect the tube from the bottom of the mixing reservoir. The
tube is located closest to the bottom of the outside of the
chassis: Pull back the insulation where the tube meets the
reservoir. Open the snap ring with a small screwdriver and pull
the tube off the reservoir.
9. Reach through the right side of the chassis and slide the lever up
to unlock the fitting from the flow pump.
10. Remove the fitting.
11. Unscrew the bracket screws on the left side of the control unit
chassis with a 5/32” hex key and remove the heater assembly
and the bracket through the opening.
12. After re-assembly of the unit, it is recommended to perform a
Dielectric Withstand (Hipot) Chassis Test per Section 7.23.
Snap Ring Removal
Figure 7.24
7.18 Chiller Power Relay
Tools and Supplies Required:
ƒ 5/16” nut driver
1. Remove the rear panel per Section 7.3.
2. Note the position of each wire and remove all connections from
the relay.
3. Remove the nut on the top and on the bottom of the relay with a
5/16” nut driver.
4. Remove the relay.
5. Reverse the process to replace the relay with a new one.
6. After re-assembly of the unit, it is recommended to perform a
Dielectric Withstand (Hipot) Chassis Test per Section 7.23.