106
Maintenance
3.
Tighten the lock nut.
If you need assistance in performing any of the following service steps, please contact
the factory.
9.3 Refrigerator compressor and refrigerant
WARNING
Potential for electrical shock, pressure and burn hazards. There are no user
serviceable activities associated with the refrigerator compressor or refrigerant.
The following information is provided for service reference purposes only:
Refrigerant: R134A (6 ounces)
High side pressure: 186 PSIG (1.28 MPa)
Low side pressure: 88 PSIG (.61 MPa)
9.4 Pump tubing maintenance
CAUTION
Always disconnect power to the sampler before removing the pump cover.
Replacement pump tubing is available from the manufacturer in 15 ft bulk length
(4600-15), and 50 ft bulk length (4600-50). Use of tubing other than that supplied by the
manufacturer may cause excessive wear on mechanical parts and/or poor pump
performance.
9.4.1 Tubing Life Estimates
Pump tubing life depends on several factors:
•
Distance from sample source. Locate the sampler as close to the sample source as
possible.
•
Vertical lift. Minimize the vertical lift (ideally, 15 feet or less).
•
Intake Rinses. Minimize the number of intake rinses prior to
sample collection.
Figure 34 All weather refrigerated sampler door latch
1
Lock nut
2
Door tension adjustment screw
Goodnal STP ST041 Pre Treatment (Sigma 900 MAX All Weather Refrigerated Sampler) Vendor Manual
Q-Pulse Id VM373
Active 29/10/2013
Page 106 of 122
